Ningbo Zhehua Heavy Steel Pipe Manufacturing Co., Ltd.

Zhejiang, China

The international advanced jcoe production line for large-diameter, double-side, submerged-arc welded steel pipes(hereinafter referred to as jcoe production line)is equipped with ysd forming machine, which is of high forming precision and fast forming speed, evenly distributed stress and small residual stress;major equipment for pre-bending, etc is supplied by tian shui metal forming machine tool co., ltd.; the pre-welding is of large-power co2 gas shieldexd welding and high-speed full-length pre-welding techniques;the internal and external welding equipment is lincoln multiple wire dc/ac automatic submerged-arc welding machine, affiliated by automatic steel plate cutting torch, steel pipe straightener, steel pipe finishing machine, on-line manual ut examination for steel plate, etc. All these are warranties of advanced quality level in the steel pipe manufacturing process. We have three lincoln production line for spiral seam, double-side, submerged-arc welded steel pipe and two ref production line for roll-bending production range:jcoe: od: 406-1422 mmt:14-48 mml: 8-12 mspiral: od: 219-3420 mmt :6-25 mmmain material :q235, q345, x65.

The international advanced jcoe production line for large-diameter, double-side, submerged-arc welded steel pipes(hereinafter referred to as jcoe production line)is equipped with ysd forming machine, which is of high forming precision and fast forming speed, evenly distributed stress and small residual stress;major equipment for pre-bending, etc is supplied by tian shui metal forming machine tool co., ltd.; the pre-welding is of large-power co2 gas shieldexd welding and high-speed full-length pre-welding techniques;the internal and external welding equipment is lincoln multiple wire dc/ac automatic submerged-arc welding machine, affiliated by automatic steel plate cutting torch, steel pipe straightener, steel pipe finishing machine, on-line manual ut examination for steel plate, etc. All these are warranties of advanced quality level in the steel pipe manufacturing process. we have three lincoln production line for spiral seam, double-side, submerged-arc welded steel pipe and two ref production line for roll-bending production range:jcoe: od: 406-1422 mmt:14-48 mml: 8-12 mspiral: od: 219-3420 mmt :6-25 mmmain material :q235, q345, x65.

The international advanced jcoe production line for large-diameter, double-side, submerged-arc welded steel pipes(hereinafter referred to as jcoe production line)is equipped with ysd forming machine, which is of high forming precision and fast forming speed, evenly distributed stress and small residual stress;major equipment for pre-bending, etc is supplied by tian shui metal forming machine tool co., ltd.; the pre-welding is of large-power co2 gas shieldexd welding and high-speed full-length pre-welding techniques;the internal and external welding equipment is lincoln multiple wire dc/ac automatic submerged-arc welding machine, affiliated by automatic steel plate cutting torch, steel pipe straightener, steel pipe finishing machine, on-line manual ut examination for steel plate, etc. All these are warranties of advanced quality level in the steel pipe manufacturing process. We have three lincoln production line for spiral seam, double-side, submerged-arc welded steel pipe and two ref production line for roll-bending production range: jcoe: od: 406-1422 mm t:14-48 mm l: 8-12 m spiral: od: 219-3420 mm t :6-25 mm main material :q235, q345, x65.

The international advanced jcoe production line for large-diameter, double-side, submerged-arc welded steel pipes(hereinafter referred to as jcoe production line)is equipped with ysd forming machine, which is of high forming precision and fast forming speed, evenly distributed stress and small residual stress;major equipment for pre-bending, etc is supplied by tian shui metal forming machine tool co., ltd.; the pre-welding is of large-power co2 gas shieldexd welding and high-speed full-length pre-welding techniques;the internal and external welding equipment is lincoln multiple wire dc/ac automatic submerged-arc welding machine, affiliated by automatic steel plate cutting torch, steel pipe straightener, steel pipe finishing machine, on-line manual ut examination for steel plate, etc. All these are warranties of advanced quality level in the steel pipe manufacturing process. We have three lincoln production line for spiral seam, double-side, submerged-arc welded steel pipe and two ref production line for roll-bending production range:jcoe: od: 406-1422 mmt:14-48 mml: 8-12 mspiral: od: 219-3420 mmt :6-25 mmmain material :q235, q345, x65.