Crack Repair Using Metal Stitching and Metal Locking | RA Power Solutions

Cracks in cast iron and other metal components can lead to significant operational challenges in the power generation, marine, manufacturing, and heavy engineering industries. Traditional repair methods, like welding, often introduce thermal stress, weakening the material over time. With over 44 years of experience, RA Power Solutions specializes in metal stitching and metal locking, two highly effective cold repair techniques that restore the integrity of cracked components without causing additional damage.

What is Metal Stitching?

Metal stitching is a cold repair method for mending cracks in cast iron, aluminum, and other metals without welding. It involves drilling precise holes along the crack, inserting metal stitching pins, and locking the pieces together to restore the component’s original strength. This technique is ideal for engine blocks, turbine casings, compressors, and other high-stress industrial machinery parts.

Metal stitching and Metal locking
Metal stitching and Metal locking

What is Metal Locking?

Metal locking is a reinforcement method used alongside metal stitching. Custom-designed locks are inserted into the stitched area to provide additional support, preventing further crack progression and ensuring a long-lasting repair. This method enhances the durability of the repaired component, making it as strong as or even stronger than the original structure.

metal locking
Metal locking

Why Choose Metal Stitching and Metal Locking?

Compared to traditional welding, metal stitching and locking offer several advantages:

  1. Cold Repair Process: No heat is applied, preventing material distortion, stress buildup, and further cracking.
  2. Onsite Repairs: No need to transport heavy machinery; repairs can be performed at the client’s location, reducing downtime.
  3. Retains Original Strength: Unlike welding, which can weaken cast iron, metal stitching and metal locking maintain or even improve the structural integrity.
  4. Cost-Effective: Eliminates the need for expensive replacements and reduces overall maintenance costs.

Benefits of Metal Stitching and Metal Locking

RA Power Solutions has successfully performed repairs for various industries, including:

  • Marine Industry: Repairs on ship engine blocks and connecting rods to avoid costly replacements.
  • Power Plants: Restoration of turbine casings, generators, and compressors to maintain efficiency.
  • Manufacturing Plants: Fixing cracks in heavy-duty machines and industrial equipment.

RA Power Solutions provides metal stitching and metal locking services in countries across Asia, the Middle East, Europe, Africa, and the Americas, including India, UAE, USA, UK, Saudi Arabia, Germany, Singapore, and Australia. With a strong global presence, the company offers onsite repair solutions for industries like marine, power plants, and heavy engineering, helping clients avoid costly replacements and downtime. Their expertise extends to Malaysia, Indonesia, Qatar, Oman, Kuwait, Bangladesh, Sri Lanka, the Philippines, Vietnam, Nigeria, Brazil, Germany, Singapore, Malaysia, Indonesia, and South Africa, ensuring reliable crack repair services worldwide.

Crack repair by metal stitching
Crack repair by metal stitching

For more information regarding repair cast iron, repair crack cast iron, or cast iron repaircrack repair by metal stitching and metal locking, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.




Cracks in cast iron and other metal components can lead to significant operational challenges in the power generation, marine, manufacturing, and heavy engineering industries. Traditional repair methods, like welding, often introduce thermal stress, weakening the material over time. With over 44 years of experience, RA Power Solutions specializes in metal stitching and metal locking, two … Continue reading “Crack Repair Using Metal Stitching and Metal Locking | RA Power Solutions”

Metal locking of Engine Block by Experienced Technicians | Bangladesh | 44 Years Of Experience

On site Metal stitching and metal locking is a precise mechanical method of making permanent repairs to broken casting and machine parts.

An engine block of Wartsila 18V32 was reported damaged by South American power plant due to failure of connecting rod. The engine was just out of warranty and the cost of bare engine block quoted was exorbitant with a delivery time of 9 months.

RA Power Solutions technicians successfully repaired a damaged Wartsila 18V32 engine block using metal locking and stitching in Bangladesh. With 44 years of experience, we actively operate regularly. The block was repaired while it was on the foundation and without disassembly of crankshaft and major components. The damaged portion was measuring 72 inches X 42 inches approx.

Metal Stitching & Locking of Crankcase Door is under progress
Metal Stitching & Locking of Crankcase Door is under progress

Metal locking and metal stitching are executed by experienced engineers with having record of repairing engine block and major engine components exceeding more than 1300 numbers in the last 44 years.

 A cost-effective, quick response and sincerity are the main advantages of getting repairs done by RA Power Solutions.

For more details regarding metal stitching, metal locking services, repairing cast iron metal lock, cast iron repair, and Metal Locking of engine block at Low Price, email us your query at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

On site Metal stitching and metal locking is a precise mechanical method of making permanent repairs to broken casting and machine parts. An engine block of Wartsila 18V32 was reported damaged by South American power plant due to failure of connecting rod. The engine was just out of warranty and the cost of bare engine … Continue reading “Metal locking of Engine Block by Experienced Technicians | Bangladesh | 44 Years Of Experience”