PE100 Material Introduction
PE100 (Polyethylene 100 Grade) is a third generation high-density polyethylene (HDPE) material with excellent mechanical properties and chemical corrosion resistance. Its name is derived from the international standard ISO 12162, which means that the minimum required strength (MRS) reaches 10MPa (100bar) and can withstand long-term hydrostatic pressure. Compared with PE80, PE100 has significant improvements in the following aspects:
Higher pressure resistance: working pressure increased by more than 25%
Stronger crack propagation resistance: resistance to slow crack growth (SCG) increased by 10 times
Longer service life: design life can reach 50-100 years
Core advantages of PE100 pipe fittings
1. Excellent physical properties
Density: 0.945-0.965 g/cm³
Elastic modulus: 800-1000 MPa
Elongation at break>350%
Low temperature resistance: -70℃ still maintains toughness
2. Chemical stability
Resistant to:
Acid and alkali solutions (pH 2-12)
Salt corrosion
Organic solvents (short-term contact)
3. Convenient installation
Hot-melt connection strength ≥ 90% of the main material
Electrofusion connection has a high degree of automation
Weight is only 1/8 of metal pipe fittings
Main pipe fitting types and technical parameters
| Type | Size Range | Pressure Rating | Connection Method |
| Equal Tee | DN63–DN800 | PN6–PN25 | Butt Fusion / Electrofusion |
| Reducer | DN63–DN800 | PN10–PN20 | Butt Fusion / Electrofusion |
| Flange Adapter | DN50–DN1000 | PN16–PN25 | Flange Connection |
| Elbow (45° / 90°) | DN63–DN800 | PN6–PN16 | Butt Fusion / Electrofusion |
Key application areas
1. Municipal water supply and drainage system
Urban water supply trunk pipe (replacing traditional ductile iron pipe)
Rainwater and sewage collection system
Recycled water reuse pipe network
2. Industrial field
Chemical medium transportation (acid and alkali resistance)
Mine tailings discharge (excellent wear resistance)
Food grade pipeline (compliant with FDA standards)
3. Gas transportation
Medium and low pressure gas pipeline network (PE100 RC grade anti-slow crack)
Pressure regulating station connector
4. Agricultural irrigation
Drip irrigation system branch pipe
Mobile sprinkler quick connector
Installation and quality control points
Hot melt connection process
Heating plate temperature: 200±10℃
Heat absorption time: wall thickness×10 seconds/mm
Cooling time ≥1.5 times heating time
Electrofusion welding control
Voltage fluctuation <±5%
Ambient temperature <40℃
Scrape oxide layer depth 0.1-0.2mm
Quality inspection method
Visual inspection (uniformity of weld flange)
Pressure test (1.5 times working pressure for 4h)
Ultrasonic flaw detection (important nodes)
PE100 pipe fittings Selection recommendations
Pressure level selection:
Low pressure system (≤0.6MPa): PN6
Medium pressure system (0.8-1.6MPa): PN10-PN16
High pressure system (≥2.0MPa): PN20-PN25
SDR matching principle:
SDR11: High pressure occasions
SDR17: Economical solution
SDR26: Low pressure gravity flow
PE100 pipe fittings are gradually replacing traditional pipes with their comprehensive performance advantages. With the advancement of material modification technology and the standardization of installation processes, it will show greater potential in emerging fields such as deep-sea pipelines and hydrogen energy transportation. It is recommended that users give priority to products certified by ISO 4427 when purchasing, and establish a complete welding procedure qualification (WQP) system.
