121 GB/T 14223-1993 内燃机活塞环 梯形环和楔形环 Internal combustion engines--Piston rings--Keystone rings and half keystone rings
122 GB/T 14415-1993 锅炉用水和冷却水分析方法 固体物质的测定 Analysis of water used in boiler and cooling system--Determination of solids matter
123 GB/T 14416-1993 锅炉蒸汽的采样方法 Methods for sampling boiler steem
124 GB/T 14417-1993 锅炉用水和冷却水分析方法 全硅的测定 Analysis of water used in boiler and cooling system--Determination of total silica

125 GB/T 14418-1993 锅炉用水和冷却水分析方法 铜的测定 Analysis of water used in boiler and cooling system--Determination of copper
126 GB/T 14419-1993 锅炉用水和冷却水分析方法 碱度的测定 Analysis of water used in boiler and cooling system--Determination of alkalinity
127 GB/T 14420-1993 锅炉用水和冷却水分析方法 化学耗氧量的测定 重铬酸钾快速法 Analysis of water used in boiler and cooling system--Determination of chemical oxygen demand--Rapid method with potassium dichromate 

128 GB/T 14421-1993 锅炉用水和冷却水分析方法 聚丙烯酸的测定 比浊法 Analysis of water used in boiler and cooling system--Determination of polyacrylic acid--Turbidimetric method
129 GB/T 14422-1993 锅炉用水和冷却水分析方法 苯骈三氮唑的测定 紫外分光光度法 Analysis of water used in boiler and cooling system--Determination of benzotriazole--Ultraviolet spectrophotometry
130 GB/T 14423-1993 锅炉用水和冷却水分析方法 2-巯基苯骈噻唑的测定 紫外分光光度法 Analysis of water used in boiler and cooling system--2-Mercaptobenzothiazole--Ultraviolet spectrophotometry

131 GB/T 14424-1993 锅炉用水和冷却水分析方法 余氯的测定 Analysis of water used in boiler and cooling system--Determination of free chlorine residuals
132 GB/T 14425-1993 锅炉用水和冷却水分析方法 硫化氢的测定 分光光度法 Analysis of water used in boiler and cooling system--Determination of sulfurated hydrogen--Spectrophotometry
133 GB/T 14426-1993 锅炉用水和冷却水分析方法 亚硫酸盐的测定 Analysis of water used in boiler and cooling system--Determination of sulfite

134 GB/T 14427-1993 锅炉用水和冷却水分析方法 铁的测定 Analysis of water used in boiler and cooling system--Determination of iron
135 GB/T 14792-1993 锅炉水处理设备术语 Boiler water treatment equipments--Terminologies
136 GB/T 15371-1994 曲轴轴系扭转振动的测量与评定方法 Torsional vibration of crankshaft systems--Measurement and evaluation method
137 GB 15739-1995 小型汽油机噪声限值 Noise limitation of small gasoline engine
138 GB/T 16507-1996 固定式锅炉建造规程 Rules for construction of stationary boilers

139 GB/T 16508-1996 锅壳锅炉受压元件强度计算 Strength calculation of pressure parts for shell boilers
140 GB/T 5770-1997 柴油机柱塞式喷油泵总成 技术条件 Technical requirements for jerk fuel injection pump
141 GB/T 17368-1998 在用喷油泵试验台的校验 Calibrating rule of using fuel injection pump test-bench
142 GB/T 12145-1999 火力发电机组及蒸汽动力设备水汽质量 Quality criterion of water and steam for generating unit and steam power equipment