Brazing Rod Manufacturer,Supplier and Exporter in India
Product Code : EL-MWLE-13046
Jlab Export is a leading Brazing Rod Manufacturer,and suppliers in India
This brazing rod is a phosphor-copper alloy of 92.9% copper and 7.1% phosphorus, used to join copper pipe and fittings in refrigeration and air conditioning work. On a copper-to-copper joint the phosphorus does the work of a flux, so no flux is needed. Each stick measures 0.050 in by 1/8 in, and the rods come in a tube of 28.
Specifications
| Alloy | Phosphor-copper |
| Composition | 92.9% copper, 7.1% phosphorus |
| Stick section | 0.050 in x 1/8 in |
| Pack quantity | Tube of 28 sticks |
| Minimum order quantity | 10 packs |
| Dispatch time | Usually 3–5 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Brazing Practicals in the Refrigeration Lab
A standard ITI or diploma exercise is a copper-to-copper joint on a short pipe run. Students cut the pipe square with a Tube Cutter, ream out the burr with the Reamer and clean the joint area until it is bright. The pipe is pushed into an Elbow Fitting and the joint is heated evenly with the Gas Welding Plant. The rod is then touched to the hot joint, and the melted alloy runs into the gap.
During brazing, a slow flow of nitrogen is passed through the pipe to stop black oxide scale forming inside. The Nitrogen Flow Regulator Meter For Brazing sets that flow. The finished joint is then pressure tested with the Nitrogen Pressure Test Kit and checked with Bubble Solution For Leak Detection.
Frequently Asked Questions
Do I need flux with this rod?
Not on copper to copper. The phosphorus in the alloy cleans the joint as it melts, so the rod is used bare on copper pipe and copper fittings. Joints to brass or bronze fittings need a brazing flux brushed on first.
Can this rod be used on steel or cast iron?
No. Phosphor-copper alloys form brittle joints on steel, cast iron and nickel alloys, so they are kept for copper and copper alloys. Steel parts are joined with a bronze rod and flux, such as the bronze Brazing Rod.
Why pass nitrogen through the pipe while brazing?
Copper heated in air grows a black oxide scale on its inside wall. In a refrigeration circuit those flakes can block the capillary tube or expansion valve and load up the filter drier. A slow nitrogen flow pushes the air out, so the bore stays clean.
How can I tell the joint is properly filled?
Heat the pipe and fitting, not the rod, until the alloy melts on contact with the copper. A good joint shows a thin, even ring of alloy all round the mouth of the fitting. A nitrogen pressure test then shows whether it is sealed.
What do the size figures mean?
Each stick measures 0.050 in by 1/8 in across its section. The sticks are packed 28 to a tube, and one tube is the unit you order.
Other Pipe Joining Supplies
- Tee Fitting (copper)
- Copper Pipe (6 mm and 8 mm rolls)
- Copper Fitting Brush
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 5 November 2026
