Screw conveyors hardened with standard welding blowpipe.
Flame-hardened flights
Oxy-Acetylene Tips
Oxy-Acetylene Tips ; 19 , n 4
1940
3 pages
Article (Journal)
English
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Santa Fe tests flame-hardened rail
Engineering Index Backfile | 1963
Santa Fe tests flame-hardened rail
Engineering Index Backfile | 1963
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