• The welding method is the same that of world's brand.

    Low-grade products have some problems of breakdown and deformation in drilling. That's because they utilized a bonding agent to join a coupling with pipe.

    However ASAN's accumulated friction welding technology can join a coupling and a pipe perfectly.

    ASAN makes excellent productis in the same method with world prominent INGERSOLL RAND, ATLAS COPCO,
    TAMROCK'S



[HIGH STRENGTH WELDING]

 　

　

General Products Comparison Asan Friction Welding
Products
Carbon steel
(S45C)		 Coupling Chrome-molybdenum steel coupling +
Q/T heat treatment
Bond treatment to
screw type connection- easy to break		 Coupling and pipe connection Non-defect connection by friction welding
Use the material of imported substandard steel Pipe frame Standard pipe only for drill rod of Sumitomo Co. in Japan.


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982-5 Keumsan-Ri, Waekwan, Chilgok-Gun, Kyongbuk, Korea
Tel:+82-54-974-3325~6 　Fax:+82-54-974-3324