Quality Assurance

Manufacturing Process

Seamless pipes & tubes (Mannesmann process)

Seamless pipes & tubes (Mannesmann process).png


Seamless pipe pipes & tubes (hot extrusion ・ hot hollow forged)

Seamless pipe pipes & tubes (hot extrusion ・ hot hollow forged).png


Electric resistance-welded pipes & tubes

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Hot electric resistance-welded pipes & tubes

Hot electric resistance-welded pipes & tubes.png


Arc-welded pipes & tubes (SAWL pipe (by UOE process), SAWL pipe (by Bending roll process), SAWH pipe (by Spiral process))

Arc-welded pipes & tubes (SAWL pipe (by UOE process), SAWL pipe (by Bending roll process), SAWH pipe (by Spiral process)).png



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