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  • October 27, 2025
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Heavy castings such as turbine casings, engine blocks, gearbox housings, and cylinder heads often develop cracks due to mechanical stress, accidents, or fatigue. Traditionally, repairing these cast iron components through welding can introduce heat-related distortion, shrinkage, and weakened structural integrity. At RA Power Solutions, we use the proven lock and stitch cast iron repair process to deliver durable, heat-free cran ack repairs that restore strength and performance.

The process of crack repair by metal stitching and metal locking does not require any welding and generation of heat. Time has proved that the crack repaired in casting by metal stitching and metal locking is far stronger and more durable in comparison to the repair of the crack by the welding process.

Broken Area of Engine Block
Broken Area of Engine Block

In most of the cases, crack repair in casting is possible onsite and there is no need to transport the heavy cast piece to the workshop. RA Power Solutions Pvt. Ltd. undertakes crack repair by metal stitching and metal locking process for the last more than 4 decades and has executed many repairs successfully all over the world.

Why Choose RA Power Solutions?

RA Power Solutions Pvt. Ltd. is the first company that can undertake repair of high-capacity engine blocks, turbine casings, cylinder heads and all cast parts installed on the vessel while it is on the move.

Engine Block After Repair by Metal Stitching & Metal Locking Process
Engine Block After Repair by Metal Stitching & Metal Locking Process
Metal Stitching of Jenbacher Engine Block Under Process
Metal Stitching of Jenbacher Engine Block Under Process

The lock and stitch cast iron repair executed by us is guaranteed for satisfactory performance. We are cost-effective and priced lowest in the industry.

Engine Block After Metal Stitching and Metal Locking
Engine Block After Metal Stitching and Metal Locking

For more updates on repair of crack in cast iron casting, cast iron crack repair, repair of high-capacity engine blocks, cast iron stitching, or crack repair in cast iron, email info@rapowersolutions.com, rajshahani@rapowersolutions.com, call at +91 9582647131, or +91 9810012383.

FAQs:

1. What is a lock and stitch cast iron repair?

Lock and stitch repair is a cold mechanical method to fix cracks in cast iron without welding.

2. How does this process differ from welding?

It avoids heat, preventing distortion and stress, making repairs stronger than conventional welding.

3. Can lock and stitch repairs be done on-site?

Yes, RA Power Solutions performs most repairs at your facility or onboard vessels.

4. Which components can be repaired with this method?

Engine blocks, gearbox housings, turbine casings, cylinder heads, compressor and pump casings.

5. Is lock and stitch repair cost-effective?

Yes, it reduces downtime and avoids the need for costly replacements.

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