Double Lock Post Tensioning Duct Machine Corrugated Tube Machine

Post Tensioning Duct Machine, Corrugated Tube Machine

Spiral Tube-former for Production Post-Tensioning Duct or Corrugated Tube

Our Spiral Corrugated Post-Tensioning Tube Making Machine is special for production round corrugated ducts adopted in expressway, bridge, train and large-span post-tension concrete projects. The prestressed Protection Tube production Machine is suitable for both indoor and site work because of its light weight and small sizes. With its special corrugations, a very high radial stiffness well adapted for use as former in concrete structures. Corrugated tube is also being used as culverts and forms for concrete projects, plinths and columns. On many construction projects like apartment buildings, parking garages, office buildings, industrial buildings, bridges and docks, schools and hospitals, the introduction of the prestressed protection tubes will make it possible to use very long spans. The reduction in weight allows large areas and fewer columns which in turn will give technical economical and esthetic advantage.

Our high engineer designed this machine and special for exporting post tension ducts, this kind PT ducts is same as the ducts manufactured by SPIRO tube-former’s, with 78mm width raw material, only our machine will be smaller. The present Post tensioning ducts adopted in Chinese market, its character is different with this style ducts, will be more flexible, and can not be used in certain countries because of the different post tensioning ducts standard.

Spiral round Corrugated Post-tensioning tube-former main dates

Further details about flat post tensioning ducts, Pls contact with us!

POST TESIONING Duct INDUSTRY Brief introduction

Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons.

These internal forces are applied by tensioning high-strength steel, which can be done either before or after the concrete is placed. ... Post-tensioning is done onsite by installing post-tensioning tendons within the concrete form-work in a manner similar to installing rebar.

Several advantages are there for post-tensioned slabs. As post tensioning reduces or nearly eliminates shrinkage cracking, hence fewer or no joints are required. Cracks developed are tightly held together by means of tensioned tendons. The postensioned slabs are suitable for the expansive soil conditions.

Advantages of Prestressed Concrete:

Prestressed concrete members are free from cracks and the resistance to the effect of impact, shock, and stresses are higher than rcc structures. Longevity of prestressed structure is greater than rcc structure because the reinforcement stays unaffected from outer agencies.