Appearance: Have light silver grey luster, and the colour is well distributed.Slight winding acceptable, height of ardian <= 7mm. Specification: Measurements of semi-finished products:12X12X550mm， 13.5X13.5X530mm and 14X14X570mm. Other specifications supplied upon requirement. Types: Four types, W-1，W-2，W-3，W-4 according to different chemical components and using requirements.Component, weight and density:W >= 99.92% Weight: 1000 - 1200g/bar Density: W-1，W-2，W-3，Typical-1 >= 17.5g/cm3 Packing: Different packing can meet customerss requirements.