铁工制造，安装工立，吊起，安装，维修和服务于结构铁制品，预制混凝土，混凝土增强材料，幕墙，装饰铁和其他用于建筑，桥梁，公路，大坝和其他结构和设备建设的金属。他们受雇于建设铁工承包商。
Ironworkers fabricate, erect, hoist, install, repair and service structural ironwork, precast concrete, concrete reinforcing materials, curtain walls, ornamental iron and other metals used in the construction of buildings, bridges, highways, dams and other structures and equipment. They are employed by construction ironwork contractors.
结构金属和钣金制造者及装配工为建筑，桥梁，储罐，塔，锅炉，压力容器和其他类似结构和产品制造，组装，安装钢或其他金属部件。他们受雇于钣金，结构钢和钣金制造工厂和重型机械制造和造船企业。
Structural metal and platework fabricators and fitters fabricate, assemble, fit and install steel or other metal components for buildings, bridges, tanks, towers, boilers, pressure vessels and other similar structures and products. They are employed in structural steel, boiler and platework fabrication plants and by heavy machinery manufacturing and shipbuilding companies.
锅炉工制造，组装，架设，测试，维护和修理锅炉，容器，储罐，塔器，换热器和其他重型金属结构。他们受雇于锅炉制造，制造，造船，建筑，发电及类似的工业场所。
Boilermakers fabricate, assemble, erect, test, maintain and repair boilers, vessels, tanks, towers, heat exchangers and other heavy-metal structures. They are employed in boiler fabrication, manufacturing, shipbuilding, construction, electric power generation and similar industrial establishments.
钣金工人制造，装配，安装和维修钣金产品。他们受雇于钣金加工车间，钣金产品制造企业，钣金工程承建商以及各工业部门。
Sheet metal workers fabricate, assemble, install and repair sheet metal products. They are employed by sheet metal fabrication shops, sheet metal products manufacturing companies, sheet metal work contractors and various industrial sectors.
工具和模具制造商，使用各种金属，合金和塑料，修理和修改需要精确尺寸的定做，原型或专用工具，模具，工模，夹具和量具。他们主要受雇于制造业，如汽车，飞机，金属制造，电气机械及塑料，以及工具和模具，模具制造和加工车间。此单元组还包括金属打样和金属模具制造商。
Tool and die makers make, repair and modify custom-made, prototype or special tools, dies, jigs, fixtures and gauges using various metals, alloys and plastics which require precise dimensions. They are employed primarily in manufacturing industries such as automobile, aircraft, metal fabrication, electrical machinery and plastics, and in tool and die, mould making and machine shops. This unit group also includes metal patternmakers and metal mould makers.
机械师设置和操作各种机床，切割或研磨金属，塑料或其他材料来制作或修改精确尺寸的零件或产品。加工和模具检察员检查加工零件和模具，以保持质量控制标准。他们受雇于机械，设备，汽车，汽车零部件，飞机及其他金属制品制造企业和机器加工车间。
Machinists set up and operate a variety of machine tools to cut or grind metal, plastic or other materials to make or modify parts or products with precise dimensions. Machining and tooling inspectors inspect machined parts and tooling in order to maintain quality control standards. They are employed by machinery, equipment, motor vehicle, automotive parts, aircraft and other metal products manufacturing companies and by machine shops
本单元组包括拥有并经营自己的业务的屋顶，砖石，绘画和其他建筑行业承包商及其他未分类的。本单元组监事会监督和协调下列小组中，各种技工，安装工，维修工和服务商的活动：砌体和抹灰交易[728]728，其他建筑业[729]729和其他安装，维修和服务商[744]744。他们受雇于单元组描述的广泛的场所，工作场所。此单元组还包括预制产品安装及服务承办商和业主的一些维修和服务机构。
This unit group includes roofing, masonry, painting and other construction trade contractors, not elsewhere classified, who own and operate their own business. Supervisors in this unit group supervise and co-ordinate the activities of various tradespersons, installers, repairers and servicers classified in the following minor groups: Masonry and Plastering Trades (728), Other Construction Trades (729) and Other Installers, Repairers and Servicers (744). They are employed by a wide range of establishments; places of employment are indicated in the unit group descriptions. This unit group also includes prefabricated product installation and service contractors and proprietors of some repair and service establishments.
本单元组包括拥有和经营自己企业的木工和细木工行业承建商。本组还包括监督和协调以下单元组活动的监事：木匠[7271](7271)和家具[7272](7272)的工人。他们受雇于建筑公司，木工承包商，工业场所的维修部门，定制家具和夹具的制造或维修公司。
This unit group includes carpentry and cabinetmaking trade contractors who own and operate their own businesses. This group also includes supervisors who supervise and co-ordinate the activities of workers classified in the following unit groups: Carpenters (7271) and Cabinetmakers (7272). They are employed by construction companies, carpentry contractors, maintenance departments of industrial establishments, and custom furniture and fixture manufacturing or repair companies.
此单元组包括管道和其他管道安装行业承包商，其拥有并经营自己的企业。本组还包括主管，其监督和协调下列单元组的工人的活动：管道工[7251]（7251），蒸汽管道工人，管道装配和自动喷水灭火系统安装工[7252]（7252）和燃气钳工[7253]（7253）。他们受雇于建筑公司，机械，管道和管道安装行业承包商和维护部门的工业，商业和制造业机构。
This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses. This group also includes supervisors who supervise and co-ordinate the activities of workers classified in the following unit groups: Plumbers [7251](7251), Steamfitters, Pipefitters and Sprinkler System Installers [7252](7252) and Gas Fitters [7253](7253). They are employed by construction companies, mechanical, plumbing and pipefitting trade contractors and maintenance departments of industrial, commercial and manufacturing establishments.
本单元组包括拥有和经营自己企业的电信，电力等行业工程的承建商。本组还包括监督和协调下列单元组的工人活动的监事：电工[7241](7241)，工业电工[7242](7242)，电力系统电工[7243](7243)，电力线和电缆工人[7244](7244)，通信线路及电缆工人[7245](7245)，电信安装和维修工人[7246](7246)和有线电视服务和维修技术人员[7247](7247)。他们可任职的机构广泛，工作场所在上述单元组中已经描述。
This unit group includes telecommunications and electrical trade contractors who own and operate their own businesses. This group also includes supervisors who supervise and co-ordinate the activities of workers classified in the following unit groups: Electricians (7241), Industrial Electricians (7242), Power System Electricians (7243), Electrical Power Line and Cable Workers (7244), Telecommunications Line and Cable Workers (7245), Telecommunications Installation and Repair Workers (7246) and Cable Television Service and Maintenance Technicians (7247). They are employed in a wide range of establishments; places of employment are indicated in the above unit group descriptions.