... ISO9001:2008 Detailed Production DescriptionANSI 60 durable triplex roller chain(12-3R)1)material : 40mn/A32)pitch : 19. ... 60 durable triplex roller chain(12-3R) Pccking ANSI 60 durable triplex roller chain(12-3R) export containerMain products ... as the following1)roller chains: A series(12.7-63.5mm pitches),B series (9.525-50 ... :A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-24)double pitch transmissions ...