Such material as cast iron has been known for a long time andwidespread in both domestic and industrial use. For home use, pans, pots and other household utensils are made of such material. In ancient times, our great-grandmothers even used heavy irons, heated with the help of coals, for ironing various types of linen. In industry, this material is also widely distributed and used for the production of heating boilers, various types of hatches and other devices for construction and production needs.
A product such as a cast iron hatch is necessary in everyday urban life. Use it in sewer, telephone and thermal city networks.
Well sewage cast-iron manholes are usedfor the closure of cavities communications with sewage. As a rule, these products are widely used in urban environments. But they can also be used for the private overlap of sewer wells, for example, in country houses or in country apartments for permanent residence. Hatches are necessary for the proper operation of the city sewer system. Durable overlappings provide security for people and transport in a megacity, tightly closing the opening. Cast iron manhole is manufactured in accordance with the rules and standards of GOST. For the manufacture of products used gray cast iron, which is a more durable material during prolonged use in a variety of climatic conditions. All hatches are divided into two types: light and heavy.
As it becomes clear from the above, these products will be widely used for a long time. Replace them yet.
There are special conditions in whichIt is recommended to use products of this type. The cast-iron hatch must be operated in strict accordance with the loads on the road bed, where it will be located. For roads with heavy traffic, it is recommended to install mainline products specifically designed for this purpose with a working load of 25 tf. Also in this case, hatches with a load of 40 tf can be used. For use on lawns or pedestrian pavements use the lightest products with a working load of 3 tf. On city roads with an average degree of congestion, you can install hatches for 15 ton. In accordance with the marking and the degree of severity, the cast-iron manhole has a different weight, and, naturally, this affects its value.
Каждая партия изделий проходит проверку на compliance with GOST standards. The control is carried out by sampling from a batch of some copies. Thus, the product is tested by measuring the ultimate load, which is carried out on a hydraulic press designed for this purpose in laboratory conditions. In case of successful verification, documents of compliance and security are issued. Each batch of products must be accompanied by a set of documentation that confirms compliance with GOST.
