The names PE80 and PE100 are based on the long-term strength of the corresponding material and are referred to as the minimum required strength (MRS). The minimum required strength (MRS) of the PE80 pipe is 8 MPa, while the MRS of the PE100 pipe is 10 MPa. PE100 raw material is an improved raw material than PE80, and its performance is higher than that of PE80.
PE100 has advantages over PE80 at low temperatures since it is extremely crack resistant down to -30°C. MDPE pipe is only made from PE80 material and HPPE pipe is only made from PE100 material. HDPE pipe can be made from either PE80 or PE100.
Puhui only uses high quality PE80 or PE100 raw materials from world-renowned suppliers. The raw material suppliers we usually use are: Sinopec, Borealis and so on.
Every day, more utility companies realize the advantages of trenchless technology. Due to cost savings, more trenchless projects are being installed than ever before. The savings are due to faster installation, faster licensing and saving design time, fewer commercial and residential disruptions, less park and tree damagement, and less interference with the road (and subsequent road maintenance).
Stiffness is the property of the pipe, which defines their resistance to deformation under external loads, mainly vertical loads associated with buried pipe conditions. In non-stress applications, this is a basic property to ensure the correct performance of the installation. The allowable depth of burial is calculated according to the research test. PVC products have been successfully installed at depths of 50 feet or more.
Electric fusion welding is the process of joining two plastic pipes together using a single-use coupler with integrated wire heating coils. The fused control unit supplies power to the coil, heats and melts the plastic. When cooled, a gas tight joint is formed.
When the electric heating coil is energized, the plastic material in contact therewith melts and forms an expanded pool of molten plastic that is in contact with the surface of the pipe. Continued heating causes the pipe surface to melt and then mix with the molten plastic of the fitting. This mixing is critical to producing good welds. Also, proper delivery of energy to the heating coil is critical to producing molten plastic and making the process happen.
At the end of the heating cycle, the fittings and pipes are cooled and the molten material is cured to form a strong and strong joint. During this cooling phase, the joint must remain completely stationary as movement can break the interface and cause a leak path.
In order to ensure a high quality joint, the following conditions must be met:
The heating coil needs to be as close as possible to the pipe/fitting interface.
The heat distribution is uniform over the length of the "hot zone".
Precise control of melt pressure and temperature.
Protect the heating coil from damage before soldering and during soldering.
The main difference between conventional hot melt and electrical fusion is the method of applying heat. In traditional hot melt (butt, saddle and socket) connections, heating tools are used to heat the pipe and fitting surfaces. The fused joint is heated internally or by a conductor at the joint interface or by a conductive polymer. Heat is generated when current is applied to the conductive material in the fitting. Electro-fusion joints are required for PE pipe-to-tube connections made using the electrofusion process.
Compared to many alternatives, PVC pipes are a lightweight but strong material. A length of PVC pipe will weigh one-fifth the equivalent of the equivalent size of a cast iron pipe, making it easier to install. The product is easy to assemble into a solvent welded or gasketed version, once assembled correctly, both are leak-free.
Yes, they can. Due to the long service life of PVC pipe products, there are not many pipes currently in use because they are still in use. Although current standards generally do not allow recirculating used pipes to new certified pipes. PVC pipe producers can recycle almost all production waste internally. Since PVC is a thermoplastic PVC pipe, it can be simply regrind, comminuted and returned to the extrusion process to make new pipes.
