professional manufacuture of flange size:DN15-DN2000 material:cs&ss pressure:5k,10k,16k,20k,30k,150# to 2500#,PN6-PN40 professional manufacuture of flangesize:DN15-DN2000material:cs&sspressure:5k,10k,16k,20k,30k,150# to 2500#,PN6-PN40professional manufacuture of flange1.Size:DN15 to DN2000,1/2" to 78"2.Material:carbon steel,stainless steel3.Standard:ANSI,DIN,JIS,BS,UNI,EN1092-1,SABS1123,AS2129, ...