First, the size, here attached our standard sizes and packages ways, if you interested,we could just send you the film later, then the important thing about size is error, the error of our product diameter is controlled at -0.02; So this size is very good
Second, the date sheet certificate, The chemical composition is controlled according to the requirements of the American Welding Society standard AWS A5.18. The welding wire has good arc stability and high weld performance during welding.
Third, the weight of spool, from out factory , the standard data as below
1kg spool D100 0.06kg；
5kg spool D200 0.25kg，
15kg spool D300 is 0.67kg
Four, Thickness of copper plating is 3UM(Micron),See, we are very professional and so we make every part perfect for our clients, So, In one word, our quality is excellent in this industry