... .3.Certification, ISO9000,ISO9001,CE,API4.Size, 1/2 inch to 80 inch.5.Material:A105,Q235,A234WPB,20#,20G,WPL6 ... accept: fittings which larger than 30 inch, drawing is necessary to confirm.7.Product range, Elbow,Tee,Reducer,Bend,Flange,Forge ... in the same projectswith our fittings,shipment booking. weld-neck lange