With operations spread across all 10 export locations and an annual turnover of 200,000 tons, we touch lives in every walk of life. Today, we supply steel to various sectors including Oil, Gas, Engineering and Construction, and are a leading structural steel distributor in the UAE.
Hebei Province: Known as a hub for flange and pipe fitting manufacturing, especially in cities like Cangzhou.
Zhejiang Province: Another major production area, with cities like Wenzhou housing numerous manufacturers.
Jiangsu Province: Particularly known for producing high-quality flanges, with a focus on international exports.
Weld Neck Flanges: Used in high-pressure systems requiring a strong, leak-proof connection.
Slip-On Flanges: Easier to install and suitable for low-pressure applications.
Blind Flanges: Used to seal off the ends of piping systems.
Threaded Flanges: Screwed onto pipes, ideal for low-pressure, non-critical applications.
Socket Weld Flanges: Used in small-sized, high-pressure pipelines.
Lap Joint Flanges: Utilized in systems requiring frequent disassembly and maintenance.
Orifice Flanges: Designed for use in flow measurement systems.
Carbon Steel: Commonly used for general-purpose flanges, often coated with anti-corrosive layers.
Stainless Steel: Used for corrosive environments, offering high resistance to rust and chemical exposure.
Alloy Steel: Provides additional strength and heat resistance for specialized applications.
Duplex Stainless Steel: Combines the benefits of both ferritic and austenitic stainless steels, offering high strength and corrosion resistance.
Nickel Alloys: For extreme conditions such as high-temperature and corrosive environments.
ANSI/ASME (American National Standards Institute/American Society of Mechanical Engineers): Widely used for flanges in the US and globally.
DIN (Deutsches Institut für Normung): German standards often used in Europe.
BS (British Standards): Standards used in the UK and former British colonies.
JIS (Japanese Industrial Standards): Standards commonly used in Japan and surrounding regions.
EN (European Norm): European Union standards.
ISO 9001: Quality management system certification.
PED (Pressure Equipment Directive): Required for flanges used in the European Union.
Hebei Haihao Group: One of the leading manufacturers of flanges, pipe fittings, and other pipeline accessories.
Wenzhou Yuzheng Valve Fittings Co., Ltd.: Specializes in stainless steel flanges and pipe fittings, serving both domestic and international markets.
Jiangsu Haohua Industry Group: A prominent manufacturer with a focus on high-quality, export-oriented products, including flanges for the oil & gas industry.
Shanxi Goodwill Industrial & Trading Co., Ltd.: Known for producing a wide range of flanges and fittings, particularly for export to Europe and North America.
Cangzhou Jiajin Pipeline Equipment Co., Ltd.: Focuses on producing carbon steel and alloy steel flanges for various industries.
Quality Concerns: Although many Chinese manufacturers adhere to international standards, there have been instances of quality issues. Buyers often perform third-party inspections to ensure product quality.
Intellectual Property Issues: Some international companies are cautious about intellectual property concerns when working with Chinese manufacturers.
Supply Chain Disruptions: Occasional disruptions due to factors like raw material shortages, transportation delays, and trade tensions can affect delivery times.
| Specification | Details |
|---|---|
| Flange Types | Weld Neck, Slip-On, Blind, Threaded, Socket Weld, Lap Joint, Orifice |
| Materials | Carbon Steel, Stainless Steel (304, 316, etc.), Alloy Steel, Duplex Stainless Steel, Nickel Alloys |
| Standards | ANSI/ASME B16.5, B16.47, DIN, JIS, BS, EN |
| Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 (ANSI); PN 10, 16, 25, 40, 64, 100 (DIN/EN) |
| Sizes | 1/2" to 48" (DN15 to DN1200) |
| Surface Treatment | Anti-corrosion coating, Galvanized, Black Paint, Anti-rust Oil |
| Production Process | Forged, CNC Machined, Heat Treated |
| Applications | Oil & Gas, Petrochemical, Water Treatment, Power Generation, Desalination, Construction |
| Certifications | ISO 9001, PED, API 6A, API 605 |
| Tolerances | As per ASME/ANSI or customer's specifications |
| Thread Types | NPT, BSP, BSPT |
| Quality Inspection | Ultrasonic Testing (UT), Radiographic Testing (RT), Magnetic Particle Testing (MPT) |
| Packaging | Wooden Cases, Pallets, Plastic Wrapping, Custom Packaging |
