偷拍 凸隐 视频 播放_仙踪林国精产品视频_亚洲日韩精品av无码麻豆_最原始进入静静的大肠_宝贝屁股翘起来浪一点_办公室强肝的播出方式与评价_欧美人禽zozσ伦交_长篇乱肉合集乱500小说_ysl口红水蜜桃色号60601

Tungsten Alloy Bolt

Tungsten alloy bolt is a kind of fastener composed of the head and the screw (cylinder with external thread) two parts. It needs to cooperate with the nut, which is used for fastening two parts with through hole. This kind of connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a removable connection.

tungsten alloy bolt pictureAs a kind of cylindrical screw fastener with nuts, tungsten alloy bolt is widely used in daily life and industrial production. It can be divided into ordinary bolt and hinged hole bolt according to the stress mode of connection. According to the head shape, it can be divided into hexagonal head, round head, square head, countersunk head, among which hexagonal head is the most commonly used, the countersunk head is generally used in the required connection place.

More details, please visit:
http://www.tungsten-alloy.com/tungsten-alloy-cylinder.html

Comments are closed.

Address: 3F, No.25-1 WH Rd., Xiamen Software Park Ⅱ, FJ 361008,China Copyright ? 1997 - 2025 CTIA All Rights Reserved
Phone:+86-592-5129696,+86-592-5129595;    Email: [email protected]
舊版