1API Drawworks for drilling rig. 2.Conform to API 8A. 3.280--3000HP drawworks. 4.JC10B,JC15DB,JC30B,JC40B,JC50B,JC50D,JC70D Drawworks for drilling rig BOMCO with more than thirty years experience in desingning and manufacturing drawworks, can design and manufacture 280--3000HP drawworks. API Drawworks for drilling rig