Grade 8.8, 9.8, 10.9, 12.9 are high strength anchor bolts for wind power. Grade 10.9 and 8.8 are the most common grades.
At present, there are roughly 3 types of fasteners used in domestic wind turbines and foundations:
- Tower bolts. High strength bolts used on the wind turbine tower are mainly GB / T 1228 ～ 1231, DIN6914 ～ 6916 and DAST.
- Bolts of wind turbine. Or foundation bolt, onshore anchor cage bolt, high strength anchor bolts used on wind turbines are mainly hexagonal head bolts such as GB / T 5782, GB / T 5783, GB / T 70.1, GB / T 6170, and GB / T 97, hexagon bolts, hexagon nuts and washers.
- Blade bolts. That is, anchor bolts connecting wind turbine blades are mainly non-standard double-headed studs and T-round nuts, blade bolts, T-nuts and morse washers, etc.
Post time: Mar-16-2021