91 GB/T 12215-1990 熔模铸造用铝矾土砂、粉 Bauxite sand and flour for investment casting
92 GB/T 12216-1990 铸造用合脂粘结剂 The residue from distillation of synthetic fatty acids as binder for foundry
93 GB/T 12361-1990 钢质模锻件 通用技术条件 General specification of steel die forgings
94 GB/T 12362-1990 钢质模锻件 公差及机械加工余量 Tolerances and machining allowances of steel die forgings
95 GB/T 12363-1990 锻件功能分类 Classification of forging functions
96 GB/T 12469-1990 焊接质量保证 钢熔化焊接头的要求和缺陷分级 Quality assurance of welding—Requirement for fusion welding joint of steel and classification for imperfection
97 GB/T 12470-1990 低合金钢埋弧焊用焊剂 Fluxes for the submerged arc welding of low alloy steel
98 GB/T 12603-1990 金属热处理工艺分类及代号 Classification and designation on metal heat treatment
99 GB 12935-1991 焊条烘干炉运行能耗标准 Energy consumption standard in operation of covered electrode furnace
100 GB/T 13311-1991 锅炉受压元件焊接接头机械性能试验方法 Boiler pressure parts—Mechanical test for welded joints
101 GB/T 13320-1991 钢质模锻件 金相组织评级图及评定方法 Metallographic grading atlas and assessing method for steel die forgings
102 GB/T 13450-1992 对接焊接头宽板拉伸试验方法 Method of wide plate tension test for butt welded joint
103 GB/T 13679-1992 锰基钎料 Manganese base brazing filler metals
104 GB/T 13814-1992 镍及镍合金焊条 Nickel and nickel alloy covered welding electrodes
105 GB/T 13815-1992 铝基钎料 Aluminium base brazing filler metals
106 GB/T 13816-1992 焊接接头脉动拉伸疲劳试验方法 Test method for pulsed tensile fatigue of welded joints
107 GB/T 13817-1992 对接接头刚性拘束焊接裂纹试验方法 Method of rigid restraint cracking test for welding butt joint
108 GB/T 13818-1992 压铸锌合金 Zinc die-casting alloys
109 GB/T 13819-1992 铜合金铸件 Copper alloy castings
110 GB/T 13820-1992 镁合金铸件 Magnesium alloy castings
111 GB/T 13821-1992 锌合金压铸件 Zinc alloy die castings
112 GB/T 13822-1992 压铸有色合金试样 Test specimens for non ferrous diecasting alloys