The prepared core pipe with 75mm to 360mm of inside diameter and 7mm to 30mm of wall thickness can replace various paper core pipes, thereby having a wide popularization and application prospect.
用其制备成的内径75～360毫米、壁厚7～30毫米的芯管，可以 取代现有各种纸质芯管，具有广泛推广应用前景。
This paper describes the structure and basic operating principle about the squeezed ma - chine of core of the long cylinder of main oil pipe of Cat, 121 diesel engine's body.
本文介绍了卡特匹勒121型柴油机机体主油管长圆柱坭芯挤压机的结构和基本工作原理。
This paper introduces a control system for hydraulic powered supports by using multiple-core pipes, and puts a structure-characteristic of the multiple-core pipe.
介绍采用多芯胶管的液压支架控制系统及其使用的多芯胶管的结构特点。
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