The HDPE Buttfusion fittings developed and produced by SIFFO have excellent strength and wear resistance. They are specially designed for turning of pipeline systems to ensure smooth fluid delivery and reduce pressure loss. The product has excellent chemical corrosion resistance, high impact resistance and long life, and is suitable for a variety of application scenarios such as water supply and drainage, gas, chemical industry, and mining.
Product Features
The pipe cap inherits all the advantages of HDPE material, enabling it to work for a long time in various harsh environments:
Extremely strong corrosion resistance: HDPE is an inert material that resists corrosion from various acids, alkalis, salts, and chemical media, making it excellent for sewage and chemical pipelines.
Flexibility and impact resistance: It possesses excellent flexibility and an elongation at break of over 500%, allowing it to adapt to pipeline deformation caused by foundation settlement, earthquakes, etc., without cracking.
Hygienic and environmentally friendly: The material itself is non-toxic and odorless, meeting food-grade standards (such as PE100), and can be directly used in drinking water pipeline systems. Discarded pipe caps can also be recycled and melted down for remanufacturing, making it green and environmentally friendly.
Function of Pipe Caps
To achieve permanent sealing and prevent leakage
This is the most fundamental function of pipe caps. By fusing with the pipe body of the same material, it forms a completely sealed whole:
Integrated Connection: Through hot-melt welding, the pipe cap is integrated with the pipe, and the strength of the connection is even higher than that of the pipe itself, completely eliminating the interface gaps that may exist in traditional connection methods.
Adaptable to Harsh Working Conditions: This extremely strong sealing performance makes it capable of handling the sealing requirements of high-pressure, toxic, and flammable media (such as natural gas and chemicals), as well as vacuum pipelines, ensuring safety and reliability.
Injection molding of HDPE pipe fittings is a highly efficient and widely used production process. Its core involves injecting molten HDPE raw material into a mold using an injection molding machine, and after cooling and solidification, directly obtaining a complete pipe fitting.
Advantages of Injection Molded HDPE Pipe Fittings
High Structural Integrity
The fitting is molded as a single piece, without splicing or welding seams, avoiding the risk of leakage due to weak joints, resulting in superior sealing and pressure resistance.
High Production Efficiency
Automated injection molding processes enable rapid cycle production (single-piece molding cycle is typically tens of seconds to minutes), suitable for the mass production of standardized pipe fittings (such as elbows, tees, flanges, etc.).
Dimensional Accuracy and Consistency
Precision machining of the mold ensures stable pipe fitting dimensions and small tolerances, suitable for standardized piping system installation, reducing on-site adaptation issues.
Good Material Property Retention
During the melt injection molding process, HDPE molecular chains are evenly distributed, avoiding material degradation or stress concentration caused by secondary processing, maintaining excellent corrosion resistance and impact resistance.
![]()
![]()
规格 dn | 尺寸 Size(mm) | 壁厚 Thickness | |||
SPECIFICATION (dn) | L | H | SDR13.6 | SDR11 | SDR9 |
D63 | 60 | 44 | ✓ | ✓ | ✓ |
D75 | 58 | 45 | ✓ | ✓ | ✓ |
D90 | 78 | 64 | ✓ | ✓ | ✓ |
D110 | 85 | 69 | ✓ | ✓ | ✓ |
D125 | 88 | 73 | ✓ | ✓ | ✓ |
D140 | 105 | 75 | ✓ | ✓ | ✓ |
D160 | 105 | 79 | ✓ | ✓ | ✓ |
D180 | 108 | 80 | ✓ | ✓ | ✓ |
D200 | 115 | 83 | ✓ | ✓ | ✓ |
D225 | 120 | 80 | ✓ | ✓ | ✓ |
D250 | 115 | 90 | ✓ | ✓ | ✓ |
D280 | 118 | 90 | ✓ | ✓ | ✓ |
D315 | 130 | 90 | ✓ | ✓ | ✓ |
D355 | 131 | 90 | ✓ | ✓ | ✓ |
D400 | 132 | 90 | ✓ | ✓ | ✓ |
D450 | 138 | 90 | ✓ | ✓ | ✓ |
D500 | 130 | 90 | ✓ | ✓ | ✓ |
D560 | 145 | 115 | ✓ | ✓ | ✓ |
D630 | 145 | 95 | ✓ | ✓ | ✓ |
D710 | 160 | 120 | ✓ | ✓ | ✓ |
D800 | 160 | 120 | ✓ | ✓ | ✓ |
D900 | 170 | 120 | ✓ | ✓ | ✓ |
D1000 | 175 | 125 | ✓ | ✓ | ✓ |
D1200 | 190 | 140 | ✓ | ✓ | ✓ |