... .Cert:TUV,ISO9001:2000,NK,BV3.best quality,good service2011 hot selling blind flange:1.Stainless Steel Flange export to European,Japan ... ,JISUAEStandard:ANSI B16.5,B16.47,B16.48,B16.36 4.Socket Welding Flange,Blind FlangePRESSURE GRADE:ASTM B16.5:150LBS ... FlangeWe manufacture all kinds of flange such as Drive Flange for Concrete mixer truck,forged flanges,blind flange and welded neck ...