HVAC Tube Bending for OEM Equipment Manufacturers

WHAT CURTIS DOES FOR HVAC

Curtis Products provides hvac tube bending and fabrication for equipment OEMs — the coils, refrigerant lines, and formed assemblies that heating, ventilation, and refrigeration equipment is built from. We bend copper, aluminum, steel, and stainless tubing from 1/8 inch to 3 inch OD, then form, weld, braze, and finish it into complete assemblies. Whether you are building a condenser coil, a line set, or a routed run of hvac tubing that has to clear other components inside a cabinet, the bend has to hold tolerance so the part seats and seals the first time.

HVAC and refrigeration parts live or die on clean joints and repeatable geometry. A coil that is a few degrees off will not nest; a refrigerant line with a wrinkled bend restricts flow. That is why hvac tube bending is the whole job here, not a step we rush through to get to the next one.

PROCESS & CAPABILITIES

Every hvac tube bending job starts with a print, or a sample part if a print does not exist yet. We run manual fixture bending, power fixture bending, and CNC rotary bending on copper, aluminum, steel, and stainless tubing, matching the method to the tolerance, radius, wall, and volume the part calls for. Aluminum tube bending and copper tube bending services are core to HVAC work — both metals are light, conduct heat well, and are what most coils and refrigerant lines are made from — and both run through whichever bending method holds the wall without collapsing the tube.

From the bend, HVAC assemblies often move into end forming — ORFS, flaring, flanging, swaging, sizing, expanding, coining — so each tube seats against its fitting or braze joint. Our welding and brazing group joins mid-to-large diameter steel, stainless, and aluminized steel tube with manual and robotic MIG welding plus torch, hand, and induction brazing, every process built to meet or exceed AWS requirements. When a part needs corrosion protection or a finish, options include zinc plating, Galfan, e-coating, powder coating, anodizing, tin dip coating, phosphate coating, and autophoretic plating. Because every operation sits under one roof, an hvac tubing assembly goes from raw tube to finished part without leaving the building.

WHY OEMS PICK A SHOP THAT'S BEEN DOING THIS SINCE THE 1950S

Curtis Products has built formed tubing assemblies since the fall of 1959, when Curtis Heckaman won a contract to supply short-run, formed tubing after no other manufacturer could meet the customer's quality and delivery requirements. The company is now in its third generation of family management, ISO 9001:2015 certified, and runs a quality process built around prevention — receiving, in-process, and final inspections that document compliance before a part ships.

For an HVAC OEM, that discipline shows up as on-time delivery, design expertise, and competitive pricing on parts where a bad joint means a leak in the field. Launch planning tools like Team Feasibility Commitment, Design Review, and Mistake Proofing get applied before a new part reaches full production, inside 254,000 square feet of dedicated plant space in South Bend, Indiana. Curtis serves OEMs across the Chicagoland, South Bend, Detroit, Milwaukee, and Cincinnati areas and beyond, where the bend is only the visible part of what has to go right.

HVAC TUBE BENDING MATERIALS: COPPER AND ALUMINUM

Copper and aluminum are the metals most HVAC and refrigeration parts rely on, and both are standard metals on our floor — we bend copper, aluminum, steel, and stainless tubing from 1/8 inch to 3 inch OD. Refrigeration tubing fabrication typically means copper or aluminum tube bent and end-formed into line sets and coils; we build those from the same metals we bend for every other HVAC job. If your part calls for a specialty alloy or a temper we have not listed here, ask during quoting — Curtis engineers confirm material, wall, and tolerance against your print rather than promising a spec we cannot hold. If you need the fabrication side without the bending, see our tube fabrication services; for the hydronic cousin of HVAC work, see radiant heat tubing.