Until recently, technical progress has not touched on the material for the device of the main component of water supply networks – pipes. More than 100 years ago, ceramic pipes of the first pre -Christian water and sewer systems were replaced by steel and cast -iron pipes. A few decades ago, plastic pipes were introduced in the design of the unpaled systems. It can be assumed that now we are on the verge of a new revolutionary coup in a water supply and sewage. The German branch of the International concern of Amitech Germanyy began to produce new generation of Flowtite, made of reinforced fiberglass of polyester resin.
Until now, fiberglass has been the privilege of space. Gradually, they began to be used on Earth for individual responsible details, from which special mechanical properties were required, for example, in sports poles for jumping in height.
The development of technologies of synthetic materials has led to the rapid spread of fiberglass, and now, it seems, the time has come for construction with its large volumes. Due to the lightness, strength and resistance to common aggressive influences, fiberglass pipes can be used in all cases of the use of pressure and non -pressure analogues of steel, cast iron, reinforced concrete and ceramics.
Flowtite pipes with an internal diameter of 100 to 2400 mm are released according to continuous technology with cutting for a standard length of 3, 6 and 12 m. The mixture for their manufacture includes polyester resin, fiberglass and pure non -winging quartz sand. All these materials are stable against aggressive influences, in t. h. biogenic sulfuric acid. The walls of the pipes are reinforced unevenly, with condensation in the regional zones. Particular attention is paid to the reliability of the sealing of a continuous reinforcing fiberglass.
An additional layer of resin with sand filler is arranged in the wall of the pipe for non -pressure sewer under the inner protective layer.
In sewer pipes Flowtite stiffness class 5000 with a diameter of 100, 300, 1000 and 2000 mm wall thickness is 2.9, respectively; 5.5; 16.5 and 32.7 mm. For the highest grade of stiffness of 10,000, the thickness of the walls increases slightly, for example, with a diameter of 300 mm – up to 6.9 mm.
In the production of Flowtite pipes, a technology was first used, in which the product is formed not on a hard steel core – a drum, but on a core in the form of a cylindrical steel spiral. All layers, auxiliary materials and fiberglass are applied to an inductively heated, rotating and progressively moving core in accordance with the commands of the computer control device.
Fiberglass roaring is at right angles to the axis of the pipe and core, and the spiral shape of their winding is achieved due to the progressive movement of the core. In addition to the winding fiberglass, short fibers are also supplied to the structural layers, t. e. Organized ring reinforcement is supplemented by dispersed reinforcement of the inner layers.
The technology of the production of pipes allows, along with the products of standard sizes, to produce special pipes specified by the customer of the diameter and non -standard length, as well as adjust the strength and deformity of pipes within a fairly wide range.
Flowtite is divided into 5 grades in stiffness – from 650 to 10,000 N //// m. Small weight allows you to widely use long 6-meter pipes that can be easily tolerated and manually mounted.