目前，钢管内壁除锈使用的喷砂枪，基本上是烟斗式的，枪头不能旋转，依靠辊轮架旋转钢管配合，才能完成除锈工作。辊架设备投资大，功率消耗大，设备沉重，移动使用不方便，对弯头、三通等异型管件除锈还不能使用。目前在市场上出现两种钢管内壁喷砂枪，一种是“电动旋转... At present, the use of steel pipe wall rust blasting gun, basically pipe type, gun head can not be rotated, relying on the rotation of the roller frame with the cooperation in order to complete the derusting work. Roll rack equipment investment, power consumption, heavy equipment, mobile use is not convenient, on the elbows, links and other special-shaped pipe rust can not be used. At present there are two types of pipe wall blasting gun in the market, one is "electric rotary ...