Standard

Slip Resistance

Damage Resistance

Deformation

Stretching Resistance

Chinese standard

GB15831

P1=7.0KN  D1≤7.00mm

P2=10.0KN D2≤0.5mm

No crack at P=25.0kN

f≤70.00mm at torque=900N.m

D1≤2.00mm at P=4 kN

Ji brand standard

QB2010.1

P1=10.0KN D1≤7.00mm

P2=12.0KN D2≤0.5mm

No crack at P=30.0kN

f≤60.00mm at torque=900N.m

D1≤2.00mm at P=5kN

Quality

Up to or above the standards of Chinese GB15831/ EN74-1/BS1139.2-1/ AS15762 and ISO4054