HOT SALE flange 1.standard:ANSI 2.Certificate:ISO9001:2000 ,API. 3.pressure:class150~2500, 4.Type:WN,SO PL,BL,SW, we ... B16.5,ANSI B16.47 ,GB,DIN,JIS ,BS,EN. 4.working press: CLASS 150~2500,PN2.5~400 Production: flangeType ... /2637/263JIS B2220-2004GB/T9112-2000 GB/T9116 1-2000 GB/T9116 2-2000 GB/T9116 3-2000 GB/T9116 4-2000 GB/T9124-2000BS 1560 ...