It is also introduced that typical thread form and performance as well as the production status and developing prospect of inside thread copper pipe abroad and at home.
介绍了典型螺纹结构和性能,以及国内外内螺纹铜管的生产现状和发展前景。
The pull rod is screwed into the inside thread of the anchor head.
这是鉆桿丝扣油,不能用在鉆铤丝扣上。
The efficiency and quality of inside thread influence directly production rate and ratio of precision. Therefore, it is very important that choosing appropriate process way.