GB/T 5293-2018??埋弧焊用非合金鋼及細晶粒鋼實心焊絲、藥芯焊絲和焊絲-焊劑組合分類要求
Defines the technical delivery conditions for welded tubes of circular cross-section, made of non-alloy quality steel with specified room temperature properties.
DIN 8557 T.1-1981? 埋弧焊填充金屬絲.合金鋼以及非合金鋼的連接焊.標記.交貨技術條件
