Q355 Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

Q235 Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

Q195 Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

SS400 Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

A36 Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

S355J2H Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

S355JR Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

S275J0H Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.

Gr.C Spiral steel pipe is made of strip steel coil as raw material, regular temperature extrusion molding, automatic double wire double-sided submerged arc welding process welded spiral seam steel pipe. Spiral steel pipe will be fed into the welded pipe unit, through the multi-channel roll rolling, the strip steel is gradually rolled up to form a round billet with an open gap, adjust the amount of extrusion rollers under pressure, so that the weld gap is controlled at 1~3mm, and make the weld ends flush.