ООО "Уфимский Завод Металлорукавов"
450015, Russia, Ufa, K.Marx str. 67
ул. Ленина 49
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The metal RGM hoses produced by the UZM

The flexible metal hose consists of a pressure-tight, corrugated metal hose and an outer stainless steel braid, which is used for pressure stabilisation and absorption of the reaction forces, having connecting fittings for welding at the ends.

Hoses can be welded with fittings for detachable connection at the ends.

It is a hermetic cover with annular parallel corrugations. It is made by the method of hydroforming from tube, which is welded by argon-arc welding along the length of the pipe.
Ø6 - Ø400
Corrugating of Increased flexibility
Ø6 - Ø200
Heavy series
Ø6 - Ø200
Ø6 - Ø200
Two-layer corrugating
Ø6 - Ø125
Standard Ø6-Ø400- is made of 0.3 to 0.4 mm thickness tube and has an average flexibility. Metal hoses of this corrugation withstand a working pressure up to 240 kgf / cm2 depending on the inner diameter and the number of braids. This type of corrugating fits most of the customer requirements.
Corrugating of Increased flexibility Ø6-Ø200 – is made by squeezing annular corrugations, which allows to increase the flexibility of the metal hose, in installation of hard-to- reach areas.
Heavy series Ø6-Ø200 – have increased thickness of the corrugations, which allows using the flexible metal hose with the maximum working pressure (up to 400 kgf / cm2).
Spiral Ø6-Ø200 type of cover allows to increase the flexibility of the metal hose, as well as allows to transport medium with the maximum speed. Spiral corrugating increases the hose life.
Two-layer corrugating Ø6 - Ø125 – is designed for operation in particularly important production sites, for example, transportation of radioactive media. Two-layer corrugating provides increased tightness of the flexible part.
It is a mesh type protective cover made of stainless steel 321 wire, which allows to ensure the performance of the hose under the influence of various loads, as well as the pulsation of pressures arising during transportation on the flexible element of the working environment. Braiding should fit tightly to the hose, do not have any ragged parts.
Single-layer braiding
Two-layer braiding
Three-layer braiding
Single-layer braiding - is the standard type to ensure stable operation of the hose under heavy loads.
Two-layer braiding - allows to increase the working pressure, usually used in conjunction with a heavy RGM (pressure - tight metal hoses) series.
Three-layer braiding – allows to use the maximum working pressure, is applied when preparing special customers’ conditions.
Internal screen
It is a protective element of the hose, placed inside the flexible part to eliminate / reduce contact of corrugating with the medium, or due to its presence to extend the service life of the product.
Tube type
Tube type - is a pipe, fixed from one end to the inner collar of the metal hose, used in the transportation of high temperature environment (e.g. exhaust gases), to prevent the bellows burning out. It is applied on products of small length, as this type of internal screen does not allow a hose to work while it’s bent.
Rolled-non-hermetic stainless steel cover, formed by profiling and rolling in a spiral, used as an internal screen to strengthen the structure, dissipate the temperature of the working environment to prevent damage to the main bellows.
Braided - is a steel mesh braiding, placed inside the bellows to disperse the temperature of the medium to prevent the damage of the main bellows.
PTFE - tube is used to prevent contact of highly corrosive environment with the bellows material, end fittings; as a rule, it is used in chemical industry, in working with acids, chemical compounds or highly adhesive environment.
Outer cover
Is a part of the hose in which the flexible part is enclosed to prevent various effects (thermal, mechanical, etc.). It is selected based on the expected operating conditions of the product.
Thermal cover
Thermal hose
Rubber cover
Thermal cover – is used to protect hose from exposure to high temperatures up to 1500°C.
Thermal hose – is used to protect personnel working in close proximity to the metal hose, from burns or frostbite, while transporting media of low or high temperatures.
Rubber cover - allows to protect the metal hose braid from any mechanical damage.
Spring - provides protection of the flexible part of the metal hose from fractures. As a rule, it protects the place of end fittings from bending, sometimes it is installed along the entire length of the metal hose.
The metal hose of the RGM (pressure-tight metal hoses) series has the marking placed directly on the end fittings of the metal hose or located on labels, metal tags attached directly to a metal hose.

RGM 50-40-1, 0 c/a


RGM - product's series (pressure-tight metal hoses);

50-nominal inner diameter of the hose in mm;

40 - the highest operating pressure of the hose in kgf / cm2 (atm.) under normal operating conditions;

1.0-nominal length of the hose assembled, m;;

c/a – availability of special end fittings in accordance with Customer requirements. A full description of the end fittings is presented in the Customer's technical passport. Hose marked without abbreviation c/a – means that hose is without valve, suitable for welding.