1.
Double layer axial hollow tube The development of double-layer axial hollow pipe adopts computer-aided design to optimize the section structure of PVC axial hollow wall pipe. When the amount of raw materials is the lowest, the performance of the pipe meets the use requirements. With the same ring stiffness, the optimized hollow wall pipe saves more than 20% of raw materials than the solid wall pipe. Socket interface, rubber ring seal.
2.
Spiral ribbed tube For the new generation of plastic pipes, the inner wall of the pipe is smooth and flat, and the reinforcing ribs on the outer wall form a spiral shape. The pipe making is carried out in two stages. The pipe forming is made of pre extruded plate and strip with equidistant T-shaped ribs through spiral winding. The pipe diameter can be adjusted arbitrarily, the length can be adjusted arbitrarily, and the pipe interface is bonded with a special pipe joint, which is cheap, But the stiffness is not as good as double wall bellows and annular ribbed pipe.
3.
Flat wall tube Flat wall pipe is a homogeneous pipe with smooth inner and outer walls, and the pipe wall section is solid. The pipe interface has soft interface and rubber ring interface. The rubber ring interface has good tightness. Cecs122-01, technical specification for buried UPVC drainage pipeline engineering, stipulates that this kind of pipe is only allowed to be used for pressureless drainage pipeline of gravity flow, For drainage pipes with internal pressure, PVC-U flat wall pipes that can withstand internal pressure shall be used. The price of flat wall pipe used for drainage pipe is relatively high compared with special-shaped pipe.
4.
Annular ribbed tube The utility model relates to a pipe with smooth and flat inside and annular reinforcing ribs on the outer wall. This kind of pipe not only reduces the thickness of pipe wall, but also increases the stiffness of pipe, improves the ability of pipe to bear external load, and can save more than 30% of materials than ordinary straight wall pipe. Socket interface, rubber ring seal.
5. Double wall bellows
The pipe wall section is a double-layer structure, the inner wall is smooth and flat, and the outer wall is trapezoidal or arc corrugated rib. Because the hollow section of the pipe wall is hollow core, it saves more than 20% of the material than the flat wall pipe under the same bearing capacity. Socket interface, rubber ring seal. This kind of pipe has the advantages of low price and convenient construction and installation.
