工业用金属球阀|沙特标准|SASO-GSO ISO 17292
Metal Ball Valves For Petroleum,Petrochemical And Allied Industries
石油、石化及相关工业用金属球阀
Technical Regulation for Pressure Equipment
工业用金属球阀|沙特标准|SASO-GSO ISO 17292
Metal Ball Valves For Petroleum,Petrochemical And Allied Industries
石油、石化及相关工业用金属球阀
Technical Regulation for Pressure Equipment
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