Name and code of pipe flange
Common Pipe Flange Full Names & Abbreviation Codes
When placing orders, making drawings and technical communication, international buyers widely use unified flange abbreviation codes. The standard names and codes are listed below:
| Full Name | Abbreviation Code | Chinese Name |
|---|---|---|
| Weld Neck Flange | WN | 对焊法兰 |
| Slip On Flange | SO | 带颈平焊法兰 |
| Socket Weld Flange | SW | 承插焊法兰 |
| Threaded Flange / Thread Flange | TH | 螺纹法兰 |
| Lap Joint Flange | LJ | 松套法兰 |
| Blind Flange | BL | 盲板法兰 / 盲法兰 |
| Reducing Flange | RFJ / RED | 异径法兰 |
Sealing Face Name & Code
Sealing surface is an important parameter in flange specification:
| Full Name | Code | Chinese Name |
|---|---|---|
| Raised Face | RF | 突面 |
| Flat Face | FF | 平面 |
| Ring Type Joint | RTJ | 环连接面 |
| Male and Female Face | MFM | 凹凸面 |
| Tongue and Groove Face | TG | 榫槽面 |
Common Pressure Class Markings
American Standard
Class150, Class300, Class600, Class900, Class1500, Class2500
European / Chinese Standard
PN6, PN10, PN16, PN25, PN40, PN63, PN100
Standard Code Reference
ASME B16.5: Steel Pipe Flanges and Flanged Fittings (NPS 1/2 ~ NPS 24)
ASME B16.47: Large Diameter Steel Flanges (NPS 26 ~ NPS 60)
EN 1092-1: Steel flanges for piping
GB/T 9113 ~ GB/T 9124: Chinese standard steel pipe flanges
Complete Flange Specification Example
WN RF Class150 NPS4 A105 ASME B16.5
Explanation:
Weld Neck Flange, Raised Face, Pressure Class150, Nominal Size NPS4, Material A105, manufactured per ASME B16.5.
About Cangzhou Yunxinda International Trade Co., Ltd.
Cangzhou Yunxinda International Trade Co., Ltd. supplies all standard types of flanges: WN, SO, SW, TH, LJ, BL and reducing flanges.
Materials include carbon steel A105, stainless steel F304 / F316, alloy steel F11, F22. Products comply with ASME, EN, GB, JIS standards with various sealing faces (RF, FF, RTJ, MFM, TG).
We also provide supporting pipe fittings: elbows, tees, reducers, pipe caps and crosses. Our team can confirm flange name, code, size, pressure rating and standard according to your drawings. Material Test Reports (MTR) and third-party inspection can be provided.
Our piping products are exported to the Middle East, Southeast Asia, Europe and America, serving petrochemical, natural gas, power station, water treatment and construction industries. Global purchasers are welcome to send inquiries.
