1.size:6inch 2.wt:std sch40 3.standard: ASTM A53/106 234 4.material:WPB GR.B TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical,electric power,boiler etc as they Resistance to high temperature, low temperature resistance,Corrosion resistanceASTM SA335 A335P22A335P5A335P9A335P91stainless steel pipe Applies to oil, aviation, metallurgy, food, water conservancy,electric ...