The heat-shrinkable sleeve (tape) could be used widely for protecting oil pipe and gas pipe from corrosion.

该专用料生产的热收缩套（带）产品可广泛用于钢质输油、输气管道的防腐补口、补伤。

The field of application, the principle of processing technology of producing heat-shrinkable tubes are discussed briefly.

简要概述了热收缩管的应用范围、成型加工原理和制造工艺过程。

Cable shall endure heat shrinkable test; shrinkable ratio shall be no more than 2%; no cracks appear on the surface of cable.

电线经受热收缩试验，收缩率应不超过2%。电线表面应不出现裂纹。