HDPE Pipes and Fittings For Marine details description:

HDPE Marine Pipe is a pipe designed specifically for the Marine environment and manufactured from High Density Polyethylene (HDPE) material. Designed to cope with the harsh environmental conditions of the ocean, including seawater corrosion, salt spray, low temperature, strong pressure, etc. The pipeline is widely used in offshore oil and gas transportation, Marine water conservancy engineering, submarine drainage system and seawater desalination.
The main features of HDPE Marine pipe include corrosion resistance, UV resistance, wear resistance, high pressure resistance, toughness, etc., it can withstand high strength seawater pressure, and has high impact resistance and long-term stability. Therefore, HDPE Marine pipes, as a substitute for traditional metal pipes, have been widely used in Marine engineering.

The material characteristics and advantages of HDPE Pipes and Fittings For Marine：

Corrosion resistance: HDPE has excellent chemical stability, can resist the erosion of various chemical substances in the Marine environment such as seawater, salt spray, acid and alkali, is not easy to rust and corrosion, and can ensure long-term stable use.
Wear resistance: with high hardness and wear resistance, it can withstand the erosion and wear of the current and sediment in the ocean, and it is not easy to wear and perforate, which is suitable for the occasions that are vulnerable to wear such as the submarine pipeline.
Good flexibility: excellent flexibility, compared with the traditional metal pipeline, it can better adapt to the terrain changes in the Marine environment, wave impact and geological movement, reduce the risk of leakage caused by pipeline deformation or fracture, for example, when laying on the unrolling terrain of the sea floor, it can bend with the terrain without too much pipe connection.
Light weight: low density, light weight, easy to transport and install. In the Marine environment, its buoyancy is good, and it can be maintained in a suitable position in the water by proper counterweight control, which is convenient for pipeline laying and maintenance.
Strong impact resistance: able to withstand a certain degree of external impact, such as ship anchoring, Marine life impact, etc., not easy to damage due to accidental external force, to ensure the integrity of the pipeline.
Good insulation performance: With good insulation performance, it can be used to protect submarine cables and other facilities that need insulation protection to prevent current leakage and interference.
Long service life: Under normal conditions of use, the service life of HDPE Pipes and Fittings For Marines can reach more than 50 years, reducing the frequency of pipeline replacement and maintenance, and reducing long-term costs.

HDPE Pipes and Fittings For Marine connection:

Hot melt connection: The hot melt machine is used to heat the connection part of the pipe and pipe fittings to a molten state, and then the two are quickly bonded, cooled and solidified under a certain pressure to form a solid connection. Suitable for the same material, nominal outer diameter ≥63mm pipe and pipe, pipe and pipe fittings connection.
Electric fusion connection: the electric fusion pipe is set on the pipe, and the resistance wire in the electric fusion pipe is electrified through the electric fusion welding machine, so that the resistance wire heats up and the contact surface of the pipe and the pipe is melted, and the body is formed after cooling. Suitable for various specifications of HDPE water pipe connection, especially suitable for nominal outer diameter < 63mm pipe or cannot use hot melt connection occasions.
Flange connection: The HDPE pipe and flange are connected together by hot melt or electric melt, and then the two flanges are connected by bolts, and the sealing gasket is installed in the middle to realize the connection and sealing of the pipeline. The flange connection is suitable for the connection of HDPE pipes with valves, flowmeters and other equipment, as well as the parts that need to be disassembled frequently, which is easy to maintain and overhaul.

Hot melt connection	Electric fusion connection

Flange connection