ICS 25.160.20 J 33 GB 中华人民共和国国家标准 GB/T5293—2018 代替GB/T5293—1999 埋弧焊用非合金钢及细晶粒钢实心焊丝、 药芯焊丝和焊丝-焊剂组合分类要求 Solid wire electrodes,tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels (ISO 14171:2016,Welding consumables—Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steelsClassification,MOD) 2018-03-15发布 2018-10-01实施 中华人民共和国国家质量监督检验检疫总局 发布 中国国家标准化管理委员会