Chains or other gear which have been lengthened, altered or repaired by welding, must be properly heat treated where necessary, and, before again being put into use, must be tested and reexamined in the manner set forth in WAC 296-304-170 through 296-304-17023.
Wash. Admin. Code § 296-304-16013
Order 74-25, § 296-304-16013, filed 5/7/74.