GB/T 36701-2018 Guideline for defect repair of buried steel pipelines

GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings GB/T 31032-2014 Welding and acceptance standard for steel pipings and pipelines GB/T 23257-2009 Polyethylene coating for buried steel pipeline GB/T 23257-2017 Polyethylene coating for buried steel pipeline GB/T 28055-2011 Technical standard for hot tapping and plugging on steel pipeline GB/T 28055-2023 Technical specification for hot tapping and plugging on steel pipeline GB/T 30582-2014 Risk-Based-Inspection and assessment methodology of external damage for buried steel pipelines NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.3-2023 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing NB/T 47013.3-2015 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing NB/T 47013.4-2015 "Non-destructive testing of pressure equipment - Part 4: Magnetic particle testing" NB/T 47013.5-2015 Non-destructive testing of pressure equipment - Part 5: Penetrant testing SY/T 4109-2020 Petroleum and natural gas steel pipeline non-destructive testing SY/T 4109-2013 Non-destructive testing of oil and gas pipelines made of steel SY/T 5918-2017 Specification for Repairing Coating and Insulation of External Steel Pipe Pipeline Buried in the Ground SY/T 5918-2011 Technical specification for the repair of external protective coating for buried steel pipes SY/T 6444-2018 SY/T 6444-2018 Petroleum engineering construction safety specification SY/T 6444-2010 SY/T 6444-2010 Safety regulations for construction and construction safety of petroleum engineering facilities SY/T 4109-2005 Petroleum and natural gas steel pipeline non-destructive testing SY/T 5918-2004 The Specification for Repairing External Anti-corrosion Coating of Underground Steel Pipe (SY/T 5918-2004) SY 6444-2000 Oil engineering construction safety regulations GB 50251-2015 Code for design of gas transmission pipeline engineering GB 50253-2014 Code for design of oil transportation pipeline engineering GB 50369-2014 Code for construction and acceptance of oil and gas long-distance transmission pipeline engineering SY/T 5918-2024 Techniques and specifications for repairing the external protective layer and insulation layer of buried steel pipes