GB/T 13752-2017 Design rules for tower cranes

GB/T 13752-1992 Design rules for tower cranes

GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 985.1-2008 Recommended joint preparation for gas welding,manual metal arc welding,gas-shield arc welding and beam welding GB/T 985.2-2008 Recommended joint preparation for submerged arc welding GB/T 1231-1991 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures GB/T 1231-2006 Specifications of high strength bolts with large hexagon head,large hexagon nuts,plain washers for steel structures GB/T 1231-2024 High strength bolts with large hexagon head assemblies for steel structures GB/T 1591-1994 High strength low alloy structural steels GB/T 1591-2008 High strength low alloy structural steels GB/T 1591-2018 High strength low alloy structural steels GB/T 1800.2-2009 Geometrical Product Specifications (GPS)—Limits and fits—Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts GB/T 2423.56-2006 Environmental testing for electric and electronic products—Part 2:Test methods—Test Fh:Vibration, broad-band random(digital control)and guidance GB 2585-1981 The technical specification for steel rails with a weight of 38 to 50 kilograms per meter for use in railways GB/T 2585-2007 Hot-rolled steel rails for railway GB/T 2585-2021 Hot-rolled steel rails for railway GB/T 3077-1999 Alloy structure steels GB/T 3077-2015 Alloy structure steels GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB/T 3098.2-2000 Mechanical properties of fasteners—Nuts—Coarse thread GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 3098.4-2000 Mechanical properties of fasteners—Nuts—Fine pitch thread GB/T 3480-1997 Calculation methods of load capacity for involute cylindrical gears GB/T 3480.1-2019 Calculation of load capacity of spur and helical gears—Part 1:Basic principles,introduction and general influence factors GB/T 3480.2-2021 Calculation of load capacity of spur and helical gears—Part 2:Calculation of surface durability(pitting) GB/T 3480.3-2021 Calculation of load capacity of spur and helical gears—Part 3:Calculation of tooth bending strength GB/Z 3480.4-2024 Calculation of load capacity of spur and helical gears—Part 4:Calculation of tooth flank fracture load capacity GB/T 3480.5-2008 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 3480.5-2021 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 3480.6-2018 Calculation of load capacity of spur and helical gears—Part 6:Calculation of service life under variable load GB/Z 3480.20-2025 Calculation of load capacity of spur and helical gears—Part 20:Calculation of scuffing load capacity—Flash temperature method GB/Z 3480.21-2025 Calculation of load capacity of spur and helical gears—Part 21:Calculation ofscuffing load capacity—Integral temperature method GB/Z 3480.22-2024 Calculation of load capacity of spur and helical gears—Part 22:Calculation of micropitting load capacity GB/Z 3480.31-2025 Calculation of load capacity of spur and helical gears—Part 31:Calculationexamples of micropitting load capacity GB/T 3480.5-2008 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 3480.5-2021 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 3632-1995 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures GB/T 3632-2008 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures GB/T 3766-2001 Hydraulic fluid power—General rules relating to systems GB/T 3766-2015 Hydraulic fluid power—General rules and safety requirements for systems and their components GB/T 3811-2008 Design rules for cranes GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 4942.1-2001 Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code) GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machined(IP code)—Classification GB/T 5117-1995 Carbon steel covered electrodes