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You can distinguish the method of making a channel by type of external corner.

hot-rolled (correspond to GOST 535-88);

Standards regarding the production of channels are presented in GOST 8240-97.

They are classified in accordance with the brand of the used steel, size and length.

SHELLER. Channel — one of the types of varietal metal rolling.

The length can vary as a result of temperature changes, which must be taken into account.

We apply a special lubricant to the smooth part of the pipe and push the bell.

First you need to determine the required sizes and cut the pipes.

To create a really silent sewage system, it is very important to carefully calculate everything and install it, given all…

The third method is the use of pipes with thick walls, as well as polypropylene fittings that perfectly extinguish all…