Commodity:galvanized straight beam welding tube OD:21.3-219mm MOQ:25MT Package:in ... required Payment:T/T or L/C Commodity:galvanized straight beam welding tubeStandard: BS, GB, ASTMStandard: BS 1387, GB 5310-1995 ... , GB 3087-1999, ...Grade: 10#-45#, Mn-V alloy, 15NiCuMoNb5, 16Mn, ...Grade: 10#, 20#, 15MnV, 09Mn2V, 15NiCuMoNb5, 16 ...