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A flange is a detachable connecting component widely used in industrial piping systems to connect pipes, valves, pumps, and pressure vessels. By tightening bolts to compress a gasket between two flange faces, it creates a secure and reliable sealing connection.
With easy installation, convenient disassembly, and simple maintenance, flanges are essential pipeline components widely used in oil & gas, chemical, power generation, water treatment, HVAC, and other industrial piping projects.
| Parameter | Details |
| Pressure Rating | Class 150 / 300 / 600 / 900 / 1500 / 2500; PN16 / PN25 / PN40 |
| Nominal Diameter | 1/2"–80", DN15–DN2000; Customized non-standard sizes available |
| Main Materials | Carbon Steel: A105, Q235 |
| Stainless Steel: 304, 316, 316L | |
| Alloy Steel: A182 F11, A182 F22 | |
| Sealing Face Types | RF (Raised Face), MFM (Male & Female), TG (Tongue & Groove), RJ (Ring Joint) |
| Manufacturing Process | Integral forging and CNC precision machining; No sand holes or porosity, ensuring accurate dimensions and reliable performance |
| Working Temperature | Carbon Steel: -20°C to 425°C |
| Stainless Steel: -80°C to 550°C | |
| Alloy Steel: Up to 600°C+ | |
| Connection Types | Welded connection, Threaded connection, Bolt flange connection |
|
Type |
Materials |
Features & Applications |
|
Carbon Steel Flanges |
Q235, ASTM A105 |
Excellent cost performance; widely used in general industrial applications including water supply systems, oil & gas pipelines, and normal temperature and pressure piping projects |
|
Stainless Steel Flanges |
304, 316, 316L |
Excellent corrosion resistance, acid resistance, and alkali resistance; suitable for chemical plants, marine engineering, food processing, pharmaceutical industries, and other applications requiring high corrosion resistance |
|
Alloy Steel Flanges |
ASTM A182 F11, ASTM A182 F22 |
Designed for high-temperature and high-pressure applications; widely used in power stations, steam pipelines, petrochemical plants, and other demanding industrial environments |
Our flanges are manufactured in strict accordance with international standards, including GB/T, ASTM, ASME, DIN, ISO, JIS, and GOST.
Advanced forging technology and precision machining ensure accurate dimensions, reliable sealing performance, and excellent compatibility with global piping systems.
Customized production according to customer specifications and project requirements is also available.
Our flanges are widely used in various industries, including:
Oil & Gas Projects, Chemical Plants, Petrochemical Industry, Power Stations, Water Treatment Facilities, HVAC Systems, Pressure Vessel Systems, Marine Engineering, Food Processing Industry, Pharmaceutical Industry, Industrial Piping Systems
What certifications do your products have?
Our products have obtained ISO, CE, ASME, and other internationally recognized certifications. Strict quality control is implemented throughout the production process to ensure reliable product quality.
What is your annual production capacity?
Our annual production capacity exceeds 100,000 tons, allowing us to meet large-volume orders and urgent project requirements.
Can you provide free samples?
Yes, we can provide free standard samples. Customers only need to cover the shipping cost. The freight cost can be refunded or deducted after placing an official order.
What is your delivery time?
Delivery time depends on order quantity and product specifications. Standard orders usually take 15–30 days, while customized products will be scheduled according to specific requirements.
What payment terms do you accept?
We accept T/T, L/C, Alipay, Wire Transfer, and other agreed payment methods. Standard payment terms are usually 30% deposit and 70% balance before shipment.
Which ports do you usually ship from?
We usually ship from Tianjin Port, China. Other ports can also be arranged according to customer requirements.
Send us your drawings or requirements and get a fast quotation today.
