The difference and use of HDPE pipe, double-wall corrugated pipe and winding pipeThe difference and use of HDPE pipe, double-wall corrugated pipe and winding pipe
1. The difference between HDPE double-wall corrugated pipe and winding pipe is as follows:
1. Different raw materials
HDPE double-wall corrugated pipe is made of polyethylene, and the winding pipe is made of nylon or polypropylene.
2. Different cost
The cost of double-wall corrugated pipe is low, and the price of winding pipe is slightly higher because of the steel wire.
3. Different strength
Because of the steel wire, the wound pipe is stronger than the HDPE double-wall corrugated pipe.
2. Use of HDPE double-wall corrugated pipe and winding pipe
1. HDPE double-wall corrugated pipe is made of polyethylene. The inner wall of this kind of pipe is smooth, while the outer wall is corrugated. The inner and outer walls belong to hollow pipes. The pipe has small water resistance, strong pressure resistance and acid and alkali corrosion resistance. It is easy to install and transport, and has good energy saving and water saving effects.
The inner wall of Hdpe double-wall corrugated pipe is smooth, the outer wall wave is corrugated, and the ring stiffness is generally SN4 and SN8. The construction process is easy to break and break.
2. The winding pipe is made of nylon material or polypropylene material. This kind of pipe has hollow wall winding pipe, steel belt reinforced spiral corrugated pipe, steel-plastic composite winding pipe, high density polyethylene reinforced winding pipe, etc. Adopt small diameter hollow winding tube, which is mostly used in engineering machinery or mine hydraulic equipment and wire and cable protection with high wear resistance requirements.
Because it has a product that is completely covered and needs protection, it has good wear resistance, wear resistance, aging resistance, strong corrosion resistance, and ultraviolet resistance, and has a good protection function for the rod-shaped body in vitro. The pressure resistance is far beyond the double-wall bellows. Ring stiffness can reach SN8, SN10, SN12.5, SN16 four grades.
The manufacturing processes of the two are different. The manufacturing process of HDPE double-wall corrugated pipe is simple and rigorous. It is manufactured by two-machine co-extrusion, double-layer splitting and one-time forming process. It is precisely because of the integral molding, so the structural strength of this pipe is very excellent. The inner wall is smooth, the outer wall is corrugated, and the inside is a hollow structure. It not only saves raw materials for production, but also improves the ring rigidity of the pipe.
HDPE winding pipe is composed of steel belt, adhesive resin and polyethylene. The steel belt is first derusted, then the surface is coated with adhesive resin, and finally the coating powder is melted by heating of the machine and applied to the steel belt The surface is wound into a composite steel.
As for the connection method, the steel pipe connection method is diversified. Clamps, heat shrinkable sleeves, electrothermal fusion belt connection, double-wall corrugated pipe connection are relatively simple, and the connection reliability is not as good as the steel belt pipe.