DIN 4927-1995 Flanged steel rising pipes for raising of water - Nominal diameter 50 to 200《水位壅高用钢制法兰提升管 工程直径 DN 50 - DN 200》.pdf

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ASTM A961 A961M-2016 Standard Specification for Common Requirements for Steel Flanges Forged Fittings Valves and Parts for Piping Applications《钢制法兰 锻制配件 阀门以及管道应用零件的标准规格》.pdf

ASTM A961 A961M-2015 Standard Specification for Common Requirements for Steel Flanges Forged Fittings Valves and Parts for Piping Applications《钢制法兰 锻制配件 阀门以及管道应用零件的标准规格》.pdf

ASTM A961 A961M-2016a Standard Specification for Common Requirements for Steel Flanges Forged Fittings Valves and Parts for Piping Applications《钢制法兰 锻制配件 阀门以及管道应用零件的标准规格》.pdf

DIN 21057-6-2016 Pipe classes for process plants - Part 6 Technical delivery conditions for tube parts - Flanges for machine prefabrication《制炼厂的管道等级 第6部分 管零件的交货技术条件 机器预制法兰》.pdf

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