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 Guard Strip

Tungsten alloy guard strip is a kind of tungsten alloy bar that is inserted around the drill bit to improve the life of the drill bit. The general material of the guard strip is tungsten alloy, and the purpose is to keep the bit diameter. Tungsten alloy has high density and strength, good impact resistance, good corrosion resistance, good abrasion resistance and high temperature oxidation resistance.

tungsten alloy guard strip pictureChinatungsten Online is based on high purity raw material tungsten carbide powder, high precision technical equipment, and strict quality inspection system, so that tungsten alloy guard strips have high quality performance that other similar products do not.

More details, please visit:
http://www.tungsten-alloy.com/en/alloy04.htm

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