241 GB/T 13756-1992 三足式离心机型式和基本参数 Three-column centrifuge--Types and basic parameters
242 GB/T 13928-1992 微型往复活塞空气压缩机 Reciprocating piston micro air compressor
243 GB/T 13929-1992 水环真空泵和水环压缩机试验方法 Methods of testing for water-ring vacuum pumps and compressors
244 GB/T 13930-1992 水环真空泵和水环压缩机气量测定方法 Methods for the measurement of volume flow of gas of water-ring vacuum pump and compressor
245 GB/T 13931-1992 电除尘器 性能测试方法 Methods of performance tests for electrostatic precipitators
246 GB/T 13933-1992 小型贯流式通风机 Miniature cross-flow fan
247 GB/T 14173-1993 平面钢闸门 技术条件 Specification for hydraulic flat steel gates
248 GB 14193-1993 液化气体气瓶充装规定 Rules for filling of liquefied gas cylinders
249 GB 14194-1993 永久气体气瓶充装规定 Rules for filling of permanent gas cylinders
250 GB/T 14405-1993 通用桥式起重机 General purpose overhead cranes
251 GB/T 14406-1993 通用门式起重机 General purpose gantry cranes
252 GB/T 14407-1993 通用桥式和门式起重机司机室 技术条件 Specification for cabins of overhead travelling cranes and portal bridge cranes for general purposes
253 GB/T 14521.1-1993 运输机械术语 运输机械类型 Terms of conveying machinery--Types of conveying machinery
254 GB/T 14521.2-1993 运输机械术语 主要参数 Terms of conveying machinery--Main parameters
255 GB/T 14521.3-1993 运输机械术语 装置和零部件 Terms of conveying machinery--Unit and component parts
256 GB/T 14521.4-1993 运输机械术语 带式输送机 Terms of conveying machinery--Belt conveyor
257 GB/T 14521.5-1993 运输机械术语 埋刮板输送机 Terms of conveying machinery--En masse conveyor
258 GB/T 14521.6-1993 运输机械术语 板式输送机 Terms of conveying machinery--Slat conveyor
259 GB/T 14521.7-1993 运输机械术语 螺旋输送机 Terms of conveying machinery--Screw conveyor