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简介：9科尔沁左翼后旗200SIQP3HEA铁素体和奥氏体合金钢管的一般要求ASTMA530专门用途的铁素钢和合金钢的一般要求ASTMA789一般要求碳素体奥氏体不锈钢无缝钢管和焊接钢管JISG3456-88机械结构用不锈钢管JISG3448-8
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