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Main PRODUCTION Tie plates

Tie plates

As per GOST 6482-2011 regulating the requirements for reinforced concrete non-pressure pipes, all reinforced concrete pipes used in sewers with aggressive fluids (when exposed to organic substances, acids, oil products) must have an internal protective coating. This coating must be in the form of a polymeric housing with a thickness of at least 3 mm. To securely fasten the protective sheet to the pipe, this housing must have staggered point tie members. The height of the tie members ranges from 10 to 15 mm, their number is as least 300 and maximum 500 per 1 square metre. Tie plates meet all these requirements.



Tie plates used to protect concrete and reinforced concrete against the environment are made of high density polyethylene HDPE. This material is characterised by its durability. On the surface of the concrete product, the plate is fixed with special V-studs staggered to increase the connection reliability. Thus, the entire structure becomes especially resistant to destructive environmental factors.

This shape of tie members is achieved even during sheet extrusion using a vacuum shaft. This ensures the integrity and continuity of the connecting elements with a common design. The tie system is calculated and designed with special care for the finished structure to achieve maximum strength. Due to the density of tie members (420 members per 1 sq. metre) the internal stress of the material is evenly distributed, concrete bonds are reliable, and the structure itself retains its properties in the extreme environmental conditions commonly experienced in modern Russia.

Анкерные листы



Tie plates can be mounted both at the initial stages of construction and during maintenance and modernisation of existing facilities. First, the plate dimensions and configuration are fitted to the product, and then the blanks are connected by manual extrusion welding.

Moreover, during mounting, additional strength is ensured by a special technology: there is a gap between the tie plate fasteners and the product surface, which is filled with concrete. When the concrete hardens and gains its strength, the mounting is completed.

03 — advantages


к resistance

(organic matter, acids, alkalis, caustic substances). Reinforced concrete structures additionally reinforced with tie plates retain all the strength characteristics of concrete, while increasing their ability to withstand environmental impacts: temperature extremes, high humidity, water, etc.


Even when subjected to aggressive wear and active use the service life of a reinforced concrete product is not compromised. A pipe reinforced with tie plates can operate for at least 50 years. A reinforced concrete product will withstand this period even under destructive factors.


Tie plates both strengthen the reinforced concrete structure and completely isolate the material from water, providing absolute waterproofing. Thus, the corrosion resistance is greatly increased while the plates improve the pipe hydraulics.

from maintenance

After mounting, the tie plates and the entire structure do not require maintenance by a team of specialists. Subsequent operation will not require extra financial commitments.

High quality

Plates are mounted by extrusion welding. It is an effective, accurate and cost-neutral method. This method of joining plates ensures the complete tightness of the reinforced concrete structure. The estimated strength of the resulting seam is 98%.

at any plant

Products reinforced (lined) with tie plates can be manufactured at any plant of reinforced concrete structures. You can choose a company closest to the mounting site and cut down on transportation costs.

Simple technology

The technology is simple: a plate is bent into a sleeve with tie members staggered on the outer surface. Then the sleeve is put on the core followed by standard vibrocompression operations.

Low cost

Production costs are reduced even with the re-equipment of product lines, as the revamping cost is minimum.

Easy mounting procedure

Для монтажа не нужны сложные агрегаты и инструменты, все операции стандартны, для установки футеровочных колец в железобетонные колодцы потребуется лишь ручной экструдер для сварки швов.


The reliability of pipes is extremely important when installing monolithic sewage pumping stations. The necessary reliability is ensured by tie plates. They are unrivalled in this. When implementing large-scale projects and work of high complexity, lined products will save much more than their fibreglass counterparts.

Rigid connections

This technology enables the embedded elements to be fastened first and mounting the rest of the equipment later. Embedded elements and equipment are mounted without glue, unlike for fibreglass, but by extrusion welding to increase the connection strength.


Maintenance: relining and restoration

Often, the inner layer of reinforced concrete products requires restoration even in cases where there is severe decay of the entire system. Mounting tie plates allows the restoration of the pipe even if part of the crown sheet is missing. Lining stops the destruction process, eliminates corrosion caused by wear, and the reinforced concrete structure restores its former resistance to loads thanks to a powerful reinforcing frame.

Relining includes the repair and restoration of reinforced concrete wells to protect against corrosion and harmful environmental conditions. It is also performed using tie plates. The header diameter after mounting will decrease for 10-15 cm only, which is insignificant for the well throughput. Compared to other technologies, this is the best option. Relining with tie plates does not depend on the shape and size of the header. Manufacturers of relining materials and equipment are mostly located in Russia. This fact is important at the beginning of construction. No expensive and specific or complex special equipment is required. Only a manual extruder is required for welding. Excavation at work sites is also not required. Relining technology with tie plates enables a rapid, efficient and inexpensive update to an engineering system even in an advanced state of disrepair. In addition, you can save on the scheduled maintenance of the well. It will no longer be necessary. The company’s expenses for lining and relining will pay off over the following decade.

The well material is unimportant for relining; both concrete and brick headers of varying deterioration degree are suitable. Often relining with these materials is the only viable method if the structure cannot be completely replaced.