陶瓷管：用于各类绕线机及纺织机械中的过线过丝部件。由精密陶瓷加工，超精抛光达ra0．2，由于硬度较高，表面光滑，漆包线在其表面滑动时顺畅不受损伤。

ceramic tube: applicable for wire or silk rolling of various winding machines and textile machinery. it is made of precise ceramic and polished up to ra0.2. high hardness and smooth surface enable the enameled wire free from hurt during surfaces sliding.