Precision seamless steel tube can choose electrode: 1. The manual electric arc welding, the strength grade for t-50 electrode: 506, 507, 502, 503, 552, 553, etc; 2. Automatic submerged arc welding, choose flux: 431 and 350, with H08A, H08MnA, H10MnA or H10MnSi electrode; 3. The CO2 gas shielded welding, often use H08Mn2Si and H10MnSi.Precision tube is a kind of important steel pipe type, in...