產品種類:不銹鋼換熱管
產品規(guī)格:19mm-89mm
生產標準:GB/T 14976-2012, GB/T 13296-2013, GB3087-1999,GB5310-1995,.GB/T 21833-2008,ASTM-A312, ASTM-A213, ASTM-A269等