UIC 897-9 (E) 2nd Edition, July 1979
TECHNICAL SPECIFICATION FOR THE PREPARATION FOR WELDING OF THE EDGES OF
ROLLED PRODUCTS MADE OF PLAIN CARBON OR LOW-ALLOY STEELS WITH A TENSILE
STRENGTH OF LESS THAN 610 N/MM2, FOR ARC WELDING WITH COATED ELECTRODES AND
FOR SEMI-AUTOMATIC ARC WELDING