Specifications and Advantages of BTS Multilayer Pipes

Specifications and Advantages of BTS Five-Layer Pipes

Generally, five-layer pipes are categorized based on the types of polymers used in their structure:

1. PE-RT / AL / PE-RT

2. PE-X / AL / PE-X

3. PE-X / AL / PE-RT

BTS pipes are of the PE-Xb / AL / PE-RT (Type II) variety, manufactured under strict quality control processes and tested according to defined standards and procedures.

• The inner layer is made of PE-Xb, a cross-linked polyethylene (using the silane method), which is ideal for potable water and heating/cooling systems. Its key advantage is the very smooth internal surface, which prevents pressure loss, scaling, and corrosion.

• The outer layer is made of PE-RT (Type II), which provides excellent mechanical and chemical protection against external impacts and scratches. It also protects the pipe from electrochemical reactions with soil and external substances.

• The middle layer is composed of aluminum alloy, which acts as a barrier to oxygen and light while adding flexibility and mechanical strength. This layer must have a tensile strength of 100 MPa and a minimum elongation at break of 20%.

• The aluminum layer in BTS pipes is joined using ultrasonic butt-welding, where high-frequency mechanical vibrations fuse the aluminum edges together.

• Bonding layers of high-performance polyethylene adhesive connect the aluminum to the inner and outer layers. This adhesive is engineered to withstand high temperatures over extended periods while maintaining layer integrity.

📦 Sizes and Packaging

BTS pipes are available in the following formats:

• Sizes 16–32 mm: supplied in coils of 200 to 50 meters

• Sizes 40, 50, and 63 mm: supplied in 5.25-meter straight lengths

All dimensions, including outer diameter, wall thickness, aluminum thickness, and inner diameter, comply with relevant standards.

• Maximum working pressure: 10 bar

• Maximum operating temperature: 95°C

✅ Key Advantages of BTS Five-Layer Pipes

• Lightweight and long-lasting due to the combination of polymer and aluminum

• Easy to transport and store (coiled sizes for 16–32 mm)

• Flexible and easy to install thanks to the use of PE-X and PE-RT polymers

• High mechanical and chemical resistance provided by the PE-RT outer layer

• Reduced installation errors and labor mistakes

• Shorter installation time and lower costs due to hand-bendable pipes and fewer fittings required

• No change in water color or odor (thanks to PE-X in the inner layer)

• Oxygen barrier and low thermal expansion due to the aluminum layer

• Ideal thermal conductivity and long-term heat/pressure resistance (polymer + aluminum)

• Low pressure drop, anti-scaling and anti-corrosion inner layer (smooth PE-X surface)

• Minimized noise from the system, including water hammer effects