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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
| 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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