GB/T 9129-2003
AbolishedSpecifications of non-metallic flat gaskets for pipe flanges
管法兰用非金属平垫片 技术条件
📚 References & Relations / 引用与关联
normative_reference
GB/T 12385-1990
normative_reference
GB/T 12621-1990
normative_reference
GB/T 12622-1990
normative_reference
GB/T 540
normative_reference
GB/T 541
normative_reference
GB/T 542
normative_reference
GB/T 9126