When welding the tank roof plate and the edge angle steel of the stainless steel tank, the main welds should be distributed symmetrically and evenly, and should be de-welded in sections along the same direction. The inner welds should be welded first, and then the outer welds. For long radial welds, the symmetrical welding method with separated seams should be used, and the welds should be de-welded in sections from the center outward. Before welding, the assembly quality should be checked, and the groove surface and both sides of the groove should be cleaned.20㎜rust, moisture and dirt within the scope and should be fully dried.
       Defect depth or grinding depth exceeded1mmWhen necessary, repair welding should be performed and polished smooth. Too deep0.5㎜Harmful defects such as scratches, arc scratches, weld scars, etc. should be polished and smoothed. The thickness of the polished steel plate in front of the reverse osmosis pump should not be less than the nominal thickness of the steel plate minus the negative deviation value. When welding the wall of a stainless steel storage tank, weld the vertical weld first, then the circumferential weld. After welding the longitudinal welds of two adjacent walls, weld the circumferential weld between them. Welders are evenly distributed and weld in the same direction. Position welding and welding of work clamps should be performed by qualified welders, and arc ignition should not be on the base metal or the completed weld bead.
       These are the welding requirements for stainless steel storage tanks. Only with good welding can it have good quality and last longer.