NACE MR0175 NACE MR0175 jssj (Mechanical) (OP) 27 Jul 16 06:34 Dear friends, Please help. In the above subject,what is "M R" stands for? Thanks in advance RE: NACE MR0175 SJones (Petroleum) 27 Jul 16 07:56 Material Requirements Steve Jones Corrosion Management Consultant http://www.linkedin.com/pub/8/83b/b04 All answers are personal opinions only and are in no way connected with any employer. RE: NACE MR0175 jssj (Mechanical) (OP) 2 Aug 16 07:29 Thanks very much Steve!!!