Weld Neck Flanges have a long tapered hub and are often used for high pressure applications. The three most common types of facings that we carries for weld neck flanges are raised face (most common), flat face, and ring type joint (RTJ).
The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value.
Expander Flange is a Welding Neck pipe flange where the nominal size of the non-flanged end is larger than the nominal size of the flanged end. They can be used to change the size of a pipe run. These are usually used to increase the line size to the first or second larger size. This is an alternative to using a separate reducer and weld neck flange combination. The expander flange can be used to connect pipe to pumps, compressors and Valves.
These flanges are available in all of our stainless steel and chrome-moly grades, from ½” to 36” and beyond, class 150 to 2500. We also stock large diameter Series A B16.47 Weldneck flanges in A105N, and can supply Series B Weldnecks with longer lead times. We can also source many of your other specification requirements.
Weld Neck Flange: 3/8"～160"
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400
Flange Facin Types
American Series:Flat Face (FF), Raised face (RF), groove (G), femaie(F), ring joints face(RJ)
Material: ASTM A105,20#
Surface treatment: Transparent oil, rust-proof black oil or hot galvanized.
Payment:T/T OR L/C.
Major Products: Seamless pipes,Elbow, Reducer, Tee, Pipe Cap, Flange and etc...
Special design available All the production process are made according to ISO9001:2000 strictly.
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