供气管和配件用连接环|沙特标准|SASO-ISO-6447
SASO-ISO-6447
Rubber seals – Joint rings used for gas supply pipes and fittings – Specification for material
橡胶密封件.供气管和配件用连接环.材料规范
供气管和配件用连接环|沙特标准|SASO-ISO-6447
SASO-ISO-6447
Rubber seals – Joint rings used for gas supply pipes and fittings – Specification for material
橡胶密封件.供气管和配件用连接环.材料规范