BV Certified Industrial Flanges DN15-DN600 ASTM A105 SS304 SS316 for Water Oil Gas Transport Systems
BV certified industrial flanges available in sizes DN15 to DN600, manufactured from premium materials including ASTM A105 carbon steel, Q235 steel, and stainless steel grades SS304, SS316, SS304L, and SS316L. Designed for reliable connection and transport of water, oil, and gas in industrial piping systems.
- Carbon Steel Flanges
- Cast Steel Flanges
- Alloy Steel Flanges
- Stainless Steel Flanges (SS304, SS316, SS304L, SS316L)
- Copper Flanges
- Aluminum Alloy Flanges
- Forged Flanges
- Cast Flanges
- Welded Flanges
- Chinese National Standards (Chemical, Petroleum, Power Industry)
- American Standards (ASTM)
- German Standards (DIN)
- Japanese Standards (JB)
| Series | Pressure Range |
|---|---|
| Series 1 | PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42 |
| Series 2 | PN0.25, PN0.6, PN2.5, PN4.0 |
| Type | Description |
|---|---|
| PL | Flat Welding Flange |
| SO | Flat Welding Neck |
| WN | Butt Welding Flange |
| SW | Socket Welding Flange |
| PJ/SE | Loose Flange |
| IF | Overall Tube Flange |
| Th | Threaded Flange |
| BL | Flange Cover |
| BL(S) | Lining Flange Cover |
- FF - Flat Face
- RF - Raised Face
- FM - Concave Surface
- MF - Convex Surface
- TG - Tongue and Groove Surface
- RJ - Ring Joint Surface
Designed for butt welding of flanges and pipes with nominal pressure range of 0.25-2.5Mpa. Features rational structure, high strength, excellent temperature and pressure resistance, reliable sealing performance, and durability against repeated bending and temperature fluctuations.
Suitable for carbon steel pipe connections with nominal pressure not exceeding 2.5Mpa. Available in smooth, concave-convex, and tongue-groove sealing surface types. Smooth flat welding flanges are most commonly used for mild media conditions including low-pressure non-purified compressed air and low-pressure circulating water systems.
Commonly used in pipelines with PN≤10.0Mpa and DN≤40.
Also known as loop flange, available as welding ring loop flange, flanged loop flange, and butt welding loop flange. Ideal for applications with moderate temperature and pressure but highly corrosive media, allowing cost-effective material selection.
Flange integrated with equipment, pipes, valves, and other components. Commonly used on specialized equipment and valve assemblies.
- Quality First: Strict production and inspection according to established standards
- Competitive Pricing: Market-based pricing with volume discounts
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- After-Sales Support: Comprehensive customer problem resolution
- Long-Term Partnership: Quality assurance and competitive pricing for sustainable cooperation
Shandong Zhengde Metal Manufacturing Co., Ltd. is an integrated enterprise specializing in hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products. With five production and sales bases across China and over 100 production lines, the company maintains 4 nationally recognized laboratories and multiple technical centers. Products are exported to over 50 countries worldwide including North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.
A: Yes, we provide free samples with express shipping service worldwide.
A: Please provide grade, dimensions (length, width, thickness), surface treatment requirements, and purchase quantities.
A: Yes, we have shipping agents and will coordinate the entire import process with you.
A: Standard shipments from Shanghai, Tianjin, Qingdao, Ningbo ports, with custom port options available.
A: We hold ISO 9001, MTC certifications, and support third-party inspections including SGS and BV.
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