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                2019-11

                国家执行标准参数部分免费下载

                  钢制对焊管件GB/T12459-2017?钢制对焊管件GB∕T13401-2017??压力容器封头GB/T25198-2...

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                HG/T20592-20635-2009修改勘误表

                  HG/T20592-2009修改单链接: 文件下载 提取码: f2r2

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                20余年实体生产厂家营销现货板式平焊接法兰,带颈对焊法兰,法兰盖,盲板,中频煨弯线弯,大弯弯管,不锈钢◥金属软管无缝长半径弯头,三通,四通,大小头,异径管,变径管,封头,管帽,锻造高压管件,,单丝头,双丝头,皮管接头,阀门,片式球阀,闸阀,球阀,截止阀,止回阀,蝶阀,针型阀,安全阀,过滤器,垫片螺栓紧固件,wl重庆万里法兰管件阀门gr重庆国荣管件制造有限公司,碳钢,不锈钢,合金钢,低温钢,管线钢,特材等