Big Spiral Steel Pipe

• After-sales Service: 3months
• Warranty: 1year
• Type: Welded
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Antiseptical
• Model NO.: 219-2220mm
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose, Steel Pipe a,B,Grade250,Grade350
• Section Shape: Round
• Surface: Black
• Tolerance: +-1-5%
• W.T: 0.8 - 30 mm
• Standard: API, ASTM, BS, DIN, GB
• End of Pipe: 0.8 - 30 mm
• Length: 2-12m
• Alloy or Not: Non-Alloy
• Certification: ISO, Bsi
• Thickness: 0.8 - 30 mm
• Outer Diameter: 219 - 2220 mm
• Transport Package: Export Packing
• Specification: 219mm-2220mm
• Trademark: Ruitong
• Origin: China
• HS Code: 73063090
• Production Capacity: 300000

Product Description

Spiral steel pipe is a kind of spiral seam steel pipe, which is made of strip coil as raw material and is often extruded and welded by automatic double wire submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multi-rollers, the strip is gradually rolled up to form a circular billet with opening clearance. The reduction of the extrusion roll is adjusted so that the weld clearance is controlled at 1-3 mm and the weld ends are even.