Spiral Welded Pipe Mills

DescriptionThis series of welded tube mill machine is used to produce the low-pressure transporting pipe and structure pipes. The spiral welded pipe mill is equipped with a whole spiral welded pipe line and necessary finishing equipment.Material:hot roll or slitting cut steel coil

Specifications of the Welded Tube Mill Machine

Coil OD	Φ1500-2000mm
ID	Φ610-760mm
	900-2000mm
Thickness	6-25.4mm
Material	Normal carbon steel,low carbon steel Max yield strength is less than 48kg/mm2480Mpa-X70 API HR Q235, Q345, X42-X70(X70≤19.1,Q235≤25.4mm)
Side Curvature	≤10mm/10m
Tower	＜30mm
Max Weight	40T

Product Parameters:

Pipe Diameter	Φ400-Φ2500mm (16inch-100inch)
Thickness	6-25.4 mm Max yield strength is less than 48kg/mm2-X70 API HR Q235, Q345, X42-X70(X70≤19.1,Q235≤25.4mm
Helix angle	45°-78°
Maxpipe thread pitch	2400mm
Length	8-12m
Configuration	One set 40T crane and the other20T crane
Capacity	~1600KW(Including the beveller,testers ,welders and so on)

Parameters and Flow of ProcessParameters

Front Swiveling	Left Helix
Forming Form	Three rollers outside controlled
Positioning Form	CenterPosition
Welding Speed
Feeding Speed
Welding Mode	double sides submerged arc welding
Inside Welded Machine Outside Welded Machine	(2 nozzles) I: DC-1500 ⅡAC-1200(t≥12.7mm) (2 nozzles) I: DC-1500 II: AC-1200(t≥12.7mm)
Pressure Air

Working Process of the Spiral Welded Pipe Mill:(coil car) → (uncoil) → (aligning) → (5 roll leveling) → (aligning) → (shearing and cross welding) → (aligning) → (milling) → (aligning) → milling→ (aligning) → (steel plate cleaning) → (driving) → (pre-bending) → forming → (inside welding) → (outside welding) → (cut to length) → (output distributing) → (on-line UT testing) → (welding flux disposing) → (X-ray testing) → (end-facing) → (hydro-static testing) → (collecting&storage)

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