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Seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines. GB 5310- 2008 is a national standard specifies classification, code name, dimension, shape, weight, technical requirements, specimen, test methods, test rules, packaging, mark and quality certificate. GB 5310- 2008 standard is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines.

Seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes
used as pipelines.
GB 5310- 2008 is a national standard specifies classification, code name, dimension, shape,
weight, technical requirements, specimen, test methods, test rules, packaging, mark and quality
certificate. GB 5310- 2008 standard is applicable to seamless tubes for making steam boiler whose
pressure is high or higher and seamless tubes used as pipelines.