{"id":137,"date":"2014-05-16T15:05:34","date_gmt":"2014-05-16T07:05:34","guid":{"rendered":"http:\/\/www.sungda.com\/?p=137"},"modified":"2023-12-09T15:45:15","modified_gmt":"2023-12-09T07:45:15","slug":"comparison-of-rma-and-din-standard","status":"publish","type":"post","link":"https:\/\/www.sungda.com\/index.php\/comparison-of-rma-and-din-standard\/","title":{"rendered":"Comparison of RMA and DIN Standard -SUNGDA GROUP"},"content":{"rendered":"\n
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All conveyor belts follow several internationally accepted rubber covering grade systems, most countries follow the German DIN22102 grade standard, of course, there are also regional grade standards, for example, most American countries are used to follow the American RMA grade standard, then what is the difference between these two standards?<\/p>\n\n\n\n

RMA is the abbreviation of “Rubber Manufacturers Association”in United States, it has established two standard grades of rubber conveyor belt cover: RMA-I and RMA-II, the RMA-I (17Mpa) grade meets the higher requirements of rubber stretch and elongation, and usually shows higher cutting and scratch resistance than the RMA-II (14Mpa).<\/p>\n\n\n\n

ARPM (Association for Rubber Products Manufacturers), a successor of RMA. Published their conveyor belt handbook in 2011, determining grade 1 with tensile strength of 17 MPa, elongation at break of 400 % and volume loss of 125 mm\u00b3, and grade 1 with tensile strength of 14 MPa, elongation at break of 400 % and volume loss of 175 mm\u00b3, This means that the standards established by ARPM have higher requirements for abrasion rate.<\/p>\n\n\n\n

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