R50-R60: used long rail steel scrap in compliance with ISRI standard classification R50 (51.67 kg/m), Suitable for re-rolling into bars and shapes. Free from bent and twisted rails, frog, switches, and guard rails, or rails with split rail. b) R65: used long rail steel scrap in compliance with ISRI standard classification R65 (64.72 kg/m), in length 1 & 1,5meters on per bar basis, Suitable for re-rolling into bars and shapes. Free from bent and twisted rails, frog, switches, and guard rails, or rails with split rail. c) Clean scrap without slag, dross, trash, wood, plastic, oily parts, grease, alloy, prohibited goods, whole sets of machine, vehicles, and usable parts for machines, cast iron, motor turning blocks, engine blocks, war and explosive or armor-plated materials, excess rust, corrosion, dust and dirt, mud or wastes and without any harmful impurities and totally free of radioactive contamination and poisonous material and any other materials exceeding the level accepted and allowed by international acceptable norms.