... price long term cooperation 201# 1.52mm50*50mm stainless steel square pipe,stainless steel tubestandard nickle percentgood pricelong term cooperation Standard:GB/T14975 ... pipeApplication:oil, chemical, boiler industry, high temperature resistance,resistant corrosion.Steel grade:TP304L, 316L, 321, 310, 904, duplex,nickel alloy If ...