The connection scheme of stainless steel seamless elbows is ranked according to speed as follows:
1、 Flange connection (5 minutes)
1. Pre assembly
Insert the flange into both ends of the seamless elbow and secure it with temporary clamps (eliminating the need for handrails).
2. Quick sealing
Metal wrapped gasket between flanges (high pressure resistant, no need to apply sealant).
3. Bolt locking
Tighten diagonally with an electric wrench (avoiding manual tightening one by one), saving 70% time.
Flange connection is suitable for chemical maintenance and repair, as well as temporary pipeline laying.
2、 Socket argon arc welding (15 minutes)
Acceleration techniques:
1. Groove pretreatment
Polish the groove with a stainless steel special grinding wheel using an angle grinder (completed in 30 seconds, three times the time for a regular grinding wheel).
2. Continuous welding
Select ultra-fine welding wire with a diameter of 1.6mm and pulse argon arc welding machine (with sufficient melting depth/small heat affected zone); The welding gun completes the circumferential seam in one go without lifting the arc (50% faster than spot welding).
3. No slag cleaning design
During welding, argon gas should be used to protect the back (the inside and outside of the weld should be smooth and free of secondary treatment).
In short, the speed of different connection methods for stainless steel seamless elbows is: flange connection>socket argon arc welding>traditional welding.