Zhengzhou HDPE steel strip spiral bellows manufacture

  Advantages of steel belt reinforced spiral bellows 1
High ring stiffness
For the ordinary plastic wall wound pipe for buried drainage, its Zui large ring stiffness is difficult to exceed Sn 8, but the pipe with new structure can easily reach SN8 and sn12 5 and sn16, or even higher
On the other hand, the steel plastic composite pipe with steel pipe as the intermediate layer and polyethylene plastic as the inner and outer layer also has very good anti-corrosion performance
Therefore, the composite anti-corrosion pipe can be applied to various harsh environments
For example, in some coastal areas, due to the corrosive substances in the soil, if concrete pipes are used, the service life will be very short
It is hoped that corrosion-resistant plastic buried drainage pipes can be used
However, in the past, because the products without high ring stiffness could not meet the design requirements, metal reinforced winding structure wall pipe can be used now

2
Save material cost
In addition to these performance improvements, another significant advantage is to save material costs
Compared with other plastic pipes with the same diameter and ring stiffness, steel belt reinforced polyethylene (PE) spiral bellows can save nearly half of the material consumption,
Polyethylene accounts for only 2 / 3 of the overall weight of the composite pipe; In the situation of rising plastic prices, this is a very good solution to reduce material costs
The ring stiffness achieved after the thin steel strip is pressed into a steel rib is much higher than that produced by a very thick polyethylene structural layer
By properly designing the thickness and height of the steel rib, the required ring stiffness can be easily achieved
In the metal reinforced winding structure wall pipe, the function of polyethylene is corrosion resistance and wear resistance
Therefore, in the metal reinforced winding structure wall pipe, there is not much material for steel rib and polyethylene

3
Perfect combination of steel and plastic
The key to the success or failure of metal reinforcement is to ensure the firm bonding of steel and plastic
This requires that the steel can be firmly bonded to the plastic, and the separation between any two layers is not allowed
In order to obtain Zui good bonding performance, we have done a lot of research and tests in the process of pipeline development
The current process is to precoat special resin outside the steel strip as the intermediate layer between steel and plastic
In addition, the temperature Zui and cooling time of the steel layer should be strictly controlled under the appropriate pressure
Another key point of metal reinforcement is to protect the metal layer that is easy to be corroded
In the structural design of the pipe, the steel rib is completely covered by inner and outer polyethylene
The inner and outer surfaces contacting the transported liquid and the surrounding soil and groundwater are polyethylene layers with a certain thickness
Therefore, the corrosion resistance and wear resistance of metal reinforced winding wall pipe are guaranteed