API 5L Spiral Steel Pipe
The spiral steel pipe is manufactured using hot rolled steel strip which is spiraled at room temperature to be welded .Automatic submerged arc welding is the most commonly used method in the spiral tube production,and the end products come with welding seam inside and outside.
PROCESS FLOW DIAGRAM
1 Raw material inspection
2 Uncoiling
3Rough Leveling
4End Cutting and Butt Welding
5 cage -type
6 roll forming inside welding
7 Continuous ultrsonic
8 X-ray film inspection
9 Hydrostatic Testing
10 auto length-Measuring and Welghing
11 coating and marking
12 storage
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