- PN 6, PN 10, PN 16,PN 25, PN 40, PN63, PN 100, PN
- JS FITTINGS
- Grade 20 steel
- Monthly Output
- 500 tons
Manufacturer and supplier of carbon steel WN flanges
Production of GOST WN flanges
Material of the flange
All material will be tested before cutting. JS FITTINGS choose steel 20# and ASTM A105 to make GOST flanges and ASME flanges.
Forging the flange
JS FITTINGS has the advanced production equipment and technology to guarantee the flange precision.
Drilling the Flange
Automatic drilling machines have better efficiency than portable machine.
Machining the flange
After the last machine link, the flanges will be inspected again.
Weld Neck Flange
Weld neck flange (WN flange) has a neck that can relocate the ss of the pipe, so to reduce the pressure that is here in the flange bottom. It is compatible with the pipelines that work in high or low temperatures and bear high pressure. Especially for the pipe or the valves when PN is larger than 2.5 Mpa.
ASTM A105/N For carbon steel weld neck flange
ASTM A182 F11, F22 for alloy steel
ASTM A182 F304 / F304L, F316 / F316L for stainless steel weld neck flange.
Marks and package of the steel WN flanges
Applications and Features
Weld neck flange mainly used in medium, high pressure pipes connecting, most butt weld flange with neck also called nipple flange.