Stainless Steel Flanges | Industrial Pipe Flanges Manufacturer
We manufacture and supply stainless steel flanges for industrial piping systems, suitable for connecting pipes, valves, pumps, heat exchangers, and process equipment in oil, gas, petrochemical, power, and water treatment applications.A flange is a critical piping component used to connect pipes, valves, pumps, heat exchangers, and other equipment in industrial systems. Stainless steel flanges are widely preferred for their excellent corrosion resistance, high strength, durability, and suitability for demanding operating conditions.
We supply multiple types of stainless steel flanges for diverse piping projects. The Weld Neck Flange features a tapered hub for high-pressure and high-temperature pipeline service, while the Slip On Flange offers easy installation and cost-effective performance for low to medium pressure systems. Both forged stainless steel flanges comply with ASME and EN standards and are widely used in oil, gas, chemical and water treatment pipelines.
Technical Table Of Stainless Steel Flanges
| Item | Specification |
|---|---|
| Product Name | Stainless Steel Flange |
| Material Grade | ASTM A182 F304, F304L, F316, F316L, F321, F347 |
| Manufacturing Standard | ASME B16.5, ASME B16.47, EN1092-1, DIN, JIS |
| Flange Type | WN, SO, PL, SW, TH, LJ, BL |
| Pressure Class | Class150, Class300, Class600, Class900, Class1500, Class2500 |
| Face Type | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
| Size Range | 1/2″ – 48″ (Custom sizes available) |
| Production Method | Forged |
| Surface Treatment | Pickling & Passivation, Anti-rust oil |
| Application | Oil & Gas, Petrochemical, Power, Water Treatment, Marine, Food & Pharmaceutical |
Key Applications OfStainless Steel Flanges
- Oil and gas industry
- Petrochemical processing
- Power generation
- Water treatment and desalination
- Pharmaceutical and food processing
- Shipbuilding and marine engineering
- Heavy industry and structural connections
Connection method：
A flange connection is the process of first fixing two pipes, fittings, or equipment onto a flange, then adding a flange gasket between the two flanges and fastening them together with bolts to complete the connection. Some pipe fittings and equipment already come with flanges, which also belong to flange connections. Flange connection is an important connection method in pipeline construction. The flange connection is easy to use and can withstand high pressure. In industrial pipelines, in households, the diameter of the pipeline is small and it is low-pressure, so flange connections cannot be seen. If there are flanged pipes and equipment everywhere in a boiler room or production site. [1]
According to the connection method, flange connection types can be divided into: plate flat welding flange, neck flat welding flange, neck butt welding flange, socket welding flange, threaded flange, flange cover, neck butt welding ring loose sleeve flange, flat welding ring loose sleeve flange, ring groove surface flange and flange cover, large diameter flat plate flange, large diameter high neck flange, eight shaped blind plate, butt welding ring loose sleeve flange, etc
Specification:
- Sizes:1/2”-120”;DN15-DN3000
- Materials:
Carbon steel flange (CS) : ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70;
Stainless steel flange (SS) : ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy flange (AS) : ASTM A182F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, ST45.8;
- Standards:
ASME B16.5; HG20592; DIN2527、2573、2627-2638、2673、2552、2653、2655、2656、2641、2642、2565-2569; GOST12820; JIS B2220
FAQ
Q: What pressure rating can stainless steel plate flange support?
A: Our Plate Flange is forged from stainless steel, available in Class150 to Class600. It is ideal for low and medium pressure piping systems in water treatment and general industrial pipelines.
Q: Can blind flange be used for pipeline hydrostatic pressure test?
A: Yes. The Blind Flange is commonly installed at pipe ends for hydrostatic pressure testing and pipeline isolation. It can withstand high test pressure according to ASME B16.5 standard.
