1, Visual inspection
Weld surface of ASTM A131 B steel plate shall be flat and smooth, with the same width of weld seam, and the remaining height shall meet the process requirements. ASTM A131 B steel plate surface should be free of porosity, cracks, underbite defects.
2, Nondestructive testing
The weld surface and near surface defects of ASTM A131 B steel plate were inspected by magnetic particle. The welding seam of ASTM A131 B steel plate was examined by ultrasonic. The weld was then examined by X-ray film.
3, Defect handling
If the ASTM A131 B steel plate is found to have pores, cracks and other defects exceeding the standard, such as slag inclusion, edging, non-fusion, etc., batch removal of the defective parts shall be carried out. After the batch removal, it shall be polished and cleaned up before welding.
