【摘要】 本文介绍了复合管的各种用途、生产工艺。为满足市场对复合管的需求，对于我国直缝焊管机组改造有借鉴作用。更多还原

【Abstract】 This paper reviews the various applications and processes of the clad tubing. Furthermore, to meet the needs from market, it is helpful to reconstruct the existing longitudinally welded tubing mill in our country.更多还原