T=(0.5~0.7)*k*σs*As*d/1000
Ntawm lawv,
T: lub zog nruj, Nm
k: coefficient ntawm lub zog nruj, feem ntau yog 0.12
σs: cov khoom siv bolt tso zis zog, Mpa
Raws li: txaus ntshai Thaj tsam hla ntu, mm2
d: Lub npe txoj kab uas hla, hli

Hebei Chengyi Engineering Materials Co., Ltd. tau cog lus rau kev tsim khoom thiab kev txhim kho ntawm ntau yam fasteners. Cov khoom lag luam tau siv dav hauv hluav taws xob, cov qauv hlau, kev tsim kho, kev khawb av, photovoltaic, tshuab, kev thauj mus los, kev tsheb ciav hlau thiab lwm yam teb. Kev tswj hwm system los muab cov neeg siv khoom nrog cov kev pabcuam ib zaug xwb, kev saib xyuas thiab kev lees paub.