Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, chrome molybdenum steel, and other materials.
阀门主体材质有铸铁、球铁、碳钢、合金钢、不锈钢、铬钼钢等材质。
Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, chrome molybdenum steel, and other materials.
阀门主体材质有铸铁、球铁、碳钢、合金钢、不锈钢、铬钼钢等材质。
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