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  2. Pipefitter - Wikipedia

    en.wikipedia.org/wiki/Pipefitter

    They use surveyor’s equipment to ensure the trenches have the proper slope and install the pieces of pipe in the trenches, joining the ends with cement, glue, or welding equipment. Using an always-open or always-closed valve called a tap, pipe layers connect them to a wider system and bury the pipes.

  3. Millwright - Wikipedia

    en.wikipedia.org/wiki/Millwright

    However, the exact duties of a millwright vary depending on whether they are unionized or not, with union rules typically being more restrictive than non-union situations, which may have their own job description. On a typical job millwrights: [13] read diagrams and schematic drawings and service manuals to determine work procedures

  4. Welder - Wikipedia

    en.wikipedia.org/wiki/Welder

    A welder is a person or equipment that fuses materials together.The term welder refers to the operator, the machine is referred to as the welding power supply.The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc.) or varieties of plastic or polymer.

  5. Welding - Wikipedia

    en.wikipedia.org/wiki/Welding

    Welding a handle onto a pitcher can usually be done with relative ease. However, when welding a tube to another tube, a combination of blowing and suction, and pressing and pulling is used to ensure a good seal, to shape the glass, and to keep the surface tension from closing the tube in on itself. Sometimes a filler rod may be used, but ...

  6. Metal fabrication - Wikipedia

    en.wikipedia.org/wiki/Metal_fabrication

    Workers welding in parking garage. Welding is the main focus of steel fabrication. [8] Formed and machined parts are assembled and tack-welded in place, then rechecked for accuracy. If multiple weldments have been ordered, a fixture may be used to locate parts for welding. A welder then finishes the work according to engineering drawings (for ...

  7. List of construction trades - Wikipedia

    en.wikipedia.org/wiki/List_of_construction_trades

    Ironworker (or steel erector, often includes welder), erects or dismantles structural steel frames. Structural steel installation is usually crane-assisted. Workers rely on mobile, elevated platforms or scissor lifts. Ironworkers bolt the steelwork together using various tools, power tools and manual tools.

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