Where is the difference between the quality of sta

Where is the difference between the quality of stainless steel elbow pipe fittings  

The difference between the quality of stainless steel elbow pipe material is where, mainly to see whether stainless steel elbow pipe in the use of corrosion resistant material, in stainless steel and chromium and after stainless steel elbow pipe corrosion resistance and process performance or some improvement, but low carbon nickel steel to obtain different organization, nickel content to reach 24%,  And with 27% nickel to make the corrosion resistance of steel in some media significantly changed, and the corrosion resistance of 310S stainless steel plate mainly depends on its welding composition, and the internal structure, its main role of chromium.  

Stainless steel elbow pipe positioning cold arc and the end should be smooth transition, bead can't is too high, must ensure that the fuse is good, in order to prevent to produce welding defects such as slag, positioning welding crack, crack in the weld must be removed after repositioning welding, after tack welding, the interface is not flush, and should be corrected before the formal welding, to avoid forced assembly.  In order to avoid the cracking of the positioning weld or the formal weld during the welding process, the length of the positioning weld can be increased, and the spacing of the positioning weld can be reduced, or heat treatment measures can be adopted.  

Elbow pipe fittings are divided into gb elbow, stainless steel elbow pipe fittings processing methods are also many, many also belong to the mechanical processing class, with a lot of stamping elbow, welding elbow, straight seam elbow, seamless elbow and other pipe fittings.  The machining of pipe fitting belongs to the combination of the two kinds of pressure machining.