Inspection of pipe fitting cap weld

　　The main production equipment of pipe fitting cap is maintenance. Maintenance as a supplement. Local disassembly and inspection of the equipment are carried out as planned. Clean the prescribed parts and dredge the roads and pipelines. Replace or clean the oil washing line and oil filter, adjust the fit clearance between the parts of pipe fitting cap equipment, tighten the loose bolts, and replace the unusable bolts in time. Ordinary maintenance can be done once a month. The large-scale maintenance is mainly based on maintenance workers, with specific operators participating and included in the monthly maintenance plan of the equipment. Such major maintenance is to repair and inspect some key parts of the cap, replace some vulnerable parts, and repair the electrical parts. The local key position recovery accuracy can satisfy the minimum requirement for processing parts. We just want the equipment to run, not to maintain it. It's not possible. Only by combining use with maintenance and maintenance, can the pipe fitting cap be better served for the factory.

　　As a sealing and fastening connector, pipe fitting cap is easy to install, flexible in position and long in service life. It is widely used in large containers in aerospace, petroleum, chemical and other fields.

　　First of all, the weld of pipe fitting cap should be inspected by 100% ultrasound or X-ray. There should be no cracks or other flange connection or strength reduction defects on the surface of the pipe fitting cap. Ultrasound inspection of pipe fitting cap shows that grade I is qualified product and grade II is required for radiation. If the pressure vessel pattern where the pipe fitting cap is located fails to meet the above requirements for the inspection of the vessel shell, it should be carried out according to the contract or the label in the pattern.