Double pitch roller chain, also referred as extended pitch conveyor roller chains, are built in accordance with ANSI B29.4. Products with attachments are widely used in conveyor applications when loads are low and speeds are moderate. Available variations include larger diameter rollers and hollow pin design. These chains can also be supplied in stainless steel, nickel-plated or zinc-plated versions (oversized roller chain can be steel or engineering plastics).The main specification includes C2040,C2042,C2050,C2052,C2060H,C2062H,C2080,C2082,C2080H,C2082H etc.