Machine is made in March 2020, by a Hebei company, stopped running in April 2022

Machine is on line

Total machine weight: approximate 300 ton

Machine is used to produce low pressure liquid transmission pipeline, water supply and drainage pipeline, gas conveyor pipeline, steel pipes for engineering construction, steel pipes for industrial structures

application: water tubes

Spiral submerged arc welding finished product sizing: 8-18 metre

Wall thickness: max. 20mm

Material: Q235B

Scope of supply and technological process:

Forming method: right spiral roll up, 3 roll forming, externally controlled adjustable sizing molding

Welding method: single wire internal welding, single wire (double wires) submerged arc welding

Forming process: forward swing intermittent production, steel coil center positioning, semi -automatic butt welding

Technological process: uncoiler- coil opener- feeding- vertical roll centering - shear welder - vertical roll centering - vertical roll centering – feeding – guiding – forming - inside welding - outside welding - cut to length - run out

Input technical parameter:

Input material: hot rolled steel coil

Coil OD: 1200-2000mm

Coil ID: 508-762mm

Coil width: 1000-1500mm

Coil thickness: max. 20mm

Material: Q235B

Max. coil weight: 30 ton

Crescent curve: ＜10/10 mm/m

Welders:

Inside welder: ZD5-1600E

Outside welder: ZD5-1000B ZX5-1250

Welding method: single wire internal welding, single wire (double wires) submerged arc welding

Welding speed: 0.5- 2.6 m/min

Feeding speed: 0.5-3.0 m/min

Shear welder: plasma cutter, welder: Co2 gas shield arc welding

Output

Tube OD: 820-3000mm

Wall thickness: max. 20mm

Helix angle: 50°-85°

Tube length: 8-18 meter

Voltage: AC-380/ 220 V

Power capacity: -250KW

Scope of supply: