Metal Locking Service Inc. specializes in emergency cast iron repair. Founded in 1942, we are proud to be the oldest and the largest cast iron repair company in the world! We utilize a precise, mechanical method for making permanent cast iron repair without the use of welding, brazing or applied heat of any kind. Our cast iron repair technique is also known as metal locking, metal stitch, metal stitching, metalock, metalace, metal lock, cast iron stitching and cast iron crack ...
read moreMany of our customers find significant value in our “turn-key” services that we provide for industrial equipment ...
read moreMetal Locking Service provides a full compliment of welding and fabrication services. Our material capabilities include: ...
read moreOur business is centered on a permanent mechanical repair for cast iron and machine parts denoted as "Metal Locking”. ...
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Metal Locking Service provides world-wide service to all of the major railroad customers. Over fifty years and thousands of repairs have resulted in numerous qualifications for the Class 1 Railroad industry.




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