GB 50203 Code for acceptance of constructional quality of masonry structures*, 2011-02-18 Update
GB 50204 Specification for construction quality acceptance of concrete structure engineering*, 2015-09-01 Update
GB 50369 Code for construction and acceptance of oil and gas long-distance transmission pipeline engineering*, 2014-05-29 Update
SY 4208-2008 history
2016SY/T 4208-2016 Construction Quality Acceptance Specification for Oil and Gas Construction Projects Long-distance Pipeline Line Projects
2008SY 4208-2008 Code for quality acceptance of oil and gas construction engineering oil and gas transmission pipeline project
SY 4208-2008 Code for quality acceptance of oil and gas construction engineering oil and gas transmission pipeline project was changed to SY/T 4208-2016 Construction Quality Acceptance Specification for Oil and Gas Construction Projects Long-distance Pipeline Line Projects.