GB/T 42091-2022 Specification of smelting and casting of vacuum ingot for heavy steel forgings

GB/T 223.81-2007 Iron,steel and alloy—Determination of total aluminum and total boron contents—Microwave digestion-inductively coupled plasma mass spectrometric method GB/T 223.82-2007 Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method GB/T 223.82-2018 Steel and iron—Determination of hydrogen content—Thermal conductivity/infrared method after fusion under inert gas GB/T 223.83-2009 Steel and iron—Determination of high sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.84-2009 Steel and iron—Determination of titanium content—Diantipyrylmethane spectrophotometric method GB/T 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace GB/T 223.87-2018 Iron, steel and alloy—Determination of calcium and magnesium—Inductively coupled plasma mass spectrometric method GB/T 223.88-2019 Iron,steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method GB/T 223.89-2019 Iron,steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method GB/T 223.90-2021 Iron,steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method GB/T 223.91-2021 Iron,steel and alloy—Determination of copper—2,2′-Biquinoline spectrophotometric method GB/T 223.92-2023 Iron, steel and alloy—Determination of lanthanum, cerium, praseodymium, neodymium and samarium content—Inductively coupled plasma mass spectrometry GB/T 549-1996 Electro-welded anchor chains GB/T 549-2008 Electro-welded anchor chains GB/T 549-2017 Electro-welded anchor chains GB/T 2272-2009 Ferrosilicon GB/T 2272-2020 Ferrosilicon GB/T 2988-2004 High alumina brick GB/T 2988-2012 High alumina bricks GB/T 2988-2023 High alumina bricks GB/T 3649-2008 Ferromolybdenum GB/T 3795-1996 Ferromanganese GB/T 3795-2006 Ferromanganese GB/T 3795-2014 Ferromanganese GB/T 3863-1995 Industrial oxygen GB/T 3863-2008 Industrial oxygen GB/T 3863-2025 Industrial oxygen GB/T 3864-1996 Industrial nitrogen GB/T 3864-2008 Industrial nitrogen GB/T 3864-2025 Industrial nitrogen GB/T 4139-2004 Ferrovanadium GB/T 4139-2012 Ferrovanadium GB/T 4223-1996 Iron and steel scraps GB/T 4223-2004 Iron and steel scraps GB/T 4223-2017 Iron and steel scraps GB/T 4336-2002 Standard test method for spark discharge atomic emission spectrometric analysis of carbon and low-Alloy steel(routine method) GB/T 4336-2016 Carbon and low-alloy steel—Determination of multi-element contents—Spark discharge atomic emission spectrometric method (routine method) GB/T 4842-1995 Pure argon GB/T 4842-2006 Argon GB/T 4842-2017 Argon GB/T 5611-1998 Foundry terminology GB/T 5611-2017 Foundry terminology GB/T 5683-2008 Ferrochromium GB/T 5683-2024 Ferrochromium GB/T 6414-1999 Castings—System of dimensional tolerances and machining allowances GB/T 6414-2017 Castings—Dimensional tolerances and geometrical tolerances and machining allowances GB/T 6516-1997 Electrolytic nickel GB/T 6516-2010 Electrolytic nickel GB/T 6516-2025 Electrolytic nickel GB/T 8918-1996 Steel wire ropes GB/T 8918-2006 Steel wire ropes for important purposes GB/T 11261-1989 Methods for chemical analysis of high carbon chromium bearing steel The pulse heating inert gas fusion-infra red absorption method for the determination of oxygen content GB/T 11261-2006 Steel and iron—Determination of oxygen content—The pulse heating inert gas fusion-infra-red absorption method GB/T 20118-2006 Steel wire ropes for general purpose GB/T 20118-2017 Steel wire ropes for general purposes GB/T 20118-2025 General technical requirements for steel wire ropes GB/T 25049-2010 Ferronickel GB/T 25049-2024 Ferronickel 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 GB/T 22589-2008 Magnesia carbon brick GB/T 22589-2017 Magnesia carbon bricks GB/T 39733-2020 Recycling iron-steel materials GB/T 39733-2024 Recycling iron-steel materials AQ 2001-2018 Steelmaking safety regulations AQ 2001-2004 Steelmaking safety regulations JB/T 3261-2013 LG series steel drum type and basic parameters JB/T 3261-1999 JBT 3261-1999 LG series steel drum type and basic parameters JB/T 7333-2013 Manually operated lifting clamp JB/T 7333-1994 Crane-type clamp YB/T 042-1993 metallurgical lime YB/T 042-2014 metallurgical lime YB/T 070-1995 steel ingot mold YB/T 192-2015 Carbon-increasing agent for steel making YB/T 192-2001 Carbon-increasing agent for steel making YB/T 5049-1999 Slide gate bricks YB/T 5049-2019 YB/T 5049-2019 skateboard brick YB/T 5049-2009 YB/T 5049-2009 skateboard brick YB/T 5051-1997 Calcium silicon alloy YB/T 5051-2016 silicon calcium alloy YB/T 5051-2007 Calcium silicon alloy YB/T 5217-2019 Fluorite YB/T 5217-2005 Fluorspar YB/T 5296-2011 Steelmaking pig iron YB/T 5296-2006 Pig iron for steelmaking