Tank hydraulic jacking system- China Manufacturers Suppliers Factory

YT series hydraulic tank jacks is a set of large-scale equipment specially developed by our company for the national crude oil reserve project, which is suitable for the inversion welding engineering of giant steel cylinder tank.

This type of equipment is single-acting two-stage hydraulic cylinder (hydraulic jack), used for vertical take-off and landing work, return need external force or self-weight back, can’t be used for horizontal work.The equipment has strict and compact structure, safe and stable, easy operation, adjustable load, quick installation and high synchronization accuracy.

●The oil box

●The hydraulic system

●The hydraulic cylinder

The oil box

The oil tank is a closed type box with hydraulic oil to provide oil source for the equipment.

1.Liquid level meter shows the oil level and liquid temperature in the box.

2.The air filter has the function of protecting and purifying the gas of hydraulic oil.

3.The lifting lug is used for equipment lifting.

The hydraulic system

Hydraulic system is the power source of the whole hydraulic lifting equipment, first with the motor todrive the piston pump, and then the mechanical energy of the pump into pressure energy, through the pressure valve (relief valve), direction valve (solenoid valve), sent to the actuator (hydraulic cylinder), and finally converted into mechanical energy to drive the load.

1.Protective cover can be disassembled, it mainly protect all parts under the protective cover .

2.Electromagnetic directional valve through the electromagnet with electricity and no electricity to complete the lifting action of the hydraulic cylinder.

3.The relief valve can control the pressure of the system to maintain constant by adjusting the handle of the relief valve, and realize the function of regulating, stabilizing or limiting the pressure.The set of equipment relief valve setting range (0-31.5mpa).　

4.Pressure gauge shows the system pressure value.

5.The high-pressure ball valve makes the hydraulic oil flow or cut-off in the system. The valve mainly plays a safety protection role in this set of equipment.. It prevents the internal leakage of the hydraulic valve from affecting the operation of the hydraulic cylinder's descending equipment. Hydraulic fluid flow or cut-off is controlled by rotating high pressure ball valve handle.

The hydraulic cylinder

1.Hydraulic cylinder is the actuator, rated output force is 250kN.

2.The hydraulic cylinder roof device is the force fulcrum of the piston rod end of the hydraulic Cylinder. In the process of lifting the tank, to prevent the damage of the hydraulic cylinder caused by the bending of the piston rod, or even failure and safety accidents.

3.Adjust the jacking bolt to adjust the gap between the hydraulic cylinder bracket and the tank wall, and tighten the bracket in the process of lifting the tank.

4.The hydraulic cylinder support regulating rod can mainly meet the requirements of resistance to class 5 wind load and tank partial load during the tank lifting process. It can also assist in adjusting the gap between hydraulic cylinder bracket and tank wall when rising circle falls back.

5.The equipment adopts PLC equalization system with automatic and manual modes.And the man-machine control interface is set on the control cabinet.The displacement sensor transmits signals to adjust the equipment at the same height

6.The working principle of the displacement sensor: because the wire rope is wound on a pulley built into the  sensor, and the other end of the sensor has been connected to the mechanical movement, which is equipped with a display, so when the wire rope is pulled, the mechanical movement can be converted into electrical signals, so as to get the required data.　

7.Unidirectional explosion-proof valve is a safety valve that allows the hydraulic cylinder to self-lock.In the process of being lifted or in the process of hanging the tank, the tank will not slide or fall because of the sudden explosion of the high-pressure hose, blurting, sudden power failure, etc.

WINCOO Engineering Co., Ltd (WINCOO) is engaged in bringing the most suitable solutions/equipment for client, fabricators, EPC/C companies on pipe fabrication,tank construction, pipeline construction ,industrial production lines, clean energy project and other industrial field.

Products are widely used in aviation, aerospace, electric power, metallurgy,nuclear power, ships, automobiles, construction machinery, lifting and transportation machinery, machine tools, plastics, chemical industry, paper making,packaging, printing, rubber, textile, printing and dyeing, cement, medicine, food, oil,mining, fire, construction, military and other fields;And for the major design institute(such as: iron and steel design institute, electric power design institute, chemical design institute, etc.) to provide quality technical support and service.

In the last six months, our company has sold a total of 197 hydraulic jacks to Malaysia, Senegal, Italy, Iraq and THE United Arab Emirates. Not only our new customers who come back because of quality, but also new customers who come to inquire through various channels.

Largest Iraq order

Malaysian customers who placed back-to-back orders

UAE, Italy and other new clients

Largest Iraq order

During the year of the Tiger 2022, our business manager received an inquiry from Iraq through Google's independent site. After friendly communication with the customer and several technical clarification meetings, the customer placed an order for 100 hydraulic jacks to us.

Malaysian customers who placed back-to-back orders

In December last year, the Malaysian customer placed an order of 20 hydraulic jacks to us after our initial contact. After one month's production cycle and more than half a month's transportation time, the customer received the hydraulic jacks and carried out on-site construction. Our hydraulic jacks has excellent quality and favorable price. In June this year, the customer placed an order of 20 hydraulic jacks to us as he expanded the scale and received a new project.

UAE, Italy and other new clients

Not only Google site, customers can also find us through Alibaba international site and Made in China website. Most new customers find us through the above websites. From online chat to video conference, we impress customers with our professional ability and superior product advantages. As a result, we have developed new customers in the UNITED Arab Emirates, Italy and other countries.

Our company has a skilled team that can customize exclusive products for you according to the different needs of customers. If you are interested in this product and want to know more about it, please contact WINCOO ENGINEERING CO., LTD.

Do you know the tank hydraulic jacking system?Understand it?Do you know how it jacked up the tank?And do you know how much weight it can lift? Although hydraulic jacking system have been widely used in the construction of large tanks, many people still know little about them. Today I will give you a good introduction to the hydraulic jacking system from the following aspects.

●What is the hydraulic jacking system?

●How does the hydraulic jacking system lift the tank?

●How much weight can the hydraulic jacking system lift?

What is the hydraulic jacking system?

Hydraulic jacking system is an important machine for tank construction. The equipment is mainly used for inverted construction of vertical cylindrical steel tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature tank.

At present, we have three types of hydraulic jacking system in WINCOO Engineering Co., LTD. They are the following three: Advanced hydraulic jacking system, Simple unfixing Holding -latch hydraulic Jacking system and Simple chain type hydraulic jacking system.

How does the hydraulic jacking system lift the tank?

Hydraulic jacking system (package unit) is evenly distributed around tank inner wall. Tank top and upper (the first layer) wall plates are lifted first and then install and weld wall plates of tank body. Self locking hydraulic jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jacking system, upper clamp fastens and lifts lifting rod and expansion ring and mobilize tank (including tank top) to ascend upward. When oil returns to jack, upper clamp returns with piston and lower clamp automatically fastens lifting rod without gliding. The jack repeats the movement and make lifting rod ascend with tank to designated height (spare height for next layer of plate). After butt weld of next layer of wall plates, open upper and lower loosening device and loosen upper and lower clamp to make lifting rod and expansion ring descend to lower expanded and welded rib plate of the next layer of wall plates and then lift. Repeat the process and ascend welded tan till the last layer of wall plates are installed and welded. The installation of the whole storage tank is completed.

How much weight can the hydraulic jacking system lift?

1.The number of hydraulic cylinders used for the same size tank is different according to the actual use and weight of the tank.

2.Regardless of tank size, hydraulic cylinder installation must be evenly distributed.

3.Construction of different tanks and selection of YT series hydraulic lifting equipment number and calculation of lifting equipment load rate specification: lifting equipment load rate must be less than 80%.

For example, for a storage tank with a volume of 50,00m3 and a diameter of 60m, the maximum weight of the lifting body of the tank is 536T (excluding the weight of the bottom plate of the tank), 40 hydraulic cylinders of YT25-2700 are selected, and the output force of each hydraulic cylinder is 250KN, so the total output force of the lifting device is 25O×40=10000KN.The load rate of the lifting equipment is 536x9.8÷10000×100%≈52.53%, which meets the requirement of less than 70%.

The above is our brief introduction to the hydraulic jacking system. If you have any questions, you are welcome to browse other relevant articles and products on our website. I hope the above content will be helpful to you.

At the production site of the tank hydraulic jacking system, due to the constraints of the production plan and technical conditions, the fault diagnosis personnel are required to accurately diagnose the faults of the hydraulic equipment, and the maintenance personnel are required to use the existing information and the technical conditions of the site. Minimize the workload of disassembly and assembly, save maintenance man-hours and costs, accurately find out the fault location and the cause of the failure and repair it, so that the tank hydraulic jacking system can resume normal operation.

 

Here is the content list:

l  General principles of tank hydraulic jacking system fault diagnosis.

l  The specific method of tank hydraulic jacking system fault diagnosis.

l  To summarize the fault diagnosis of tank hydraulic jacking system.

 

General principles of tank hydraulic jacking system fault diagnosis.

Correct analysis of tank hydraulic jacking system failures is the prerequisite for troubleshooting. Most tank hydraulic jacking system failures do not occur suddenly. There are always signs before they occur. When the signs develop to a certain extent, the failure will occur.

 

The reasons for the failure of the tank hydraulic jacking system are various and there is no fixed pattern to be found. Statistics show that about 90% of tank hydraulic jacking system failures are caused by poor management. In order to diagnose failures quickly, accurately and conveniently, it is necessary to fully understand the characteristics and laws of tank hydraulic jacking system failures, which is the basis of fault diagnosis.

 

The following principles are worth following in the fault diagnosis of tank hydraulic jacking system:

 

①　First, determine whether the working conditions and peripheral environment of the tank hydraulic jacking system are normal, and check whether the various conditions of the tank hydraulic jacking system meet the requirements of normal operation.

②　Area judgment Determine the area related to the fault based on the tank hydraulic jacking system fault phenomenon and characteristics, and gradually reduce the scope of the fault.

③　Master the types of tank hydraulic jacking system faults and conduct a comprehensive analysis. According to the final phenomenon of the fault, gradually find out a variety of direct or indirect possible causes.

④　When verifying possible causes of failure, generally start from the most likely cause of failure or the most easily inspected place, which can reduce the workload of assembly and disassembly and increase the speed of diagnosis.

⑤　Establish a fault analysis table for the equipment operation tank hydraulic jacking system, which is a high-level summary of the use experience and helps to quickly make a judgment on the fault phenomenon.

 

 

The specific method of tank hydraulic jacking system fault diagnosis.

l  The traditional method of finding hydraulic system faults daily is logical analysis and gradually approaching fault.

When the hydraulic system fails, there are many possible causes of the failure. Using the logic algebra method, list the possible failure causes, and then make logical judgments one by one according to the principle of easy first and then difficult, approach item by item, and finally find out the cause of the failure and the specific conditions that caused the failure.

 

l  Fault diagnosis system based on parameter measurement

The idea of diagnosing faults by parameter measurement method is based on the fact that when any tank hydraulic jacking system is working normally, the system parameters are working near the design and set values. If these parameters deviate from the preset value during work, the system will malfunction or may malfunction.

 

That is, the essence of the failure of the tank hydraulic jacking system is the abnormal change of the system working parameters. During the measurement, there is no need to stop the machine or damage the hydraulic system. Almost any part of the system can be tested. Not only can the existing faults be diagnosed, but also online monitoring and potential faults can be predicted.

 

 

To summarize the fault diagnosis of tank hydraulic jacking system.

Apply the traditional logical analysis stepwise approximation method. It is necessary to analyze, judge and inspect all the above possible causes one by one, and finally find out the cause of the failure and the specific component that caused the failure. The diagnosis process of this method is cumbersome and requires a lot of assembly and disassembly, verification work, low efficiency, long construction period, and can only be qualitative analysis, the diagnosis is not accurate enough.

 

Application of fault diagnosis tank hydraulic jacking system based on parameter measurement. When piping the tank hydraulic jacking system, set a double ball valve and three ports at the outlet a of the pump, the front b of the reversing valve, and the inlet c of the cylinder, and the fault diagnosis detection circuit can be used to limit the system fault within a few seconds. In a certain area, the fault is diagnosed based on the measured parameter value.

 

Through the detection, the final cause of the failure is the serious internal leakage of the vane pump. After disassembling the pump, it was discovered that the vane pump stator caused abnormal wear due to poor lubrication, which caused internal leakage to increase and the tank hydraulic jacking system pressure did not increase. It was further discovered that the water in the water cooling tank hydraulic jacking system leaked into the oil, causing the oil to emulsify and lose its lubrication effect.

The installation of pipeline construction equipment is one of the necessary steps in the industrial field, and the installation and construction of pipelines is a very important stage in project construction. Next, take an example to analyze the operating requirements of pipeline construction equipment.

 

Here is the content list:

l Introduction of welding engineering vehicles in pipeline construction equipment.

l Introduction of pipelayer in pipeline construction equipment.

l How to maintain pipeline construction equipment after construction?

 

Introduction of welding engineering vehicles in pipeline construction equipment.

Mainly introduce the operating requirements of pipe layers, welding engineering vehicles, counter pointers and directional drills that are frequently used and risky during the construction of pipeline construction equipment

 

l Main structure of welding engineering vehicle

Engine part, chassis running part, transfer case and universal joint shaft, generator, hydraulic boom crane, electrical control cabinet, lubrication system and cooling system.

 

l Operational safety requirements for welding engineering vehicles

Driving with a license, before entering the work of pipeline construction equipment, you should fully understand the special conditions of the work site, understand the various conditions that affect operation and sports, and adopt and formulate operation and protection measures that comply with safety regulations.

1. Keep a safe distance from hanging objects, walls, falling objects and unstable ground.

2. lt is necessary to understand the changes, visibility and weather conditions of the construction area of pipeline construction equipment. No smoking!

3. Contact relevant departments in time to learn more about the locations of public pipelines, underground cables, and water pipelines.

4. When the welder is working, put the throttle to the highest position and check that the various instrument indexes are normal before it can work.

5. Keep an adequate safety distance from wires and other pipeline construction equipment.

6. Avoid any work movement that can tilt or tip the welding truck; prevent the welding truck from working or moving on a slope that does not meet the requirements.

7. When pipeline construction equipment goes downhill, low speed must be used to prevent loss of control.

8. Electricity should follow the corresponding electrical regulations.

9. Welding vehicles are not allowed to work with faults. If there is no oil pressure, or the oil pressure is too low, the water temperature is too high, or there is abnormal noise, it should be stopped immediately for inspection and troubleshooting

10. The lifting weight of the hydraulic crane must comply with the requirements specified in the chart of the rated lifting weight curve of the hydraulic crane

11. It is not allowed to adjust the opening pressure of the safety valve of the hydraulic system at will

12. Driving is not allowed for 2 consecutive hours

13. Before using power generation pipeline construction equipment, observe the hydraulic crane and the surrounding environment, whether there are debris and tools on the crawler

14. When leaving the machine, the operating lever should be locked first!

 

Introduction of pipelayer in pipeline construction equipment.

l Main structure

Engine, crawler walking part, hoisting system, cab, counterweight, etc.

 

l Operational safety requirements

1. Before the pipe layer runs, the passageway must be cleared to facilitate traffic.

2. When the pipe layer hoisting heavy objects, it is strictly forbidden to pass above the equipment and personnel, and it is strictly prohibited to stand under the boom.

3. Stop immediately in case of emergency during work operation.

4. The command of the ground commander shall be serious and accurate, and shall not leave the work post without authorization.

5. When hoisting pipes while driving, pay attention to the side of the boom and the side of the counterweight to prevent the counterweight from reaching out and hitting obstacles.

6. When loading and unloading heavy objects, the speed should be even and stable, and should be handled gently when approaching the ground.

7. The center of the hook should be as close as possible to the center of the heavy object. The hoisting rope must be firm and reliable with sufficient bearing capacity, and the binding must be firm. Keep heavy objects as low as possible.

8. Heavy objects are not allowed to turn before leaving the ground. It is forbidden to pull heavy objects from the ground to pull up trees and lift objects buried in the ground (except when multiple pipe layers are laying pipes).

9. When walking with heavy objects hanging, the speed of forward and backward or turning should be stable.

 

How to maintain pipeline construction equipment after construction?

The maintenance of pipeline construction equipment ensures that its technical parameters within the specified life cycle meet the original design requirements; ensure that its safety performance meets the requirements of regulations and standards.

 

Daily maintenance work such as cleaning, inspection, lubrication, tightening and adjustment to prevent deterioration of pipeline construction equipment and maintain equipment performance; necessary inspections to determine the degree of pipeline construction equipment deterioration or performance degradation; to repair deterioration and restore pipeline Repair activities based on the performance of pipeline construction equipment. Requirements for operators of professional pipeline construction equipment: “Three Goods” and “Four Meetings” should be achieved.

 

Good management, good use, good maintenance, can operate, maintain, inspect, and simply repair Equipment maintenance: cross operation method. Cleaning, lubrication, tightening, adjustment, and anti-corrosion pipeline construction equipment maintenance: general requirements for "five fixed" fixed-point, fixed-point, fixed-time, fixed-quality, and quantitative maintenance

①　Strictly follow the procedures, cycles and methods specified in the pipeline construction equipment manual.

②　Different functional blocks have different requirements: power system, transmission system, electrical system, hydraulic system, lubrication system, etc.

What is more? WINCOO provide not only pipeline construction solutions, but also pipe spool fabrication solutions for customers from everywhere!

The working principle of the rolling machine is to make the work roll move through the action of hydraulic pressure, mechanical force and other external forces, so that the sheet is bent or rolled into shape.

What are the operating taboos of the rolling machine?

How to operate the rolling machine safely and correctly?

What are the inspection measures for rolling machine?

What are the operating taboos of the rolling machine?

1. When multiple people work together on the rolling machine, there must be a special person to command.

2. It is strictly forbidden to overload the rolling machine.

3. The tilting and resetting of the lifting and turning bearing of the upper roller and the balance of the upper roller must be carried out after the main drive is stopped.

4. It is forbidden to pile up workpieces and sundries in the workplace, and keep the machine tool and the site clean at all times.

5. After the operation of the rolling machine is completed, the power supply should be cut off and the power box should be locked.

How to operate the rolling machine safely and correctly?

The first is that the operator should organize the surrounding environment of the operation before operating the rolling machine to maintain a good operating environment. At the same time, the operator must be neatly dressed to avoid pulling the corners of clothes into the roller during the operation. In the process of work, it must be noted that the operator can only stand on both sides of the workpiece, which is the most reasonable position. If you want to adjust and measure the roundness during the operation, you must stop the operation, and it is forbidden to operate during the operation. A certain margin should be left at the end of the processing part.

What are the inspection measures for rolling machine?

1. During the running process, if the rolling machine has irregular noise, impact and other abnormal phenomena, it should be stopped immediately for inspection.

2. During the operation, all personnel should coordinate with each other, obey the command of the person in charge of the rolling plate, and it is forbidden to start the machine without a password.

3. When operating the rolling machine, pay great attention to the fact that the hand is pressed by the steel plate and rolled in together with the steel plate.

4. Be careful not to collide with the machine when lifting the steel plate or reel with a crane. After the coiling is finished, make sure that all materials are finished and the site is cleared, and the maintenance of the equipment is done well, and the power is turned off in time.

Based on clients’ facility/site space availability, WINCOO ENGINEERING CO., LTD is able to study/design and present matched configurations on project schedule, quality, cost and productivity to guarantee production pace in accordance with project requirement. They are committed to providing various rolling machines of high quality for all customers from all over the world.

Automatic welding machine refers to the machine equipment that welds the annular gap. For example, the welds between the upper and lower covers of a household air-conditioning compressor and the housing are welded by a ring welder. Automatic welding machines are divided into vertical girth welding machines and horizontal welding machines. Generally, the welding machine used for the ring welding machine is gas shielded welding with automatic wire feeding. Next, by introducing the automatic welding machine provided by WINCOO, the application environment of the tank welding machine will be described in detail.

 

Here is the content list:

l Research background of tank welding machine.

l The application prospect of tank welding machine in the future.

l What are the application environments of tank welding machine?

 

Research background of tank welding machine.

Metal pipe welding is an important part of aeroengine. Fuel, lubricating oil, air, oxygen and other working media in each system rely on metal pipes for transmission. Aviation engine pipeline parts have many types, large quantity, and high accuracy grade. Therefore, the requirements for manufacturing precision and quality are very high, and the requirements for manufacturing methods are getting higher and higher.

 

The main manufacturing method of metal conduit is tank welding machine welding. The welding of metal conduits of aero-engines mostly adopts manual argon arc welding, flame brazing, induction brazing, etc. The above-mentioned welding method is easy to operate, simple in equipment, low in cost, and low in requirement for a single welded pipe. Pipes, so it is widely used for pipe welding.

 

However, these welding methods are manual operations, which require very high skills for tank welders. Usually the weld formation is not ideal, and defects such as weld deviation, dents, weld leakage and incomplete welding will occur.

 

The application prospect of tank welding machine in the future.

In recent years, with the large-scale application of metal conduits, the welding quality requirements of metal conduits have become higher and higher, and the welding of automatic welding machines has become an ideal conduit welding method.

 

In the 1990s, there was an automatic girth welder for welding metal pipes. The diameter of the welded pipe could cover all the metal pipes on aero engines.Therefore, in recent years, automatic welding machines have been applied to the welding of metal conduits of aero-engines and have achieved success.

 

What are the application environments of tank welding machine?

In the operation of picking and exchanging electronic components, a tank welding machine welding process is required. Often in order to locate the problem of the circuit function, it is necessary to remove the components from the printed circuit board and perform the necessary measurements.

 

Generally, the reliable and successful operation of equipment related to space, defense, medical electronics, traffic control systems, communication systems, and supervision and control systems all rely on excellent tank welding machine welding.

1) Disassembly of extra components;

2) Inspection of components;

3) Exchange of defective components;

4) Check the circuit function.

 

The welding technology of the tank welding machine is an accompanying technology. With the development of the electronics industry, more useful packaging technologies and smaller components will certainly continue to appear, and tank welding machines will continue to be developed to meet the needs of the electronics industry and environmental issues. This is why for technology professors working in the electronics industry today, welding has become more and more professional!

When using the tank welding machine, the operator puts the lamp tube into the fixture, presses the start button, the two pressing cylinders descend to position the workpiece in the ultrasonic mold cavity, and then the ultrasonic welding head acts to trigger the ultrasonic wave, and the welding head carries out the workpiece. After welding and welding, the cylinder drives the upper die to reset, the pressing cylinder rises, and the operator takes out the workpiece to complete one operation.

What are the characteristics of automatic vertical welder?

What is the working principle of tank welding machine?

What is the working effect of tank welding machine?

What are the characteristics of automatic vertical welder?

Automatic vertical welder is high-efficiency automatic welding equipment that uses current feedback closed-loop control of vehicle lift. The thickness of the welded joint can be up to 50mm at one time. Mainly used for thick plate welding in petroleum, chemical, blast furnace, shipbuilding and other industries. EGW vertical gas electric welding machine is a kind of high-efficiency automatic welding equipment improved according to the current feedback closed-loop control welding trolley. The main feature of automatic vertical welder is that the thickness is from 10mm to 50mm in one pass of forced water cooling. At the same time, the molten pool level is automatically controlled, and the wire extension length is automatically adjusted. Small size and light weight welding trolley, flexible and modular, easy to update and easy to use. Widely used in petroleum, chemical, blast furnace thick plate welding and shipbuilding industries.

What is the working principle of tank welding machine?

In most cases, the EGW used in the tank welding machine uses carbon dioxide gas as a protective gas, but sometimes pure argon, argon carbon dioxide mixed gas, argon oxygen mixed gas, and argon helium mixed gas are used. Welding wire is often made of flux wire that creates slag and provides an aesthetically pleasing weld, but sometimes solid wire is used.

Tank welding machine surrounds the molten pool with the base metal end and copper lining or refractory lining material, and can perform vertical upward welding while preventing dripping of molten metal, so it can be welded in a single pass (single operation) Welding of thick plates. Its applications include welding of vertical butt joints such as ship side outer panels, bridge construction, storage tanks, pressure vessels, etc.

What is the working effect of tank welding machine?

Tank welding machine is usually used for welding thicker materials such as low carbon steel and medium carbon steel, and can also be used for welding austenitic stainless steel and other metal alloys. The thickness of the plate is 12~80mm the most suitable. If it is larger than 80mm, it is difficult to obtain a sufficient and good protective effect, resulting in pores in the weld, uneven penetration and incomplete penetration. The length of the welded joint is generally unlimited. Single-layer welding is the most commonly used welding method, but multi-layer welding can also be used.

Complete after-sales service, WINCOO ENGINEERING CO., LTD can provide online and offline technical support, not only video guidance, but also on-site guidance, want to know more about high efficiency pipeline construction equipment, horizontal pipeline construction equipment, stainless steel pressure vessel, etc.

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