Each device or workstation in the system is equipped with a call light. If abnormal calls are found during the production process regarding oil pipe materials, quality, equipment, safety, etc., they will be wirelessly uploaded to the system. The system will reply and light up the call indicator light. Relevant personnel will locate the faulty workstation in a timely manner through the uploaded information and indicator light, so that problems in the production process can be dealt with in a timely manner.