... .Our pipes use special ceramic lining ---B4C. 2.Performance of Hardness, Abrasive resistant, Impact Resistant,service life. Commodity: ... bulletproof material.2. Our products have much better performance of Hardness, Abrasive resistant, Impact Resistant ,Corrosion Resistant and ... 5-7.0 Mpa.m1/2Thermal Conductivity20 m0k29 m0kCoefficient of thermal expansion7.2x1064.5x106 Concrete pump pipes Type : ...