Surfaces must be cleaned before welding. Aged layer on the surface is very thin, but it prevents the formation of tight connection with the pipe coupling. The marker denotes the length over which the pipe enters the sleeve and after the removal of contaminants from the surface of the tube is held trimming the top layer. Welding by a dense mix heated to 250-270 degrees C coupling and the pipe.

Manufacturers offer a variety of diameters of polypropylene pipes. Choosing fittings, it should be the diameter of the pipe. For welding of polypropylene pipes of large diameter pipes polypropylene plant should be carried out using special equipment that ensures alignment of pipes and fittings.
For joining pipes of different diameters, pipe joints in areas of branching or turning used fittings.
Fitting

Fittings that have a role to connect pipes of different diameter, are straight and angular. Usually, the production of fittings provides every company engaged in the manufacture of pipes.

fitting

Direct designed for taper pipe of larger diameter pipe to a smaller diameter. Carbon pipe fittings to rotate at a certain angle standard. Manufacturers produce standard corner fittings 30, 45 and 90 degrees. In addition to the same pipe connections, using special connectors that connect the pipes with different properties. For example, to connect with a polypropylene composition pipe uses a special fitting that provides secure attachment of the two tubes.

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In practice, the connection of different pipes is carried out through a threaded adapter to which are attached fittings, connected with pipes. Version, which uses the same pipes and fittings is considered ideal. In the section “polypropylene fittings,” contains information about the different types of fittings and their characteristics. To make a secure installation of fittings should be to choose the correct diameter pipe and fitting. This is especially significant demand for plastic fittings, connected to the pipe welding.
Connection fittings

Check diameter of pipe fittings and discard irrelevant can be examples of the fitting to the heating element welding machine. If the dress is too loose, you must be discarded. Refer to “Metal Fittings”, you will receive detailed information about the press metal fittings, which have the reliability and durability. Compounds such fittings do not have to tighten up, they can withstand high pressure in the pipeline system can be installed quickly.

Another type of compound plastic pipes are compression (screw) fitting. This type of connection – collapsible. With it, provide a quick connection of pipes in the system. Available in direct coupling to continue without changing the direction of the pipeline, coal – for a turn to the standard angle and tees or crosses, allowing the tube to take the main highway.

Polyethylene fittings section explains how to select the butt welding fittings, where applicable, electric fittings, and any destination in compression.