material: ck45, sae1045, 4140, 4340, jis45c, 40cr, 20mnv6, 42crmo, ss431, ss430, 

stainless: steel 304/316, etc

diameter: φ6-250mm

length: max 8m

tolerance：iso f7/on request

chrome layer: 20 micron (min) to 100 micron

hardness of the chrome layer: 850 hv(min)-1150hv

roughness: ra<=0.2u

straightness: <=0.15/1000

roundness: half of the tolerance iso f7/on request

delivery condition:  hard chrome piston rod

                        quenched & tempered

                        induction hardened rod

                         q+t induction hardened rod

corrosion resistance: test in natural salt spray according to astm b 72-96 hours

packing: anti-rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case