GB/T 37599-2019 Wide and heavy steel plate for sour service petroleum and natural gas pipe lines

GB/T 8363-2018 Steel—Drop-weight tear tests method GB/T 8650-2015 Evaluation of pipeline and pressure vessel steels for resistance to hydrogen-induced cracking GB/T 10561-2005 Steel—Determination of content of nonmetallic inclusions—Micrographic method using standards diagrams GB/T 14977-1994 General requirement of surface finish for hot rolled steel plates GB/T 14977-2008 General requirement for surface condition of hot-rolled steel plates GB/T 14977-2025 General requirement for surface condition of hot-rolled steel sheet and plate GB/T 15970.2-2000 Corrosion of metals and alloys—Stress corrosion testing—Part 2:Preparation and use of bent-beam specimens GB/T 17505-1998 Steel and steel products General technical delivery requirements GB/T 17505-2016 Steel and steel products—General technical delivery requirements GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition GB/T 20123-2006 Steel and iron—Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) GB/T 20124-2006 Steel and iron—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas (Routine method) GB/T 20125-2006 Low-alloy steel—Determination of multi-element contents—Inductively coupled plasma atomic emission spectrometric method