HDPE Butt Fusion Fittings

Butt fusion and welding method is the most common method for connecting various diameter Polyethylene pipes for this moment. The ends of the Polyethylene pipes are heated and pressed together by specialized equipment to form a continuous ‘leak-proof’ pipe. Butt fusion pipes and fittings are as strong as the pipe itself and has the same life expectancy.

JUNNUO can supply various sizes HDPE Butt fusion fittings from DN63mm to DN1600mm. HDPE Butt Fusion fittings include: coupling, reducer, equal tee, reducing tee, elbow 45 degree, elbow 90 degree, stub end, flange, ball valve, end cap and so on. Can be customized according to requirements, our HDPE fittings are high quality new PE100 raw material, mainly used in HDPE pipes for water, oil and gas piping system.

HDPE Butt fusion fitting are fully accordance with ISO4427/ AS/NSZ 4130/ BS EN 12201/ SABS Standards.

HDPE Butt Fusion Fittings‌ are special connection fittings used when connecting PE pipes, especially playing an important role in the connection of HDPE pipes. These fittings are connected by heating to the melting point, which can meet the connection requirements of the same outer diameter, different outer diameters, tees, bends and other different requirements.

Connection method

The use of HDPE Butt Fusion Fittings is mainly achieved through hot-melt butt welding and electric fusion connection. Hot-melt butt welding is suitable for the connection of larger pipe diameters. After the two connection end faces are fixed and cleaned in a special HDPE pipe welding machine, they are heated to a certain temperature using a heating plate, and then quickly butted together under a certain pressure to achieve the connection of pipes or the connection between pipes and fittings. Electric fusion connection is considered to be one of the best connection methods for polyethylene pipes. It reaches the melting point under the action of electricity through HDPE Electrofusion Fittings to achieve high-quality connection, with the advantages of high strength, long life and good air tightness.

The use of HDPE Butt Fusion Fittings not only improves the reliability and safety of PE pipe connections, but also is widely used in various industrial and civil fields that require high pressure and high temperature due to its efficient and convenient construction method. Whether it is hot-melt butt or electric fusion connection, professional equipment and skills are required to ensure the quality and safety of the connection.

Advantages and characteristics

1. Physical properties and connection reliability: The HDPE pipe system is connected by hot-melt butt, and the strength of the joint is higher than the strength of the pipe body, ensuring the reliability of the connection.

2. Low-temperature impact resistance: HDPE pipes are safe to use in the temperature range of -60 to 60℃, have good low-temperature impact resistance, and will not cause pipe brittle cracking even during winter construction.

3. Wear resistance: Compared with steel pipes, HDPE pipes have 4 times the wear resistance of steel pipes, which are suitable for slurry transportation and have better wear resistance and longer service life.

4. Stress cracking resistance: HDPE pipes have low notch sensitivity, high shear strength and excellent scratch resistance, and outstanding environmental stress cracking resistance.

5. ‌Aging resistance‌: Polyethylene pipes containing 2-2.5% evenly distributed carbon black can be stored or used outdoors for 50 years without being damaged by ultraviolet radiation‌.

‌Low water flow resistance‌: The inner surface of HDPE pipes is smooth, the Manning coefficient is 0.009, and the non-adhesive properties ensure that the pipes have a high conveying capacity, while reducing the pressure loss and water delivery energy consumption of the pipeline.

JUNNUO extensive range of fabricated fittings includes:

1. HDPE Pipes. Pressure rating: SDR26-SDR7.4, with size from DN16mm-1600mm

2. HDPE Butt Fusion fittings. Pressure rating: SDR26-SDR7.4, with size from DN63mm-1600mm

3. HDPE Electrofusion fittings. Pressure rating: SDR26-SDR7.4, with size from DN20mm-630mm

4. HDPE fabricated fittings. Pressure rating: SDR26-SDR7.4, with size from DN20mm-1600mm

5. PP Compression fittings. Pressure rating: SDR26-SDR9, with size from DN20mm-110mm

6. HDPE Special customized fittings. Pressure rating: SDR26-SDR7.4, with size from DN110mm-1600mm

• Non-toxic, hygienic: PE pipe fittings are non-toxic and odorless. After strict health monitoring, they are green building materials and never produce scale, which can effectively improve water quality.
• Corrosion resistance: PE is an inert material that is resistant to various chemical media.
• PE pipe fittings are connected by electrofusion, and the interface strength is higher than the pipe itself.
• High toughness: The elongation at break of PE pipe fittings is generally above 500%. . For the uneven settlement of the foundation, it has strong adaptability and good seismic performance.
• Excellent resistance to rapid crack propagation (RCP).
• Excellent flexibility and scratch resistance.
• Good wear resistance, low wall friction coefficient, small flow resistance, strong conveying capacity.
• Very convenient construction and installation.
• Low system cost and reduced maintenance costs can greatly reduce project costs.
• Long service life: The buried PE pipe fittings are used normally for more than 70 years.
• PE accessories can be reused, fully in line with the advocacy of efficient environmental protection.