The term " HDPE pipe " and welding technology

welding technology

Thanks to modern technology and the progress we are able to use only the best materials and equipment in virtually every area of ​​our operations, including in the field of water supply.We all remember how the water quite a long time carried out by a metal pipe.Then they were replaced by plastic and metal pipe, which in a relatively short period of time to displace a significant portion of the metal and cast iron counterparts from the market.However, the use of plastic products is not always convenient, so the market there is another option - HDPE pipe, which became fairly quickly in water demand.

HDPE pipe - it is of high-density polyethylene, bright qualities which are:

• light weight;
• no interactions with water, so the taste of metal was in the past;
• not corrode, which eliminates the need to isolate the pipe in case of underground installation;
• durability, the pipe is not damaged by freezing water;
• ease of assembly of the pipeline;
• low cost.

welding technology consists in heating the tube edges to a temperature at which the polyethylene becomes viscous and then heated edge joined and kept under pressure until it cools down.

butt welding is carried out in several stages:

1. Mounting and fixing pipes in the centralizer apparatus for welding;
2. Crosscutting by setting the planer on the centering between the ends of the pipes;
3. match ends Visual inspection as well as inspection of the gap between them.
4. heating and melting ends.
5. Connection ends under pressure and further cooling.

During the butt welding of the ends is particularly important to control the heating temperature, heating time and pressure during their connection.

Rules for butt welding

butt welding HDPE pipe should be conducted only on flat and hard surfaces (board, asphalt, etc.).It is necessary to ensure the alignment of the welded pipe (axes difference should not exceed 10% of the wall thickness).Weldable ends must be closed with plugs to avoid drafts and ensure a constant temperature splicing.

Before any operation necessary to wipe lint-free cloth ends, as well as clamps centralizer.Pipes must be positioned so that they would be in the marking of one line.It is also necessary to remove dust and microparticles with a variety of heating by the probe interface.For pipe, the diameter of which exceeds 180 mm, it is necessary to perform two pilot joint.

Be sure to clean the grinder wheel before grinding.After a final check of the alignment, you can proceed directly to the process of butt welding.

average price for the services of welding HDPE pipe

Price pipes welding services directly to the customer site is usually dependent on their diameter, type of welding, the number of joints