Belt Calibration checks the wire thickness, thickness found enough to make up for re-jet spray or shoveled away with a hammer percussion hollowing inspection found hollowing should re-sprayed.

• 用带刻度的钢针抽查厚度，如发现厚度不够，补喷或铲掉重喷，用锤子敲击检查空鼓，发现空鼓应重喷。