Bending Spring Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-9363
Jlab Export is a leading Bending Spring Manufacturer,and suppliers in India
A bending spring supports the wall of a soft copper pipe from the inside while it is bent by hand. The pipe then curves smoothly instead of kinking or flattening. This internal spring is made of spring steel and is sized for 1/2 in copper pipe.
Specifications
| Type | Internal bending spring |
| Pipe size | 1/2 in copper pipe |
| Material | Spring steel |
| Use | Bending copper pipe without kinking or crushing |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Practice with the Bending Spring
A typical ITI or polytechnic exercise is a right-angle bend and an offset in a length of soft copper pipe. Students mark the start of each bend, push the spring in until it spans the mark, and bend the pipe slowly over the knee. They bend slightly past the angle, ease it back to free the coils, and draw the spring out. The finished bends are then compared with bends made using an external spring from the Spring Tube Bender set.
Once the bends pass inspection, the pipe end is finished for a joint. The 45 Degree Flaring And Swaging Tool flares or swages 1/2 in tube, so students can fit a flare nut or form a socket for brazing. Teachers use the exercise to show why soft copper must be supported in a bend, and what a kinked pipe does to refrigerant flow.
Frequently Asked Questions
How is the spring taken out after bending?
Bend the pipe a little past the angle you need, then ease it back. This loosens the coils so the spring slides out. For a bend far from the pipe end, tie a length of cord to the spring before pushing it in.
Can it be used on hard copper pipe?
Only after annealing. Hard-drawn copper resists bending and can split, so heat the bend area to a dull red and let it cool first. Soft annealed coil pipe bends directly with the spring in place.
What is the difference between internal and external springs?
An internal spring like this one goes inside the pipe, so the bend must be within reach of an open end. An external spring slides over the pipe and can be used anywhere along a length.
Will the spring fit other pipe sizes?
No. It works only as a close fit in the bore, and it is sized for 1/2 in copper pipe. In a larger pipe it sits loose and the wall can still collapse, so each pipe size needs its own spring.
How tight a bend can be made by hand?
Keep the radius generous and bend gradually rather than in one pull. Too tight a bend thins the outer wall and wrinkles the inner wall, even with the spring in place.
Other Tube Bending and Flaring Tools
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Last updated: 5 November 2026
