High Precision Honed Tubes By Jiangyin Hongteng Machinery Co., Ltd.

We are offering our customers a wide range of High Precision Honed Tubes. Inner Diameter a R32-a R400mm, wall thickness 3-50mm, length 13000mm, cold drawn, honed, and machining hydraulic tube. This product is widely used in hydraulic oil cylinder, pneumatic cylinder, petrifaction oil pump, coal mine, engineering machinery, crane and transport machinery, auto transmission axes, plastic machinery, and so on.

Cylinder diameter is a R32-400mm
Side thickness 3-50mm
Materials ST 52, 20#, 45#, 25Mn, 27SiMn, 20MN2
Supply goods conditions: cold drawn, cold rolling, honed
Tolerances:
Outside Diameter EN10305-1/ DIN 2391TOLERANCES
Outside Diameter: BSEN10305-1 / DIN 2391
Bore: Generally H8 with surface finish max 0.4 microns Ra
Inside Straightness: 1mm / 1000mm or better
Eccentricity: OD a 110mm max 5% of average wall
OD > 110mm max 7.5% of average wall
OD > 230mm max 10% of average wall
(Other steel grade and delivery conditions are optional)