... : A105Connectionbutt-weldingApplication rangeOil, Chemical, industry, water conservancy ,electric power ,boiler, machinery, metallurgy, etc.QualityISO9001, CRN in CanadaPackagingWooden or Plywood Case and ... to establishing business relationships with you 6" ASTM A105 CL150 RF ASME B16.5 BLIND FLANGE