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US20080060722 Method for the production of tubes for heat exchangers from precipitation-hardened alloys by high-frequency induction welding  
Described herein is an embodiment of a method for the production of tubes for heat exchangers, including the steps of: a) producing an ingot with rectangular cross section (plate) b) hot-rolling...
US20100122753 CONCRETE SLURRY TRANSPORTING PIPE FOR CONCRETE PUMP-CAR  
Disclosed is a concrete slurry transporting pipe for concrete pump-cars, which has improved wear resistance to friction with sands or gravels and impact resistance during transportation of...
Matches 1 - 2 out of 2