T=(0.5~0.7)*k*σs*As*d/1000
Pakati pavo,
T: inosimbisa torque, Nm
k: kusimbisa simba coefficient, kazhinji 0.12
σs: bolt zvinhu zvinoburitsa simba, Mpa
Se: ine ngozi yeMuchinjikwa-chikamu nzvimbo, mm2
d: Zita dhayamita, mm

Hebei Chengyi Engineering Materials Co., Ltd. yakazvipira kugadzirwa uye kusimudzira zvakasiyana-siyana fasteners. Zvigadzirwa zvinoshandiswa zvakanyanya musimba remagetsi, chimiro chesimbi, kuvaka, migodhi, photovoltaic, michina, zvekufambisa, njanji uye mamwe minda. Management system yekupa vatengi vane yakadzama, vane hanya uye yakavimbiswa imwe-kumira sevhisi.