This is our new series ,and into production this year.

we have equippment much new machines to do it ,such as :double face milling machine ,that can

sure one face same as another .

The details of it :

1,Material :GB45#

2, Hardness:26-28HRC

3,OD:242,Length:320

4,Suface finish:GB1.6

5,Package :wodden case

6,Sample is available.

our govenment websit:www.jshsjx.com

welcome ur inquiry ,I will deal with it intime.

cylinder bottom