stainless steel welded/flue wind pipe/tube 1.OD:9.53-254mm 2.WT:0. ... .201,202,304,316,316L,430 stainless steel welded/flue wind pipe/tubeNameStainless Steel Welded pipeStandardASTM A312, A249,A269 and A270 ... ,202,304,316,316L,430Main Materiala) 201 (Ni0.8%-1%)b) 202 (Ni: 3.5%-4.5%)c) 304 (Ni: 8 ... ,window, balcony,fence,bench,furniture,etc stainless steel welded/flue wind pipe/tube