1. The nozzle to be welded has been cleaned up to the standard according to the cleaning requirements.
2. When hoisting the steel pipe, it is necessary to use a special nylon sling for the hoisting pipe, and no other slings shall be used, especially the use of steel wire ropes to hoist the steel pipe is strictly prohibited.
3. The pair of steel pipes needs to be operated with a counterpart device, and it is strictly forbidden to use only a screwdriver.
4. All-position pipeline automatic welding machine pair gap.
5. The amount of misalignment is less than or equal to 1.0mm.
6. The distance between adjacent annular seams is greater than 2.0 times the outer diameter of the pipe.
7. The staggered gap of spiral welding seam or straight seam should be greater than 100mm.
8. Do not use a sledgehammer to directly hammer the nozzle for strong correction before the counterpart.
9. After the start of root welding, no correction in any form shall be performed on the wrong joint.
10. All welders participating in welding need to hold a welder certificate, and they need to wear a logo certificate during the welding work.
