What is Hydraulic Steel Pipe?

What is Hydraulic Steel Pipe?
Hydraulic steel pipe is basically divided into the hydraulic system with fluid pipe and oil cylinder, also known as honing tube, and cold drawn or cold rolled precision seamless steel pipe also contains hydraulic tube.
Hydraulic pipe after finishing, no oxidation bright heat treatment of raw materials (NBK), nondestructive testing, steel pipe inner hole through high pressure washing, pickling, block on both ends of the steel tube inside and outside wall with anti-rust oil antirust processing, used as a dustproof. To produce steel pipes with high precision, finish good, tube inside and outside wall without oxidation layer, steel pipe can bear the high pressure of fluid flow through, and the steel tube cold bending deformation, flaring, flattening without cracks.Mechanical properties can be bending deformation under any Angle.

Honed Tubes for Hydraulic/ Pneumatic Cylinder

The honed tubes suitable for various kinds of Precision Mechanical Tube, Honed Cylinder Tubing and Hydraulic Cylinder, Construct use Multi Joint Tube, Steel Axis Pipe, Injection Machine and Robotic Arm. This tubing is ready to use for hydraulic cylinder applications without further ID processing.

Roll Honing Pipe

Size range

Inside diameter from 40 to 1000mm, Max length 20 meters.

Straightness: 0.5 /1000

Tolerance EXT: DIN 2391

Tolerance INT: ISO H8

Roughness(Ra): 0.2 to 0.4µ

Type:

cold drawing, normalizing treatment, honing.

Chemical composition(%)

Si(Max)	Mn (Max)	C Max)	P (Max.)	S (Max)
0.55	1.60	0.22	0.025	0.25

Mechanical properties:

Tensile strength Min	Yield Point Min	Elongation % Min
580 N/mm2	420 N/mm2	10

Marking: Yaang, ID, OD

Length: unfixed length or fixed length

Package: banding with steel strips, braiding parcel at outside

Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.

Impact test: -20℃, 27 J (only for special requirement)

High precision cold drawn tube (ready to Honed Tube) can also be supplied.

Tolerance standard:

ID(mm)	TOLERANCE(mm)
ID(mm)	H7	H8	H9	H10
≦30	+0.021/0	+0.033/0	+0.052/0	+0.084/0
30 – ≦50	+0.025/0	+0.039/0	+0.062/0	+0.100/0
50 – ≦80	+0.030/0	+0.046/0	+0.074/0	+0.120/0
80 – ≦120	+0.035/0	+0.054/0	+0.087/0	+0.140/0
120 – ≦180	+0.040/0	+0.063/0	+0.100/0	+0.160/0
180 – ≦250	+0.046/0	+0.072/0	+0.115/0	+0.185/0
250 – ≦315	+0.052/0	+0.081/0	+0.130/0	+0.210/0
315 – ≦700	+0.057/0	+0.089/0	+0.140/0	+0.230/0