- Surface treatment
- Anti-rust Oil
- A105, Q235
- forged, casting, machining
- Rust removal treatment, heat treatment
- 900lb, 1500lb
Class 900-1200 High Pressure steel Forged welding Neck Flanges for mining projects
Heat Treatment of WN Flanges
Since 1983, Hebei Jinsheng Pipe Fitting Manufacturing Co.,Ltd has been engaged in the industry of produce and supply steel flanges for 36 years. The new brand, JS FITTINGS will bring all clients new purchase experience.
Lathe machine processing of WN Flanges
The annual output of JS flanges are about 1000 tons per month, size from DN 15 to DN 2000. Not only ASME B 16.5, also GOST, DIN, EN, BS, SABS, JIS can be supplied.
Details of Surface Treatment
Markets of different kinds of surface
1. The yellow painting is bright and dazzling, it is needed in the markets of South East of Asia and Africa.
2. Black painting is looks more seriesly than other color, it is needed in the markets of South east and mild east of Asia.
3. Anti-rust oil is popular in the most markets of the world, and it's the cheapest treatment way.
About flange seal face
Full Face / Flate Face
FF flange has the advantages of Simple structure, convenient processing, easy to carry out anti-corrosion lining, suitable for occasions with low pressure, PN≤2.5Mpa.
The sealing surface of the raised face flange is flat, and the contact area with the gasket is large. After preloading, the gasket is easy to extend or move to both sides. The sealing property of the flange is poor, and it is only suitable for low pressure situations.
The groove of ring connection surface is trapezoidal groove, which needs octagonal gasket to seal. The two flanges are identical. The sealing surface is ring groove structure, suitable for pressure range of 2.5 - 16.0 Mpa. RTJ flanges are suitable for high temperature and high pressure condations.
Specification of ASME B16.5 Flanges
|Material||Carbon steel: A105, A105N Q235, 16Mn|
Stainless steel: A182 F304, A182 304L, A182 F316, A182 F316L, A182 F51 etc
|Technology||Forged Machine CNC Machinery Equipment|
|Surface Treatment||usually Black painting for A105 carbon steel;|
usually Bare for Stainless steel.
|Suitable Medium||water, oil, petroleum, gas, chemical, power, metallurgy, shipbuilding, construction etc.|
|Certificate||Mill test Certificate per EN10204/3.1 and EN10204 /3.2 is also available.|
|Certification||ISO 9001:2008 Quantity System.|
|Quality||First-class with finest workmanship.|
|Packing||Plastic bags, Carton, Plywood cases, pallets, or as per your request.|
|Delivery Time||5-30 days after the placement of the order according to your quantity.|
|Port of delivery||Xingang port, Shanghai port, Qingdao Port, others can be negotiated|
|Payment||T/T, L/C, all can be negotiated|
|Other||Special design available according to your requirements.|
Loading of WN Flanges