Hydraulic Tube

Place of Origin: Jiangsu China (Mainland) Brand Name: Tubes China Standard: DIN 2391, EN 10305, GB/ T 8713 etc.

Application: making hydraulic cylinder or pneum . Diameter: ID 30 mm to ID 500 mm Hardness: CK45 HB: 207- 240; ST45 HB: 165- 200

Anti- rust protection: Oil or varnish Raw material: St 52, CK 45, 27SiMn, 20# etc. Specification: ID 30 mm to ID 500 mm

Surface: Smooth Precision: H8, H9, H10



Hydraulic Tube

Precision: H8, H9, H10

Processing form: Cold- drawn, Cold- rolled, Hone, SRB

Honed TubeSeamless steel tube for hydraulic and pneumatic cylinder useProcessing modeDiameterLengthLinearityPrecisionRoughness of inner hole

Cold rolling30- 100?12M0. 3- 1. 0H8- H100. 4- 1. 6

Cold drawn30- 250?12MH8- H100. 8- 1. 6

Grinding40- 500?12M1000H8- H90. 4- 0. 8

Rolling40- 400?7MH80. 4

Mechanical performanceModelItemCold drawn (rolling) tubemetallic cut pipe

20Intensity of tension?bN/ mm 2?510?390

Elongation rate ?5% ?5?20

45Intensity of tension ?bN/ mm 2?647?590

Elongation rate?5% ?4?4

16MnIntensity of tension?bN/ mm 2?640

Elongation rate?5% ?10

27SiMnIntensity of tension?bN/ mm 2?840

Elongation rate?5% ?7. 5

Size toleranceInner diameterwarp of wall thickness

H8H9H10

30+0. 0330+0. 0520+0. 0840?5%

30- 50+0. 0390+0. 0620+0. 1000

50- 80+0. 0460+0. 0740+0. 1200

80- 120+0. 0540+0. 0870+0. 1400

120- 180+0. 0630+0. 1000+0. 1600

180- 250+0. 0720+0. 1150+0. 1850

250- 315+0. 0810+0. 1300+0. 2100

315- 400+0. 0890+0. 1400+0. 2300