Technological breakthrough of PE4710 material
PE4710 represents a major advancement in polyethylene material technology. Its name is derived from the ASTM D3350 standard classification:
“PE”: High-density polyethylene (HDPE) material
“47”: Minimum hydrostatic strength of 4700psi (about 32.4MPa)
“10”: Material grade code, indicating the best long-term performance
Compared with traditional PE3408 material, PE4710 has three core advantages:
Strength increased by 40%: SCG resistance exceeds 5000 hours
Pressure resistance level increased: Working pressure can reach more than 2.0MPa
Temperature adaptability: Maintain stable performance in -40℃ to 60℃ environment
Analysis of key performance parameters
| Performance Index | Test Standard | Typical Value |
| Density | ASTM D792 | 0.947 g/cm³ |
| Melt Flow Index | ASTM D1238 | 0.15 g/10min |
| Tensile Strength | ASTM D638 | 28 MPa |
| Elastic Modulus | ASTM D638 | 1100 MPa |
| Notched Impact Strength | ASTM D256 | 25 kJ/m² |
Particularly noteworthy is its chemical corrosion resistance: it can tolerate acid and alkali media in the pH range of 2-12, and has excellent resistance to corrosive substances such as chlorides and sulfides.
Pipe fitting types and structural design
The PE4710 pipe fittings system includes the following main types:
1. Socket fittings
45°/90° elbows
Tee/cross branches
Reducing joints
End caps
2. Electric fusion fittings
Design with integrated heating coil
Intelligent temperature sensing port
Automatic compensation function for welding time
3. Flange connectors
Full-face flange (FF)
Raised-face flange (RF)
Neck-welded flange (WN)
Structural innovation: The latest streamlined inner cavity design can reduce head loss by 15%, and the corrugated outer wall structure increases the ring stiffness by 30%.
Industry application practice
Municipal water supply and drainage system
Replaces traditional cast iron pipes with a service life of up to 100 years
Performs well in DN300-DN1200 large-diameter pipe networks
Gas transmission
API RP 15S-2019 certified
Combustible gas permeability <0.1g·mm/(m²·d)
Industrial pipelines
Mine tailings transportation (wear resistance grade ≥ L grade)
Chemical media transmission (acid and alkali resistance grade A)
Marine engineering
Seawater desalination system
Subsea pipeline repair kit
PE4710 pipe fittings Key points of installation technical specifications
Hot-melt connection process
Preheating temperature 210±5℃
Absorption time = wall thickness (mm) × 10 seconds
Cooling time ≥ 1.5 times absorption time
Pressure test standard
Hydrostatic pressure test: 1.5 times working pressure for 4 hours
Air tightness test: 0.6MPa nitrogen test
Quality control and certification system
Three-level testing system
Raw materials: infrared spectrum analysis of each batch
Production process: hourly size sampling
Finished product: 100% pressure test
International certification
NSF/ANSI 61 drinking water certification
ISO 4437 gas standard
EN 12201 European standard certification
Selection suggestions
Design parameter matching
SDR value selection (SDR11 is recommended for high pressure occasions)
Consider thermal expansion coefficient (0.2mm/m·℃)
Supplier evaluation
Check PPI (Plastic Pipe Association) certification
Require 10 years of quality assurance
Review welding process qualification report (PQR)
With the transformation and upgrading of urban underground pipelines, PE4710 pipe Fittings are gradually becoming the preferred solution for modern pipeline engineering. Their excellent performance-price ratio and design life of up to 100 years are redefining the value standard of pipeline infrastructure.
