Metal Works Corporation produces all types of coils used in heating and cooling systems and many other commercial applications. We maintain strict control of the dimensional tolerances specified by our customers during the entire coiling process. • Any pipe or tube alloy • Helical coils • Tapered and flat spiral coils • Reciprocating (serpentine) coils • Pancake coils • Nested coils • Half-pipe coils • Single and multiple pass • ASME certified pipe coils to 8" O.D. • Tube bundles • Prototype and production runs