本单元组包括供暖，制冷，空调，水车和电梯和其他设备安装的承包商和机械行业内拥有和经营自己企业的承建商。本组还包括监督和协调以下小组内工人的活动：机械及运输设备机械（除汽车）[731](731)，汽车服务技术员[732](732)和其他机械[733](733)。他们受雇于广泛的场所，工作场所在以上小组的单元组中已经描述。

This unit group includes heating, refrigeration, air conditioning, millwrighting and elevator and other equipment installation and mechanic trades contractors who own and operate their own businesses. This group also includes supervisors who supervise and co-ordinate the activities of workers classified in unit groups within the following minor groups: Machinery and Transportation Equipment Mechanics (Except Motor Vehicle) (731), Automotive Service Technicians (732) and Other Mechanics (733). They are employed in a wide range of establishments; places of employment are indicated in the unit group descriptions of the above minor groups.

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地板覆盖安装工在住宅，商业，工业和机构建筑内安装地毯，木地板，油毡，乙烯和其他弹性地板覆盖物。他们受雇于建筑公司，地板覆盖承建商和地毯店，也可能是自雇人士。

Floor covering installers install carpet, wood, linoleum, vinyl and other resilient floor coverings in residential, commercial, industrial and institutional buildings. They are employed by construction companies, floor-covering contractors and carpet outlets, or they may be self-employed.

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7294 画家和装饰者者（室内装修者除外）Painters and decorators (except interior decorators)

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从事绝缘工作的工人对管道，空气处理，加热，冷却和制冷系统，管道设备和压力容器，建筑物及其他构筑物的墙壁，地板和天花板使用保温材料，以防止或减少冷，热，声音或火的流逝。他们受雇于建筑公司和绝缘承建商，或者有可能成为自雇人士。

Insulators apply insulation materials to plumbing, air-handling, heating, cooling and refrigeration systems, piping equipment and pressure vessels, and walls, floors and ceilings of buildings and other structures, to prevent or reduce the passage of heat, cold, sound or fire. They are employed by construction companies and insulation contractors, or they may be self-employed.

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玻璃匠切割，调试，安装和更换住宅，商业和工业建筑，建筑物外墙上和其他结构以及家具等产品的玻璃。他们受雇于建筑玻璃安装承包商，零售服务和维修店和玻璃加工车间，或者有可能成为自雇人士。

Glaziers cut, fit, install and replace glass in residential, commercial and industrial buildings, on exterior walls of buildings and other structures and in furniture and other products. They are employed by construction glass installation contractors, retail service and repair shops and glass fabrication shops, or they may be self-employed.

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盖屋顶的人安装，维修或更换平屋顶和 倾斜的屋顶上的瓦片，不结实的或其他屋顶砖瓦。 挤压操作工安装和更换倾斜的屋顶上的木瓦，瓦片及类似覆盖物。他们受雇于屋面和总承包商，或者有可能成为自雇人士。

Roofers install, repair or replace flat roofs and shingles, shakes or other roofing tiles on sloped roofs. Shinglers install and replace shingles, tiles and similar coverings on sloped roofs. They are employed by roofing and general contractors, or they may be self-employed.

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泥水工在内部和外部的墙壁，天花板和建筑物分区上进行完善，并维修和恢复石膏或类似的材料，使其产生平滑或装饰性表面。石膏板安装工和整理工安装并完成石膏板片及各类吊顶系统。泡沫工为天花板系统，室内和外墙和建筑分区安装支持框架。他们受雇于建筑公司，抹灰，砌墙及车床加工承包商，或者有可能成为自雇人士。

Plasterers apply finish, and maintain and restore plaster or similar materials, on interior and exterior walls, ceilings and building partitions to produce plain or decorative surfaces. Drywall installers and finishers install and finish drywall sheets and various types of ceiling systems. Lathers install support framework for ceiling systems, interior and exterior walls and building partitions. They are employed by construction companies and by plastering, drywalling and lathing contractors, or they may be self-employed.

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砖瓦工用陶瓷，大理石和采石场瓷砖，马赛克或水磨石来覆盖内墙和外墙，地板和天花板。他们受雇于建设公司和砖石承建商，或者他们可能成为自雇人士。

Tilesetters cover interior and exterior walls, floors and ceilings with ceramic, marble and quarry tile, mosaics or terrazzo. They are employed by construction companies and masonry contractors, or they may be self-employed.

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混凝土整理工将新浇混凝土弄光滑，应用固化或表面处理，以及安装，维护和恢复各种砖石结构，如地基，地板，天花板，人行道，道路，庭院和高层建筑。他们受雇于建筑公司，水泥和混凝土承包商和预制混凝土产品的制造商，或者他们可能成为自雇人士。

Concrete finishers smooth and finish freshly poured concrete, apply curing or surface treatments and install, maintain and restore various masonry structures such as foundations, floors, ceilings, sidewalks, roads, patios and highrise buildings. They are employed by construction companies, cement and concrete contractors and manufacturers of precast concrete products, or they may be self-employed.

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瓦工按照图纸和规格，铺砌砖块，混凝土块，石头和其他类似材料来建造或修复墙壁，拱门，烟囱，壁炉和其他结构。他们受雇于建筑公司和砌砖工程承办商，或者他们可能成为自雇人士。

Bricklayers lay bricks, concrete blocks, stone and other similar materials to construct or repair walls, arches, chimneys, fireplaces and other structures in accordance with blueprints and specifications. They are employed by construction companies and bricklaying contractors or they may be self-employed.

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