HDPE pipe ideal suitable for many different applications, including municipal, industrial, energy, geothermal, landfill and so on. HDPE pipe strength, durability, flexibility, weight of light welding after the high density polyethylene to zero leakage rate, because the welding process formed a whole HDPE system.
High-density polyethylene tubing is relatively environmentally friendly because it is non-toxic, corrosion-resistant and chemical-resistant, has long design life, and because of the flexibility, the deletion is suitable for the trench-free installation method.
Manufacture of stent should be added antioxidants, UV stabilizers and carbon black, etc. Polyethylene jacket tube easy to aging, such as open storage tarpaulin and other items appropriate to cover, dumps should stay away from high heat and fire, anti-corrosion steel pipe made after the ban exposure, sudden cold, or polyethylene jacket tube easy to crack, the impact product performance and service life.
Calculated as follows:
- OD ≤ 400mm, the upper and lower deviation, and = 0.1 × of the nominal wall thickness of +0.2
- Diameter ≥ 400mm, the upper and lower deviation = 0.15 × the sum of the nominal wall thickness of +0.2
Coating Material : Epoxy Powder, Adhesion, Polyethylene Or Polypropylene, Cement Inside
Standard: API 5L (PSL1, PSL2); GB/T 9711.1;
Grade: Gr. B, X42, X46, X52, X60, X65, X70, X80; Q235B; Gr. C;
Seam: SAW, SSAW; HSAW
Inspection: Hydraulic Testing, Eddy Current, Infrared Test;
The thired party, SGS, BV, can be accepted.
Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.
Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.
Industries: Agricultural (irrigation), chemical; dredging, fertilizers, gas distribution, general industrial, landfill reclamation, metals extraction, mining oil and gas production, power generation, pulp and paper, sewage and water distillation.
Special services: Potable water supply; hazardous wastes, duct and fire protection.
Applications: Submarine pipelines, acid lines, cold bed methane drainage, corrosive wastes, de-watering, process waterlines, drainage lines, fiber optic innerduct, fly ash disposal, relining salt water intakes and sewer lines.
Some interesting applications are further detailed.
Submarine pipelines: This application is of special interest for HDPE pipes. By virtue of its flexibility, an HDPE pipe automatically accommodates itself within its minimum radius limits to the configuration of the terrain. Submarine pipelines are used as pressure lines e.g. drinking water lines, gravity flow lines and electrical cable conduits.
A submarine installation may consist of one or more pipelines laid side by side or grouped together in one pipe bundle. Submarine pipelines are installed by one of three different methods, depending on the stretch of water to be crossed, the nature of the waterway bed and safety requirements.
Anti corrosion surface treatment process
Anti-corrosion steel pipe in the country is mainly used for petroleum, chemical, gas, heat, sewage treatment, water, bridges, steel pipes and other engineering fields.anti-corrosion steel pipe is divided into the following categories.
High Density Polyethylene (HDPE) Jacketed System
High Density Polyethylene (HDPE) Jacketed System is designed for piping systems above or below ground suitable for inside or outside applications. High quality polyurethane foam insulation combined with a durable watertight jacket supplied in 20' or 40' lengths, means an economical, high-quality system.
High density polyethylene jacket corrosion structure: the outer surface of pipe wrapped in high-density polyethylene material, with a high mechanical strength and excellent corrosion resistance, can protect the steel in the transportation, installation and use of the process to avoid external factors the damage.
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