I Product Introduction
PB Pipe (Polybutylene Pipe) is a high-performance piping system manufactured from a high molecular inert polymer synthesized from butene-1, known as the “Plastic Gold” . PB material offers exceptional temperature resistance, durability, and chemical stability . Widely used in building hot/cold water supply, underfloor heating, radiator connections, air conditioning systems, industrial pipelines, and municipal water supply, PB pipe is the ideal choice for premium piping systems due to its excellent creep resistance, flexibility, and long service life .
I Product Features
1. Excellent Heat Creep Resistance
PB pipe offers exceptional heat creep resistance, enabling long-term operation at 95°C and momentary temperatures up to 110°C . It maintains dimensional stability and mechanical strength even under high-temperature and high-pressure conditions.
2. Extended Service Life
Known as “Plastic Gold,” PB pipe provides a design service life of 50-100 years . Its high molecular inert polymer structure delivers excellent aging resistance, ensuring long-term system stability.
3. Excellent Flexibility for Easy Installation
PB pipe is highly flexible with a minimum bend radius of only 5 × O.D. , easily bending around obstacles and reducing fitting usage and potential leak points. Pipes are supplied in coils up to 500 meters , significantly improving installation efficiency, especially in confined spaces and complex layouts .
4. Lightweight for Easy Handling
PB pipe weighs only 1/20 of galvanized steel pipes , making it easy to transport and install while reducing labor costs and construction intensity.
5. Corrosion Resistant and Scale Free
PB pipe resists acids, alkalis, and chemical corrosion—non-rusting and non-scaling . With excellent chemical stability and pH tolerance range of 2-12 , it does not react with water quality, ensuring hygienic water supply.
6. Smooth Inner Wall with High Flow Capacity
PB pipe features a smooth inner wall with a friction coefficient of only 0.004 , providing low flow resistance and scaling resistance, increasing water flow by 30% compared to galvanized pipes . It maintains high flow rates and efficient heat transfer during long-term use.
7. Freeze and Heat Resistant for Wide Applications
PB pipe operates within a wide temperature range of -20°C to 110°C , adapting to various climate conditions and applications.
8. Excellent Thermal Insulation
PB pipe has a thermal conductivity of only 0.24 W/(m·K) , providing excellent insulation performance and saving 30% energy in underfloor heating systems .
9. Multiple Connection Options
PB pipe supports various connection methods: socket fusion, electrofusion, compression fittings, and push-fit connections . Large diameter pipes can also be joined using butt welding . Reliable connections with flexible installation options for different project requirements.
I Technical Specifications
Parameter | Specification |
Material | Polybutene (PB), high molecular inert polymer from butene-1 |
Density | 0.92-0.94 g/cm³ |
Operating Temperature | 20°C to 110°C |
Long-term Temperature | 95°C |
Max. Temperature | 110°C |
Pressure Rating | 1.6-3.2 MPa |
Thermal Conductivity | 0.24 W/(m·K) |
Expansion Coefficient | 1.3 x 10⁻⁴ K⁻¹ |
Min. Bend Radius | 5 × O.D. |
Friction Coefficient | 0.004 |
Sizes | 16-110mm |
Supply Form | Coils: 50-500m; Straight lengths: 4-6m |
Connections | Socket fusion, electrofusion, compression, push-fit, butt welding |
Standards | GB/T 19473.2, ISO 15876, DIN 16892/16893 |
I Product Specification
I Application
Application Field | Specific Applications |
Residential Hot/Cold Water | Home, apartment water supply |
Underfloor Heating | Floor heating systems |
Radiator Heating | Radiator supply and return connections |
Central Air Conditioning | HVAC supply and return lines |
Solar Water Heating | Solar collector connections |
Industrial Piping | Food, chemical process water |
Municipal Water Supply | Public water lines |
Fire Protection | Sprinkler systems |
Hot Spring Pipes | Hot spring water delivery |
Snow Melting | Road, parking lot systems |
Agricultural Irrigation | Greenhouse, irrigation systems |
I FAQ
1. Why is PB pipe called “Plastic Gold”?
PB pipe is manufactured from high molecular inert polymer (butene-1), offering exceptional temperature resistance, durability, and chemical stability . It combines: 95°C long-term operation, 110°C momentary resistance, 50-100 year service life, plus flexibility, corrosion resistance, and non-scaling properties—earning the title “Plastic Gold” .
2. PB vs. PPR pipe differences?
PB offers better temperature resistance (95°C vs PPR’s 70°C), superior flexibility (5× bend radius vs PPR’s 8×), longer service life (50-100 years vs PPR’s 50), and better insulation (0.24 vs PPR’s 0.41-0.45 W/m·K). PB is premium material for demanding applications.
3. PB pipe service life?
Under normal conditions: 50-100 years . High molecular inert polymer structure provides excellent aging resistance for long-term stability.
4. Can PB pipe be used for drinking water?
Yes. PB pipe is non-toxic and odorless, compliant with GB/T 17219 drinking water standards , does not promote bacterial growth, and is chemically inert with water quality.
5. PB pipe connection methods?
Multiple options: socket fusion, electrofusion, compression, push-fit; large diameters support butt welding . Fusion ideal for prefabrication; compression and push-fit for on-site installation .
6. PB pipe installation temperature?
Excellent low-temperature flexibility—installable at -5°C without preheating , ideal for winter construction and cold regions.
7. Is PB pipe suitable for underfloor heating?
Highly suitable. Excellent insulation (0.24 W/(m·K)) saves 30% energy in underfloor heating . Flexibility enables easy coil laying; heat creep resistance ensures long-term stability. Beijing National Centre for the Performing Arts uses PB pipe for over 10,000 m² of underfloor heating .
