Tube Coiling

G & J Steel & Tubing, Inc. manufactures coiled tubular parts using several methods including our 6-axis CNC bender, a specially designed coil machine, and a serpentine bender. We can produce any shaped coil including helix, box, double, serpentine, and irregular shaped coils.

Our high quality coils are used extensively in heating, cooling and mechanical applications. We have made heat exchanger coils, condenser coils, oxygen warming coils, oil cooling coils and beverage coils. End forming and tube fittings (compression or flare nut) can be added to any coil shape.

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Tube Coiling Compression Specifications

Outside Diameter

0.125 to 1.000 Inch

Wall Thickness

0.010 to 0.125 Inch

Coil Diameter

Maximum 31″ Coil O.D.
Minimum – CLR = 4 to 5 x O.D. based upon material and wall

Workable Materials

Aluminum
Brass
Carbon Steel

Copper
Nickel & Ni Alloys
Stainless Steel

Workpiece Type

Coils
Straight Lengths

Tolerance

± .030″
Tighter tolerance available upon request

Production Rate

10 to 700 pieces/hour

Production Rate Variables

OD, blank length, number of bends

Cleanliness

No lubrication used for most applications

Comment

CLR at least 4 to 1
Leg must be outside coil for automated coiling – leg inside design requires manual coiling

Equipment

6 Axis CNC AutoBend
Manual Coiling Machine
Serpentine Bender

Industries Served

Aerospace & Aircraft
Air Compressor
Air Conditioner
Automotive
Beverage
Electronics

Engine
Gas & Appliance
Heat Exchanger
OEM
Utility (Power/Sewer/Water)

Tube Coiling Lathe Style Specifications

Outside Diameter

0.125 to 0.750 Inch

Wall Thickness

0.010 to 0.125 Inch

Coil Diameter

Max = 6″O.D. Inch
Minimum = CLR 2 x O.D. Inch

Workable Materials

Aluminum
Brass
Carbon Steel
Copper
Cu Ni

Kovar
Nickel & Ni Alloys
Rodar
Stainless Steel

Tolerance

± .020″
Tighter tolerance available upon request

Production Rate

25 to 200 pieces/hour

Production Rate Variables

OD, blank length, number of bends

Cleanliness

Lubricant may need to be removed

Comment

CLR at least 2 to 1. Leg inside or outside.

Equipment

Lathe Style Custom Coiling Machine

Industries Served

Aerospace, Air Craft
Air Compressor
Air Conditioning
Beverage
Electronic
Engine

Gas & Appliance
Heat Exchanger
Medical
OEM
Utility (Power/Sewer/Water)