... metallurgy slag ,sand,and concrete,etc. wear resisting pipe 1. bimetal abrasion resistant steel pipes lined with a layer of high chromium ... to be high intensity(HRC 55-62) and highly abrasion resistant layer(1.8mm), and leaves the outer wall with ... The dual wall pipe has the advantage of safety, longer work life, energy saving, continuum, low maintenance. abrasion resistant steel pipe (inner hardened/ ...