Kev kho deg ntawm tus kheej-drilling screws yuav tsum muaj cov txheej txheem tshwj xeeb. Cov txheej txheem tsim khoom dab tsi feem ntau yog siv rau kev kho saum npoo? Hebei Wotu Fastener Manufacturing Co., Ltd. yuav piav qhia txog kev kho oxidation hauv qab no.
Kev kho deg ntawm tus kheej-drilling screws yuav tsum muaj cov txheej txheem tshwj xeeb. Cov txheej txheem tsim khoom dab tsi feem ntau yog siv rau kev kho saum npoo? Hebei Wotu Fastener Manufacturing Co., Ltd. yuav piav qhia txog kev kho oxidation hauv qab no.
Dub txheej nrog roj yog ib qho nrov plating rau kev lag luam fasteners vim nws yog qhov pheej yig tshaj plaws thiab zoo nkaus li zoo kom txog thaum cov roj ntws tawm. Txij li cov txheej txheej dub yuav luag tsis muaj peev xwm tiv thaiv xeb, nws yuav xeb sai sai tom qab cov roj raug tshem tawm. Txawm hais tias nyob rau hauv lub xeev oiled, nws qhov nruab nrab ntsev tsuag tshuaj ntsuam xyuas tsuas yog 3-5 teev. Nyob rau tib lub sijhawm, blackened self-drilling ntsia hlau fasteners muaj tsis zoo torque-preload sib xws. Txhawm rau txhim kho qhov no, roj tuaj yeem siv rau cov xov sab hauv ua ntej screwing lawv thaum lub sij hawm sib dhos. Hebei Wotu Fastener Manufacturing Co., Ltd. (yav tas los Handan Pingyuan High Strength Fastener Manufacturing Co., Ltd.), lub chaw tsim khoom ntawm tus kheej drilling screws, tau tsim nyob rau hauv 1990s thiab yog ib lub tuam txhab loj tshaj plaws high-strength fastener nyob rau hauv North China.
