Post-tension Bar Specification
|PT Bar Tension Bar specification|
|Diameters||M64 M56 M48 M42 M39 M36, customers’ technical requirements|
|Property Class:||8.8 9.8 10.9 12.9|
|Accessories:||Nut, plain washer, dome/spherical nut, dome/spherical washer, coupler|
|Thread:||cut thread, rolled thread|
|Thread length:||Acc. to customers’ technical requirements|
|Thread tolerance:||ISO 965-1, 6g|
|Rod standard:||ISO 898|
|NDT inspection:||100% magnetic partical test, 100% ultrasonic test|
|Inspection document:||EN 10204 type 3.1, type 3.2|
PT Bar Description:
PT Bar for Bridge Structure
Longteng supplies post-tensioning system (PT Bar) that can be used for bridge-building and pre-tension purpose in concrete structure, for our main product is high strength PT bar for all kinds of applications, tensile strength grade range is 8.8-12.9. There are many types of pre-tensioning systems which can be classified into 3 – wire tendon, strands tendon and bar tendon.
Longteng concentrates on manufacturing post-tensioning system with bars and rods tendon, with other required accessories for heavy structure post-tensioning. As the most used post-tension system in bridge construction, strand tendon is used for permanent post-tensioning, bar tendon is used for both permanent and temporary conditions. For permanent applications, pt bar shall be produced with anti-corrosion treatment.
Post-tension Bar Products and Fabrication Service
Heat-treated high-strength PT bar for post-tensioning system is usually produced with full threads, which is also known as full thread bar, threading method has 2 options: cut thread and rolled thread. Longteng also supplies round bar with no thread, or we can fabricate according to customers’ requirement such as double end thread, etc. Usually, PT bar system is designed for grouted construction. In addition, they are sometimes used as external tendons with various types of corrosion protection.
What is Post Tensioning System
Post-tensioning is a method used to increase the tensile strength of reinforcing concrete structure, so that the tensile stress created by load force will be neutralized with the tension. Post-tensioning operation process: put high-strength pt bar in ducts or sleeves, place them in concrete structure to apply tension by pulling the pt bar and fix it with anchor plate against concrete edge, this process is done before concrete structure bears service load. In one word, it includes installing and stressing pt bar tendon, to make the reinforcing concrete attain a minimum compressive strength.
Why Choose Longtong PT Bar
PT bars manufactured by Longteng are manufactured with strict tensile standard, usually above the standard level, so it can be reused without damage when being re-tensioned properly. Full thread bar can be cut to any length to be reconnected, Longteng can help customers with a series of fabrication work if needed.
Longteng post-tensioning (PT bar) adopts hot rolled round bar with continuous thread, with the tensile strength levels of 8.8, 9.8, 10.9, 12.9, or even higher, diameter range of M39 M36, M39, M42, M48, M56 and M64. PT bar length can be customized according to the usage. If you want more info about pt bar manufactured by Longteng, contact us now.
Post-tensioning Bar Application:
Post-tensioning bar system is used in many fields for pre-stressing purpose, it is a supplement to the wire tendon for higher tensile property in post-tension bridge building, and it is used in manufacturing high strength anchor bolt for wind turbine foundation and tension bar(tie rod) for building structure of walls and roof, with customized thread on it. Ground anchors, rock bolts for mining, tunneling, roof supporting, structural tie rod, Tanks, Stadium, Nuclear containment vessels, art structures.