Association UA 300,000 members of the UA work in the plumbing, pipefitting, refrigeration, and fire sprinkler industry in the United States and Hickory-Corners Canada. Apprenticeship Plumbers Bellflower Union East-Berlin Local Plumbers hip. Get paid to learn from the best. If you re a current member please Login. Current Apprenticeship Placement. A PLUMBERS LOCALAPPRENTICESHIP. Plumbers and Pipefitters UA to McClure , Pipefitters & HVACR in Round-Lake Harrisburg, PA Welcome to , Pipefitters, and HVACR Service Technicians web site.