Your Position: Home - Hardware - WHY HOT ROLLED FULLY THREAD REBARS ARE NOT CONTINUOUSLY THREADED?
Fully thread rebars are widely used for pre-stressing and post-tesnioning purposes.
The reason why it’s chosen is, despite its high mechanical properties, but also because it can fit a nut directly without screw a new thread.
As we all know, threads can be cut, cold-rolled, and cast. These hot-rolled pre-stressing rebars are cast by modules. During production, there are two modules cover the rod body, then the thread shape. So there are always a gap that haven’t been covered. So this is why the thread is not continuous on hot-rolled fully thread rebars. But don’t worry, the nuts can still fastened well enough.
Rolling Method: Hot rolled, Heat-treated
Grade: PSB500, PSB780, PSB830, PSB930, PSB1080
Standard: KSD3504, JIS3112,CAN/CSAG30.18-M92,BS4449-1998,ASTM615/706, DIN488-1
Diameter: regular 15, 20, 25, 28, 32, 36, 40, 50 mm or as customer’s demands
Length: As customer’s demands
Yield strength: 500/780/830/930/1080 MPa
Tensile strength: 630/980/1030/1080/1230 Mpa
Accessories: Full force hex nut, dome washer, bearing plate, coupler, nylon nut
Place of origin: China
Application: Mining, tunneling, construction,slope stabilization
Supply ability: 500 Tons per month
|Steel Grade||Yield Strength|
|Elongation after Fragure|
|Original Stress||Relaxation rate after 1000h r/%|
|Nominal Diameter, mm||Nominal Cross Section Area, mm²||Theoretical Weight. kg/m|
|Theoretical weight in this table is according to steel density 7.85g/cmm³.|
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