This standard specifies the classification, code, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of carbon steel and carbon-manganese steel seamless steel pipes for ships. This standard is applicable to the manufacture of Class II pressure-resistant piping systems for ships, carbon steel and carbon-manganese steel seamless steel pipes for boilers and superheaters.
GB/T 5312-1999 history
2009GB/T 5312-2009 Carbon and carbon-manganese steel seamless steel tubes and pipes for ship
1999GB/T 5312-1999 Carbon and carbon--Manganese steel seamless steel tubes and pipes for ship