1.Product name:Large size steel pipe welding 2.OD:20-219mm 3.THK ... :0.7-30mm 4.Price:755-850USD/T 5.MOQ:20T 1)Large ... size steel pipe welding2)SIZE:20-219mm 3)Thickness:0. ... T3091-2001,etc.LengthAs per client’s requirementUsagePetrol, gas, water pipe, construction, structure, scaffold, chimney potProcessing techniqueThreading, coupling, ...