Welded pipe standard

GB/T9711.1 Oil and gas industry - Technical requirements for delivery of steel tubes - Part 1
GB/T9711.2 Oil and gas industry - Technical conditions for delivery of steel pipes - Part 2
GB/T9711.3 Oil and gas industry - Technical conditions for delivery of steel pipes - Part 3
GB/T3092 welded steel pipe for low pressure fluid transportation
GB/T3091 galvanized welded steel pipe for low pressure fluid transportation
GB3640 ordinary carbon steel wire casing
GB/T12770 stainless steel welded steel pipe for mechanical structure
GB/T12771 stainless steel welded steel pipe for fluid transportation
GB/T14291 mining fluid conveying welded steel pipe
YB242 straight seam electric welded steel pipe
SY5036 spiral submerged arc welded steel pipe for pressurized fluid transportation
SY5038 spiral seam high frequency welded steel pipe for pressurized fluid transportation
SY5037 general spiral submerged arc welded steel pipe for low pressure fluid transportation
SY5040 pile spiral welded steel pipe