roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain ANSI 80 /DIN 16A-1 standard roller chain 1.material:40MN/ ... inner box, then pack in standard export carton or wooden case,also can packing as your requirement,can print ... chains: 25NP,35NP,41NP,40NP,50NP10. Coupling chains The Chain technic treatment is as below:1.Shot peening2.Bluing3. ...