... meet or exceed DIN, ANSI,ISO,BS,JS standard. Double pitch C2080H Standard Roller Chain Our Precision roller chain meet or exceed ... DIN, ANSI,ISO,BS,JS standard, and our chains stand up to the toughest working environments ... -win business relations with you in the near future.General Standard for Roller Chain:ROLLERSolid RollerMaterial 1035,1045 or 1050Through harden ...