Coil Pipe Inside Rockwool Insulation Color Steel Cladding Capacity (CBM): 20, 30, 40, 50, 60, 70, 85 Asphalt Storage TankHorizontal quadrate type with thermal oil heating pipes, outside with rockwool insulation and color steel cladding keep shining shape.Capacity (CBM): 20, 30, 40, 50, 60, 70, 85