中国精学生妹品射精久久,国产成人盗摄精品a片在线观看,天天躁日日躁AAAAXXXX,邻居漂亮的妻子5在线观看

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: sales@chinatungsten.com
舊版