Formulated in the 1950’s, high density polyethylene plastic (HDPE) has subsequently been subjected to extensive and
rigorous real world application testing to an extent surpassing any “standard” test regimen usually applied to plastic materials.
HDPE pipe has proven itself around the globe as the best material choice for water, sewer, natural gas distribution, oil and gas
gathering, drainage, buried conduit and now even safety systems for nuclear power plants. Few materials have as wide an application
base due to its resistance to a wide variety of chemicals, environmental conditions and its suitability for both low and
high pressure applications.
HDPE fittings are injection or compression molded, fabricated using sections of pipe or machined from molded plates.
Injection molding is used to produce fittings up through 12-inches in diameter while fittings larger than 12-inches are normally fabricated.
SECOR has been fabricating fully pressure-rated full bore fittings for over 20 years. Depending upon the configuration required,
fittings are constructed by joining sections of pipe, machined blocks, molded fittings and/or HDPE sheets.
Each fitting design is thoroughly analyzed prior to construction in an effort to locate any areas that may compromise
the pressure rating of the system into which and fitting will be installed.
SECOR custom fittings are fabricated according to ASTM F2206-02 Standard Specifications for Fabricated Fittings of Butt-Fused
Polyethylene (PE) Plastic Pipe, Fittings, Sheet Stock, Plate Stock or Block Stock. This specification includes
requirements for materials, design, workmanship, minimum dimensions, marking, test methods and quality control.
In addition, the following specifications are continually referenced by SECOR engineers.
- ASTM issued standard D3350, "Standard Specification for Polyethylene Plastic Pipe and Fittings Materials"
- ASTM D2683, "Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Fittings"
- ASTM D3261, "Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene Plastic Pipe and Tubing"
- ASTM F1055, "Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing"
- ASTM D2657, "Standard Practice for Heat Fusion Joining of Polyolefin Pipe and Fittings"
Also referenced are the Generic fusion procedures for PE pipe products have also been published by the Plastic Pipe Institute (PPI). They include,
- TR-33 "Generic Butt Fusion Joining Procedure for Polyethylene Gas Pipe"
- TR-41 "Generic Saddle Fusion Joining Procedure for Polyethylene Gas Pipe"
SECOR provides the following HDPE components including:
- Fabricated Fittings
- Molded Fittings
- Molded and Fabricated Fittings
- Pipe Bends
- Transition Fittings
- DI Adapters and Rings
- Custom Concentric and Eccentric Reducers
- Custom Drip Tanks
- Custom Spool Pieces
- Pig Bar Tees
- Pig Bar Reducing Tees
