Product Description
- Standard number
- Name of standard type
- API spec 5L line pipe and steel pipe standard
- Spiral seam double surface
- Submerged arc steel pipe
- GB/T 9711.1-1997
- Delivery of petroleum and natural
- Gas industrial transportation steel pipe
- Part grade-A steel pipe
- Spiral seam double surface
- Submerged arc steel pipe
- GB/T 9711.2-1999
- Delivery of petroleum and natural
- Gas industrial transportation steel pipe technical conditions
- PartⅠgrade-B steel pipe
- Spiral seam double surface
- Submerged arc steel pipe
- SY/T5037-2000
- Spiral submerged arc welding
- Steel pipe for low-pressure fluid delivery pipe
- Spiral seam double surface
- Submerged arc steel pipe
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