UA Local 100 Trades

United Association (UA) Local 100 proudly serves the Dallas metro-area by providing our signatory contractors with the most highly skilled and highly trained pipes trades workforce.

Below you will find a summary of the trades but the opportunity to learn more about each trade and the areas in which our members work in the industry.


Pipefitters fabricate, assemble, install, maintain and repair piping systems that transport all types of fluids, slurries and gasses in the residential, commercial and industrial sectors. The work of a pipefitter is diverse, as these tradesmen can work in industries such as oil and gas, nuclear power and manufacturing. Pipefitters often work on high-pressure and high-temperature systems. The job requires a thorough knowledge of scientific principles and a strict adherence to safety guidelines.

Pipe Welders

Pipe welders cut and join a variety of pipes – from steel, cast iron and plastic to exotic metals. These materials can be found on complex and specialized pipings systems found on projects ranging from gas distribution and power plants to pharmaceutical factories and refineries. Experts estimate there will be a shortage of pipe welders in North America that could number in the hundreds of thousands.


Plumbers install drinking water, waste and ventilating systems. These systems are found in all facilities including homes, offices, schools, hospitals, and manufacturing facilities. The work plumbers perform is essential to the health and safety of all people. The demand for plumbers is expected to increase in the coming years, with a growing focus on green technologies, water conservation and energy efficiency.

(HVACR) Service Technicians

Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) Service Technicians install, maintain and repair plumbing, heating, ventilating, air conditioning and refrigeration systems in the residential, commercial and industrial sectors. These technicians also perform essential work to improve energy efficiency. The demand for this expertise is predicted to grow by more than 30 percent in the next several years.