- BrandАлмаЗИТ, ТОО
- Country of manufactureKazakhstan
The ALMAZIT company makes the steel pipes which are previously isolated industrially in polyurethane foam (PPU) thermal insulation on the "pipe in a pipe" technology for requirements of the state standard specification 30732-2006 standard "Pipes and shaped products steel with thermal isolation from polyurethane foam with a protective cover", intended for use in systems of pipelines where the greatest possible degree of protection of the substance which is pumped over on the pipeline against influences of external environment and preservation in system of heat or cold in cases when working temperature in a pipe does not exceed the constant level of 140 degrees With is required (a temperature threshold of application as heat-insulating material of polyurethane foam polyfoam).
Diameters of the made PPU of pipelines make 32 - 1020 mm. For underground beskanalny laying pipes PPU in a polyethylene protective cover (PE) are made. For control of a condition of steel part of the pipeline and characteristics of a heat-insulation layer of PPU of a pipe of this technology are made with conductors of system of the quick and remote control (QRC).
For the accounting of laying of pipes in zones with a frigid climate state standard specification 30732-2006 provides production standard (1 type) and strengthened (the 2nd type) option of PPU of thermal insulation of the steel pipeline.
The uninsulated ends of steel pipes in the course of drawing thermal isolation make 150 mm to pipe PPU 219/315 of mm and 210 mm for pipelines of big diameters.
The steel pipes isolated, applied to pipes of beskanalny laying in PPU of isolation of thermal networks are used according to requirements of "Rules for the Construction and Safe Operation of Steam and Hot Water Pipelines" in accordance with GOST: 550 (group A), 8731, 8733 (group B), 10705 (group B), 20295 brands of steel 10, 20, 15 GS, 10 GS, 09G2S, 16 GS, 17 GS, 17G1S, 17G1SU. Length of steel pipes to diameter of 219 mm has to make 8 - 12 meters, from diameter of 273 mm it is allowed to apply PPU isolation on pipes 10 - 12 meters long.