... slag ,sand,and concrete,etc. wear resisting pipe 1. bimetal abrasion resistant steel pipes lined with a layer of high ... plant, steel and iron metallurgy plant,cement plant,coal washing & selecting plant and so on. 2. Inner hardened pipe are used ... dual wall pipe has the advantage of safety, longer work life, energy saving, continuum, low maintenance. abrasion resistant steel pipe (inner hardened/ ...