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Hot-rolled Fully Screw Thread Bar Rock Bolt

[ Time:2019-04-10 Click:1001 ]


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

Brand Name: LT

Application: Mining, tunneling, construction,slope stabilization

Supply ability: 500 Tons per month

 

 

Steel Grade Yield Strength
MPa
Tensile Strength
MPa
Elongation after Fragure
A%
uniform Elongation
Agt%
Stress Relaxation
Original Stress Relaxation rate after 1000h r/%
PSB500 ≥500 ≥630 ≥10 ≥2.5 -- ≤3
PSB780 ≥780 ≥980 ≥7 ≥3.5 0.8R ≤3
PSB830 ≥830 ≥1030 ≥6 ≥3.5 0.8R ≤3
PSB930 ≥930 ≥1080 ≥6 ≥3.5 0.8R ≤3
PSB1080 ≥1080 ≥1230 ≥6 -- 0.8R ≤3

 

Nominal Diameter, mm Nominal Cross Section Area, mm² Theoretical Weight. kg/m
6(6.5) 28.27(33.18) 0.222(0.260)
18 254.5 2
20 314.2 2.47
22 380.1 2.98
25 490.9 3.85
28 615.8 4.83
32 804.2 6.31
36 1018 7.99
40 1257 9.87
50 1964 15.42
Theoretical weight in this table is according to steel density 7.85g/cmm³.

 

 

infor@aylttg.com for a free quote

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