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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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