陶瓷管：用于各類繞線機(jī)及紡織機(jī)械中的過線過絲部件。由精密陶瓷加工，超精拋光達(dá)ra0．2，由于硬度較高，表面光滑，漆包線在其表面滑動時順暢不受損傷。
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.
