PIPE CONNECTION SOLUTIONS WITH CHAU DUONG FLANGES

In a piping network, flanges are indispensable for ensuring the smooth operation of the entire system. What exactly are flanges, and why are they essential? Let’s explore these essential fittings with Chau Duong.

1. Definition of Flanges

A flange is a fitting used to connect pipes, pumps, valves, and other piping components by securing them with bolts on the flange body, forming a complete industrial piping system.

2. Why Use Flanges?

Flanges are widely used in fields requiring pipe installations, such as water supply and drainage and the oil and gas industry, due to their design benefits, which include:

• Ease of installation, inspection, and repair

• Simplified maintenance and operation

• Enhanced inspection and adjustment efficiency

Hollow Flange

3. Common Types of Flanges Today

• Plate Flange (PL): One of the most widely used flange styles, this type has a round disk shape with a central hole and surrounding bolt holes for bolted connections.

• Slip-On Flange (SO): This flange type connects to pipes by welding both its inner and outer surfaces. It typically has an inner diameter 2-3mm larger than the pipe’s diameter, allowing it to slide onto the pipe.

• Welding Neck Flange (WN): Featuring a tapered neck forged to a thickness thinner than most flanges of similar size, this type is designed for V-weld connections with pipe ends or fitting connectors to minimize pressure concentration.

• Blind Flange (BL/BF): This flange has no central hole and is commonly used to seal temporary pipe ends, allowing for easy disassembly and enabling efficient system pressure testing.

• Threaded Flange (TF): Connected to the pipe through threading, where the inner thread is on the flange and the outer thread on the pipe, this type is suitable for pipes that cannot be welded, small pipes, or in flammable areas where welding is risky.

• Lap Joint Flange (LJ): Typically used with a short Stub End welded directly to the pipe, secured by the flange, this type is ideal for low-pressure short pipes or non-critical applications due to its low cost.

Blind Flange

4. Technical Specifications of Flanges

• Size: DN15 - DN2000

• Steel Grades: SS400/Q235, 304, 316L, 310S, Duplex, etc.

• Standards: BS, JIS, DIN, ANSI

• Pressure Ratings: JIS5K, 10K, 20K, PN10, PN16, PN25, PN40, etc.

• Operating Media: Freshwater, wastewater, gas, chemicals, fuel, etc.

5. Chau Duong – Trusted Flange Supplier in Hanoi

Chau Duong International Industry Co., Ltd. is a reliable supplier that partners directly with ChangShu FengYang Special Steel in China to provide alloy steel products, custom-crafted alloy fittings, fixed-shape materials, customizable materials, and machined steel products for clients nationwide.

• Genuine imported goods with diverse designs and specifications

• High-quality materials such as stainless steel, carbon steel, and alloys

• Excellent corrosion resistance, high thermal and mechanical strength, easy processing

• Complete documentation, including C/O, C/Q, MTC, invoices, and relevant certificates

• Direct factory pricing without intermediaries

• Delivery methods: CIF/CFR at ports, FOB, local warehouse delivery, etc.

• Competitive pricing and guaranteed on-time delivery

After over 15 years in operation, Chau Dương has expanded international services to regions including South Korea, Shanghai, Changshu, and Hong Kong, holding numerous independent certifications and import-export rights.

Contact us now for the best pricing on flanges!