HOT SALE flange 1.standard:ANSI 2.Certificate:ISO9001:2000 ,API. 3.pressure:class150~2500, 4.Type:WN,SO PL,BL,SW, we specialize in this field for 22 years. we have the best machinery to product the high quality products ,we are glad to establishing business relation. 1.Material;carbon steel ,alloy steel ,stainless steel . 2.Size:DN15-DN1000. 3.Standard: ANSI B16.5,ANSI B16.47 ,GB,DIN,JIS ,BS,EN. ...