Product Overview
Flange is a core detachable connecting component for piping systems, assembled by paired flange plates, fastening bolts and sealing gaskets. Evenly distributed bolt holes lock two flanges tightly to form reliable sealing joints. Our product range covers plate flat flanges, butt-weld flanges, threaded flanges, socket weld flanges, blind flanges and special mounting flanges, produced in carbon steel, stainless steel and alloy steel to match different industrial medium and pressure requirements.
Why Choose Our Flange Series Over Ordinary Fittings?
One-stop pipe fitting procurement
Wide pressure adaptability – Covers low-pressure water supply to ultra-high pressure chemical process pipelines.
Long service life – Stainless steel options resist rust and chemical corrosion, reduce later maintenance cost.
Flexible installation forms – Welded, threaded, socket-mounted and wall-mounted types for complex construction layouts.
Parameters
1. Available Material Grades
| Material Category | Common Grades | Application Scenarios |
|---|---|---|
| Carbon Steel | A105, Q235B, Q345B | Water supply, drainage, low-pressure gas pipelines |
| Stainless Steel | 304, 316L, 321 | Chemical wastewater, food processing, marine corrosive environment |
| Alloy Steel | 16Mn, F11, F22 | High-temperature steam, oil & gas high-pressure pipelines |
2. Pressure Standard Ratings
- European PN standard: PN10, PN16, PN25, PN40, PN63, PN100
- American ANSI standard: Class 150#, 300#, 600#, 900#, 1500#, 2500#
- Japanese JIS standard: 10K, 20K, 30K, 40K
3. Nominal Diameter Range
DN10 ~ DN3600, corresponding NPS 1/2" ~ NPS 144", custom ultra-large diameter flanges supported.
4. Main Sealing Surface Types
- RF Raised Face: General industrial pipeline, most widely used
- FF Full Flat Face: Low-pressure non-toxic medium, plastic pipe matching
- MFM Concave-Convex Face: Medium pressure, easy gasket positioning
- RTJ Ring Joint Face: Ultra-high pressure, high-temperature oil & gas pipelines
- TG Tongue & Groove Face: Highly toxic, volatile chemical media
Surface Treatment Options
Stainless steel
Polished, pickling passivation, matte drawing
Carbon steel
Anti-rust oil, black paint, hot-dip galvanized, epoxy coating
Application Range
Flange series are widely used in various piping systems, the main application scope includes the following aspects:
1. Petrochemical industry: Flange series are an indispensable part of petrochemical piping systems, used to transport various chemicals, oil and natural gas, etc.
2. Paper industry: Flange series can be used in paper production lines in the transport piping system.
3. Food processing: Flange series can be used in food processing equipment and piping systems.
4. Waste water treatment: Flanges are used in waste water treatment equipment and piping systems.
5. Construction: Flanges are used in water supply, drainage and air conditioning piping systems in construction projects.
Key Features
Multi-Standard Compliance
Manufactured to ASME, DIN, GB, JIS, EN standards, full mill test certification supplied.
01
Excellent Sealing Performance
Multiple sealing surface options to eliminate leakage under high pressure & high temperature, suitable for flammable, explosive and corrosive media.
02
Easy Disassembly & Maintenance
Bolted split design allows quick disassembly for pipeline inspection, cleaning and component replacement.
03
Wide Material Matching
Compatible with carbon steel pipe, stainless steel pipe, plastic pipe and fiberglass pipe.
04
Strong Structural Stability
Forged blank forming with uniform grain structure, anti-fatigue under long-term pipeline vibration and pressure fluctuation.
05
why choose us?
Mass Stock Supply : standard size flanges (DN50-DN1200) in stainless steel & carbon steel for instant delivery.
Full Custom Machining : OEM drawing processing, non-standard hole spacing, special thickness and mounting bracket customization.
Global Shipping Support : Bulk vessel, container transport to Southeast Asia, Europe, Middle East, North America major ports.
Direct Factory Price : Independent forging & machining workshop without intermediate markup, competitive bulk order discount.
Get the quotation within 24 hours
one-stop solution
professional team
high quality
our Partners
We trusted by
User Evaluation
Mr. Wang Tao
Shanghai · Environmental Engineering Co., Ltd.
Ms. Lee Min Seok
Busan · Marine Equipment Manufacturer Korea
Mr. Rajesh Kumar
Manchester · General Machinery Factory UK
FAQ
01.What are the differences between slip-on flange and weld neck flange?
Slip-on plate flange slides over pipe for fillet welding, low cost, applicable for PN16 and below low-medium pressure pipelines. Weld neck flange adopts butt welding structure with stress dispersion neck, high structural strength, suitable for high temperature, high pressure and heavy vibration industrial pipelines.
02.How to select flange material for corrosive medium?
03.What causes flange leakage during operation? How to solve it?
04.Can you produce non-standard special flanges?
Yes, we support full customization according to customer drawings, including special outer diameter, non-standard bolt hole quantity, U-type mounting base, welded short tube integrated flanges and other special structural products.
Hot Tags: flange, China flange suppliers, stainless steel cutters, stainless steel reducers, stainless steel connectors, stainless steel flanges, stainless steel impact resistance, stainless steel lining