Long weld neck flanges(abbreviated LWN) are similar to a standard welding neck flange,but the “neck” is considerably longer.This type is often used as a nozzle for a barrel or column.In addition,there are the type LWN heavy barrel (HB) and the equal LWN barrel (E);they have a different shape and a thicker “Wall”.

Long Welding Neck flange

Specifications
Long welding neck flange,lwn flanges are similar to a standard welding neck flanges,but the “Neck” is considerably longer than other flanges.LWN flange is often used as a nozzle for a barrel or column.In addition,there are the type LWN Heavy Barrel (HB) and the Equal LWN Barrel (E);they have a different shape and a thicker “Wall”.
Type: LWN Forged Flange,Long welding neck flange
Material: Carbon steel: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8,Stainless Steel: F304 F304L F316 F316L 316Ti,Copper etc.
Standard: ANSI/DIN/JIS
Size: 1/2-78 inch (DN15-DN2000)
Pressure: ANSI class 150,300,600,1500,2500,DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case
Surface Treatment: Anti-rust Oil,Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.
E-catalogue: Available,please visit catalogue of flange
Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas,Electric Power,Pipe Projects etc.