This specification applies to the piping system of rural household biogas digesters.
GB/T 7636-1987 history
1987GB/T 7636-1987 Standard on design of biogas pipelines for peasant household
GB/T 7636-1987 Standard on design of biogas pipelines for peasant household was changed to NY/T 1496.4-2014 Biogas transmission system for rural household.Part 4:Design and installation specifications.