1. The product is a continuous on-line production, the thicker the wall, the greater the investment in the unit and the welding equipment, the less economical and practical it is.2. The thinner the wall, the lower its input-output ratio will be. Secondly, the product's technology determines its advantages and disadvantages. Generally, the welded steel pipe has high precision and uniform wall thickness.3. The surface brightness of the stainless steel pipe is high, any length can be customzied. Therefore, it shows its economy and aesthetics in high-precision, medium and low pressure fluid applications.According to the welding technology it can be divided into automatic welding and manual welding. Automatic welding always use submerged arc welding, plasma welding,manual welding usually adopt argon arc welding.