Api 5l X60 Lsaw Grooved Ends Welded Carbon Steel Pipe

Api 5l X60 Lsaw Grooved Ends Welded Carbon Steel Pipe

Hebei Chengyuan Pipe Industry Group Co., Ltd.

Production process:

1. Plate detection: After the steel plateused tomanufacture large diameter submergedarc welded straight seam stee pipeenters theproduction line,the whole plateis firstinspected by ultrasonic wave,

2. Milling edge: The two edges of thesteei plate aremilledby a milling machine to achi-leve the desired width, edge parallelismand groove shape.

3. preflanging: pre bendingmachine is used to prebendthe edgeof the plate, sothattheedges of the board meet the requiredcurvature,

4. Forming: On the JCO forming machine, half ofthepre-bentsteel plate is stamped several. times to formaJ"shape,thentheotherhalfof thesteel plate is equally bent toform a "C" shape, and then anocen"O"shapeis formed.

5. Pre-weld: weld the formedstralgttseamsteelpipe and use MAG for continuous wel-ding

6. internal welding: longitudinalmultiwire submerged arc welding (more than four wire)is used to weld the inner side of the straight steel pipe.

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Product Categories : Straight Seam Steel Pipe