... 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 ... relations with you in the near future.General Standard for Roller Chain:ROLLERSolid RollerMaterial 1035,1045 or ... core 39-45HRCShot peening per the spec Double pitch C2080H Standard Roller Chain