ASTM A53 Gr.B electric resistance welded(ERW) steel pipes are manufactured as per ASTM A53 specification,they are welded steel pipes made by electric resistance welding method.ASTM A53 specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 18 to NPS 26(DN6 to DN 650).It is acceptable for welding,flagging China Square Hot-Dipped Galvanized Welded WireHot-dipped galvanized,coated thickness and nonuniform coating.Coating are usually 45-300 microns with darker color and good corrosion resistance.Hot-DIP galvanized wire amout of zinc 30-60 G/M² .2) Welding Type.Electro galvanized before welded wire mesh.Electro galvanized after welded wire mesh.Hot-dipped galvanized before welded wire mesh
Seamless steel pipes hot-deformed,from low-alloy carbon or alloy steel with or without anticorrosion coating under specification API 5L GrB and GOST 8732-78.Dimensions Outside diameter from 20 to 550 mm.Wall thickness of 2.5 to 75 mm.Length 6000 mm.Technical specifications Steel grade and delivery conditions - according to GOST 8731-74 Quality Steel Plate Pipe Seamless Stainless Steel Pipe 0.3mm stainless steel sheet 316 With Surface of 2B BA HL NO.4 8K ,1000mm - 2000mm Width.ERW Steel Pipe.Large Diamete 30 ERW Carbon Steel Pipe ,ERW Welded Pipe For Transporting Oil.Welding API 5L Carbon Steel ERW Steel Pipe OD Size 219 mm - 820mm For Construction.ASTM A53 Grade B ERW Pipe ,ERW Black Steel Pipe For Petrolum / Natural Gas
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