A022 stainless steel welding rod found quite GB E316L-16 AWS E316L-16 
 Description: A022 is a titanium calcium type of ultra-low carbon Cr18Ni12Mo2 stainless steel electrode, the deposited metal carbon content ≤ 0.04%, with good heat resistance, corrosion and cracking, anti-hole performance, good performance of the operating process , drug-resistant skin red, good intensity. Can be AC and DC. 
 Uses: used in welding urea, synthetic fibers and other equipment and the same type of stainless steel can also be used for post-weld heat treatment can not be chrome stainless steel and composite steel, dissimilar steel 

 A022Mo stainless steel electrodes meet the GB E317L-16 rather AWS E317L-16 
 Description: A022Mo titanium calcium type of ultra-low carbon Cr18Ni12Mo3 stainless steel electrode, the deposited metal carbon content ≤ 0.04%, with good heat resistance, corrosion and cracking, anti-hole performance, in particular, corrosion resistance than A022, a good operating process performance, drug-resistant skin red, good intensity. Can be AC and DC. 
 Uses: 00Cr18Ni12Mo3 low carbon stainless steel, can also be used for post-weld heat treatment can not be chrome stainless steel and composite steel and dissimilar steels.