This standard specifies the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of seamless steel pipes for high-pressure fertilizer equipment. This standard applies to high-quality carbon steel, low alloy steel and alloy steel seamless steel pipes for high-pressure fertilizer equipment and pipelines. Also used in other chemical equipment and other purposes.
GB 6479-2000 history
2013GB 6479-2013 Seamless steel tubes for high-pressure chemical fertilizer equipments
2000GB 6479-2000 Seamless steel tubes for high-pressure for chemical fertilizer equipments