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Judson A Smith

857-863 Sweinhart Road
Boyertown PA 19512
Telephone: 610-367-2021
FAX: 610-367-0962

A.T. Wall

55 Service Avenue
Warwick RI 02886
Telephone: 401-739-0740
FAX: 401-732-5784

Parmatech CA

2221 Pine View Way
Petaluma, CA 94954
Telephone: 707-778-2266
FAX: 707-778-2262

Parmatech RI

825 Waterman Ave
East Providence, RI 02914
Telephone: 401-824-5010
FAX: 401-424-5018

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Metallurgy experience

Problem
A defense customer was developing a pilot-ejection system to remove the pilot from harm’s way when needed. The system required a linear explosive charge to detonate the system and safely eject the pilot, but the engineers and supply chain managers were not familiar with tube fabrication, and ended up with a very large range of bids for the tubing in this application. The cost range was so large, they were confused by the results and weren’t sure how to make the selection.

Solutions
A.T. Wall’s engineers and technical sales team were able to explain the different tube drawing technologies including welded tubing (cheaper but not robust) and cold-drawn tubing (more expensive but very precise with no weld seam for failure points). They also were able to make recommendations for coin silver, a precious metal with just the right metallurgical properties for the application.

Results
The customer team has been able to make these safety devices with zero field failure for more than a decade with Wall’s support and technical expertise in specialty metals and cold drawn tubing.

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