GB/T 35478-2017紧固件螺栓、螺钉和螺柱预涂聚酰胺锁紧层技术条件国家标准
英文:Fastener—Steel bolts,screws and studs with polyamide locking pre-coating technical specification GB/T 35478-2017介绍: 国...
英文:Fastener—Steel bolts,screws and studs with polyamide locking pre-coating technical specification GB/T 35478-2017介绍: 国...