We are Chinese manufacturer of seamless cylinder tubes, include cold drawn tubes, honed tubes, precision tube, skived and burnished tubes and chrome bar, piston rods
For tubes:
Material: St52, E355, A106B, CK45 and so on
ID size: from 50 to 400mm
ID tolerance: H8
Roughness: 0.4 Max
Purpose: for hydraulic cylinder or pneumatic cylinder
We are equipped with honing machine, cold drawn machine, skived and burnished machine, furnace and so on. 
For chrome bar:
CK45, f7, usually chrome thickness 20-30 microns.

product keywords: cold drawn steel pipe,hydraulic steel tube,hydraulic cylinder pipe,honing pipe,cylinder hones,cold drawn seamless tube,hydraulic cylinder honed tube,cylinder honed tubing,hydraulic pipe,hydraulic tube,honed tube,pneumatic tube,pneumatic pipe,chrome tube,skived and burnished tube， precision tube, precision pipe, chrome bar, piston rods, chrome shaft