GB/T 15112-2017 Shaft sinking winch

GB/T 15112-2007 Shaft sinking winch

GB/T 1176-2013 Casting copper and copper alloys GB/T 4879-2016 Rustproof packaging 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 10095.1-2008 Cylindrical gears—System of accuracy—Part 1:Definitions and allowable values of deviations relevant to corresponding flanks of gear teeth GB/T 10095.2-2008 Cylindrical gears—System of accuracy—Part 2:Definitions and allowable values of deviations relevant to radial composite deviations and runout information 煤矿安全规程(国家安全生产监督管理总局) GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 6402-1991 Steel forgings—Method for ultrasonic examination GB/T 6402-2008 Steel forgings—Method for ultrasonic testing GB/T 6402-2024 Method for ultrasonic testing of steel forgings GB/T 13306-1991 Plates GB/T 13306-2011 Plates GB/T 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product GB 16423-1996 Safety regulations for metal and nonmetal opencast mines GB 16423-2006 Safety regulations for metal and nonmetal mines GB 16423-2020 Safety regulation for metal and nonmetal mines GB/T 25706-2010 Code of designations for mining machinery products JB/T 7929-1999 Cleanliness for gear drive units