不锈钢新旧焊丝牌号对照

旧国标新国标日标欧盟标准奥氏体不锈钢11Cr17Mn6Ni5N12Cr17Mn6Ni5NSUS2011.4372查询21Cr18Mn8Ni5N12Cr18Mn9Ni5NSUS2021.4373查询31