1)Range: (6--530)mmx(1-40)mm or (10/17.1/14-1200/1219/1220)mmx(0.5-20)

2) Heat treatment: annealed, bright annealed, stress relieved, normalized,
spheroid annealed, or cold finished

3) Light wall, heavy wall, thin size, special cutting, tight ID tolerance, small hardness range, special mechanical property, special surface