... ,Corrosion resistanceASTM SA335 A335P22A335P5A335P9A335P91stainless steel pipe Applies to oil, aviation, metallurgy, food, water conservancy,electric power, chemical industry ... BA106 Bsteel pipe for structureUsed in general structure, engineering scaffolds, mechanicalASTM A53A53 Bpipeline steel pipeUsed in oil and natural ... in order to transmit the he oxygen,water and oilAPI 5LA,B,X42,X46,X52,X56,X60 ...