-1. The production: (Cold drawn)
a. Steel pipes with electric resistance welding
b. Carbon steel pipes for machine production c. Alloy steel pipes

2. Raw material:
a. The raw plates / coils are from CSC-China Steel Corporation in Taiwan.
b. The Cr-Mo seamless tubes are imported from Japan.

3. Inspection:
a. The MTR including Chemical compositions and Mechanical Properties.
b. Eddy Current test if required.