可在钢桶的两端的螺纹段外侧设置着无螺纹的抗冲击光面段。
Threadless anti-impact smooth sections can be arranged on the outer ends of the threaded sections of both ends of the steel barrel.
可在钢桶的两端的螺纹段外侧设置着无螺纹的抗冲击光面段。
Threadless anti-impact smooth sections can be arranged on the outer ends of the threaded sections of both ends of the steel barrel.
应用推荐