The use of new technologies is crucial in construction of pipeline systems and effluent treatment facilities in large cities. In modern construction: laying of hot and cold water supply systems, sewerage and rainwater drainage, heating systems for blocks of flats and private houses, time and quality are essential. NTT offers innovative products for the most modern methods of the utilities construction: microtunnelling, auger drilling, puncturing, etc. Pipe coupling allows to reduce the project time significantly.
The microtunnelling technology allows to lay underground pipeline systems of different diameters at depths from 2 to 80 m and with length up to 1500 m without damaging surface infrastructure and landscape along the laying route, including dense city building conditions. Steel, reinforced concrete or fiberglass pipes are used for microtunnelling.
GRP pipes are not subject to cold deformation, have high mechanical characteristics, have low ratios of linear heat expansion (2.5 × 10-5, °С-1) and heat conductivity (0.3 W/m × K), during installation do not require welding works.
For residential construction NTT offers the following range of products:
NTT "PRO". - Pipes for drinking water supply, delivered according to GOST R 54560, GOST R ISO 10467, GOST 32661, GOST 32871, GOST 33123, TU 22.21.21-003-99675234-2019.
NTT " CHEM". - pipes for sewage system, delivered according to GOST R 54560,
GOST R ISO 10467, GOST 32661, GOST R 55075, GOST 32871, GOST 33123, TU 22.21.21-004-99675234-2019.
NTT "JACKING" - jacking pipes for microtunneling, auger drilling, relining, delivered according to GOST R 54560, GOST R ISO 10467, GOST R 52748, GOST 32871, GOST 33123, TU 22. 21.21-004-99675234-2019, TU 184.108.40.206-003-99675234-2019, TU 2296-001-81652345-2013, TU 220.127.116.11-005-99675234-2017.
Also NTT supplies storage tanks, clarification filters, water disinfection filters, sewage pumping stations, septic tanks, manholes.
The diameter (DN) of NTT fiberglass pipes is defined by the internal size and measured in millimeters. The range of pipe sizes is: DN 300 - 4000 mm;
The nominal ring stiffness (SN) of the pipes is measured in N/m² and varies in the following range: SN 5000 - 1 000 000 N/m²;
For the correct selection of the pipe type, it is important to know the ring stiffness. Normally this value is at least 10000 N/m². Fiberglass pipes are available in the following pressure types: PN 0.1 - 4.0 MPa (1 - 40 atm).