shape shape

3200 × 25MM SPIRAL PIPE MILL

3200 × 25MM SPIRAL PIPE MILL

Description:

3200 × 25MM SPIRAL PIPE MILL

Used Secondhand The spiral welded pipe mill is to uncoil the steel coil into steel strip which is formed by forming machine to make spiral welded pipe. Φ426—Φ3200 spiral welded pipe mill apply front swing type mill. The spiral welded pipes are mainly used as delivery pipeline for petroleum, natural gas, water, coal gas, as well as structural pipe and piling pipe.
Make Xi’an heavy machinery research institute
Year 2006
Last run 2014
Reason of stop Factory decides to replace the mill with other machines
In-line Yes
EQUIPMENT SPECIFICATION
PIPE SPECIFICATION
Pipe diameter: Φ426-Φ3200 mm
Pipe length 6000-12000 mm
Pipe weight: max. ~23T
Thread pitch: Max. 2100 mm

COIL SPECIFICATION
Steel plate thickness6.0-25.0 mm (different with grades)
Steel coil OD Φ1200-Φ1900 mm
Steel coil ID Φ500-Φ700 mm
Coil width800-1650mm
Coil weight Max 35T
Material B-X80

PRODUCTION FLOW
Forming process
Welding process Left hand spiral forming, center positioning, front swing, discontinuous production.
The inner and outer spiral welding line employs DC-AC double wire submerged-arc automatic welding, strip steel end welding employs DC double wire submerged-arc automatic welding( the welding power supply is used with outer welding together)

MILL SPECIFICATION
Delivery speed~0.5-2.7m/min
Welding speed ~0.6-2.0m/min
Forming mode 3-roll bending plate left handed scroll type
Forming angle scope 45°--80°

MILL PRODUCTION PROCESS FLOW
Lift coil →Prepare coil →uncoiling →peeler →hydraulic aligning →leveling→ hydraulic aligning→ head cutting →butt joint→ hydraulic aligning→ edge shear → hydraulic aligning→ edge milling → hydraulic aligning→ sweeping →delivery → hydraulic aligning → pre-bending→ pressing plate→ hydraulic aligning→ forming→ inner welding and outer welding→ stabilizing→ ultrasonic inspection in line →plasma cutting → Enter finishing section(pipe out)