When using small diameter seamless steel pipe, cracks may occur if improperly treated. If they are not found and repaired in time, there are serious risks. Therefore, we must strictly follow the indirect process related construction specifications and process requirements to operate, find out more real welding process, and check the quality of welding. If there are still cracks in this situation, we can take the following measures to solve it:
(1) Welders engaged in repairing small diameter seamless steel pipes must hold corresponding engineering certificates. The quality of welders is always good and the maintenance must be qualified.
(2) Handheld grinder and other mechanical defects can be used to remove welding defects.
(c) Repair of welding methods and welding parameters must be carried out in accordance with relevant welding specifications;
(4) Carefully inspect and repair the weld of small diameter seamless steel pipe;
(5) Non-destructive testing is used to check all cracks and determine the exact location.
(6) Select filler materials that meet the process specifications, i.e. welding rods, and dry them according to the regulations.
(7) Welding environment cracks of small diameter seamless steel pipe to meet the welding requirements of temperature, rain and wind speed.
(8) After repair, the welder must mark the position next to the repair location and sign the repair record.
(9) The long-term guarantee of rework data should be ensured, and the repair parts of small-caliber seamless steel tubes should be inspected regularly in the course of use, so as to solve the problems in time.