How much is the difference between the three grade thread steel and the two grade thread steel?
This is no fixed bar, probably in the difference between 50-150, the normal situation, but more or look at the supply and demand situation, there are two more expensive than three, the specific circumstances of specific analysis.
This depends on the size of the local quantity, and some are relatively hot specifications, prices may be a lot worse, may also be more expensive than the three class 2, but generally about 200 difference bar
For some time, due to the supply of three threads, and the two level of demand, resulting in two, more expensive than three.
