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PPDW series
WINCOO
The PPDW series combined type automatic pipe welding machine from WINCOO ENGINEERING CO.,LTD is engineered for the heavy end of the pipe spool fabrication line: large-diameter, thick-wall pipe from 24 to 48 inches. By combining a heavy-duty six-jaw lifting chuck with a split press-roller drive unit and a mobile cantilever welding machine, it handles the heaviest spools — up to 12 m long — with the precision of a machine tool and the throughput of a production line.
Large-diameter pipe presents a dual challenge: the workpiece is too heavy and rigid for a single drive, yet demands machine-tool-level rotation control for quality circumferential welds. The PPDW series solves this with a hybrid drive architecture:
Heavy-duty chuck drive grips and rotates the pipe end with 100,500 N·m output torque — enough to spin a fully assembled 48" spool smoothly at stepless-controlled speed;
Split press-roller drive supports and rotates the opposite end on four polyurethane-coated rollers, sharing the load and torque so long heavy spools rotate without sag or twist.
The mobile cantilever welding machine travels on a 14 m track, and the torch system carries TIG, MIG/MAG and SAW guns simultaneously — process switching without manual gun changes.
Parameter | Specification |
|---|---|
Pipe diameter | DN600–1200 (24"–48") |
Wall thickness | 5–60 mm |
Materials | Carbon steel, alloy steel, stainless steel, low-temperature steel |
Groove types | V, U, double V and composite grooves |
Workpiece length | ≤12 m (per cantilever track) |
Welding processes | TIG / Hot-wire TIG, GMAW, SAW (Lincoln Flextec 650) |
Chuck type | Six-jaw heavy-duty clamping; VFD motor + turbo-worm reducer + precision slewing bearing |
Chuck center height | 1282–1907 mm (electric lifting) |
Chuck output torque | 100,500 N·m |
Split roller drive | 4 sets polyurethane drive rollers + 4 pinch rollers; pressure arm 0–360° rotation |
Roller drive speed | 0–1000 mm/min, VFD stepless |
Column compression force | 5120 N; rotation torque 2 × 13,281 N·m |
Cantilever travel | 1500 mm forward/backward; column 0–360° manual rotation |
Torch system | Fully enclosed oscillator with TIG/MAG/SAW guns pre-installed — no manual gun change |
Support trolleys | Heavy-duty 5T capacity each, polyurethane Φ250×70 rollers, quick-fix positioning |
X/Y electric trim | 150 mm stroke, motor + ball screw + imported linear guide |
CNC oscillator | 0.5 mm unit, 100 mm stroke, 0–50 mm amplitude, 20–60 cycles/min, 0–3 s dwell |
WSP parameter storage | 50 process recipes |
Total power | ~40 kW (incl. welding sources) |
Power supply | Three-phase five-wire 380V±10% / 50Hz±1Hz |
Weld quality | RT/UT qualified; residual height ≤1.5 mm; no cracks or lack of fusion |
Hybrid Chuck + Roller Drive for Heavy Spools The six-jaw chuck (100,500 N·m) and split press-roller unit share the drive load across the full spool length. Even 12 m, 48" spools rotate on a stable axis — no end sag, no torsional twist — which is the foundation of defect-free girth welds.
Six-Jaw Clamping with Electric Height Adjustment The chuck lifts electrically over a 1282–1907 mm center-height range, aligning any pipe diameter with the torch axis. Heavy spools load and unload in minutes.
Triple-Process Torch System TIG, MIG/MAG and SAW guns are pre-mounted on the enclosed oscillator. Switch root-pass TIG, fill-pass GMAW and cap-pass SAW in seconds — no torch swapping, no re-teaching, continuous multi-layer welding.
14 m Cantilever Track The mobile welding machine travels the full track length, welding multiple joints of a long spool in one clamping session — pipe + pipe, pipe + flange, pipe + reducer, pipe + tee and pipe + elbow.
WSP Pipe Welding Expert Control System PLC + HMI integrates all process parameters with 50 stored recipes. The operator selects a recipe and the system sequences rotation speed, welding current, oscillation and wire feed automatically. Operators train in 3–5 days regardless of prior experience.
Heavy-Duty Support & Positioning Three 5T heavy-load trolleys with polyurethane rollers and quick-fix clamps position the spool body; rail system sized for 12 m spools keeps the whole assembly level and rigid.
CE / ASME / HSE Compliant Electrical system certified to CE with H/IP23 insulation, safety limits on all functions, emergency stop, grounding and anti-carbon-pollution protection on every pipe-contact surface.
Large-diameter oil & gas and refinery pipe spool prefabrication
Power plant main steam, feedwater and BOP heavy-wall piping
Offshore and module pipe fabrication (large bore risers, headers)
LNG terminal and cryogenic heavy-wall lines
Boiler and HRSG pressure piping workshops
The PPDW series is the heavy-capacity anchor station of a complete WINCOO pipe prefabrication line, receiving spools from the multi-function fitting-up center and passing RT-qualified joints to QC and delivery.
Handles what other machines cannot — 48" × 60 mm wall spools with machine-tool rotation control
Hybrid drive reliability — torque shared between chuck and rollers, less wear, longer service life
3 processes, zero gun changes — TIG root, GMAW fill, SAW cap in one automatic cycle
Turnkey integration with WINCOO cutting, fitting-up and conveying stations
International track record — delivered to fabricators in the Middle East and Southeast Asia with full installation, training and commissioning support
Contact WINCOO ENGINEERING CO.,LTD for the large-diameter welding solution in your pipe spool fabrication line.
