This standard specifies the minimum quality specifications for four grades of standard rubber, applicable to samples taken and prepared according to GB8083-87 "Natural Raw Rubber Standard Rubber Sampling" and GB8084-87 "Natural Raw Rubber Sample Preparation" method, and according to Natural raw rubber tested in this standard.
GB 8081-1987 history
2018GB/T 8081-2018 Rubber, raw natural—Guidelines for the specification of technically specified rubber (TSR)
2008GB/T 8081-2008 Rubber,raw natural.Guidelines for the specification of technically specified rubber(TSR)
1999GB/T 8081-1999 Raw natural rubber--Standard rubber--Specifications
1987GB 8081-1987 Natural raw rubber standard rubber specification
GB 8081-1987 Natural raw rubber standard rubber specification was changed to GB/T 8081-1999 Raw natural rubber--Standard rubber--Specifications.