铸铁管道法兰和法兰连接件，125磅，符合相关法兰钻孔尺寸标准。

Cast Iron Pipe Flanges and Flanges Fittings, 125 LBS. Conforms to related flange drilling.

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标准B16.1 -包括铸铁管道法兰和法兰连接件(125磅级和250磅级)。

A. N. S. I. Standard b16.1-covers cast iron pipe flanges and flanged fittings (Class 125 and 250).

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以真空阀门、真空泵及真空法兰连接件三大类为主导产品，拥有自营进出口经营权和十多项自主研发的专利产品。

Vacuum valves, vacuum pumps and vacuum flange connections are the three leading products, we possess import-export operations, and more than ten self-developed patent products.

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