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材质不锈钢管厚咨询客服(mm)产地广东品牌LCV型号304重量1.6(kg)执行标准GB/T19228.2-2003壁厚2-3mm等级1.6MPA特殊功能钢度值低,弹性好,耐腐蚀,耐高压直径咨询客服产品规格DN100