... Steel Pipe Material: 301, 304, 321, 316L, etc.Certificate: ISO, ASTM, GB, DIN, JIS, Etc 304 stainless steel black pipe price Commoditystainless steel pipe price per ... tonDescriptionstainless steel pipe, stainless steel seamless pipe, stainless welded pipeStandardAISI, ASTM, JIS, EN ...