If the key point of welding is the thickness of tubesheet, the thickness standard of tubesheet should be referenced and followed. For tubesheet welding, thickness is an important factor, which will affect the design of weld, the selection of welding materials and the determination of welding technology. Usually, according to the thickness of the tubesheet, appropriate welding methods and equipment are selected to ensure that the weld quality and strength meet the requirements.

If the focus of welding is on the standard of circular tube, it is necessary to refer to and follow the relevant standards of circular tube. The standard of circular tube includes pipe diameter, wall thickness, material and other indicators, which will affect the selection and judgment of welding parameters. According to the standard of circular tube, the appropriate welding current, welding speed and welding material can be determined to meet the welding process requirements.