Honed Tube

Honed tube is well known as hydraulic cylinder tube in many industries. This is because honed tubes are the most important materials of manufacturing hydraulic cylinders. And as this kind of tubing is usually honed in tube inside diameter, it is known as honed ID tubing also.

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.

Quality Standards

Seamless Honed Tubes (Steel) with a micro-finish and highly accurate in bore size within tolerance H7 or equivalent.

DIN 2391 Seamless Precison Steel Tubes
EN10305 Steel Tubes for Precision Applications Seamless Cold Drawn Tubes
ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
JIS G3445 Carbon Steel Tubes for Machine Structural Purposes

Grade: ST 52, ST52.3, CK45, E355, 16Mn, STKM13C, SAE1020, SAE1026, SAE1045

Size range:

Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.

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.

Tolerance standard:

Different sizes of ready to use honed tube are available.

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

This will provide long piston seal life and prevent failure of the cylinder. The tube material is selected on the basis of application & working pressure.

The seamless tube for hydraulic cylinders, obtained from high quality cold drawn tubes, available in a wide dimensional range.

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.

Related honed tube

Chrome-plated honed tube

Ready to honed tube

Hydraulic Tubes

DIN2391 ST52 Seamless Honed Tube

Chrom plate rod

Skiving tube

Chemical composition(%)

Grade	C	Si	Mn	P	S	Cr	Mo
St 45 (DIN1.0408)	0.21 max	0.35 max	0.40 min	0.025 max	0.025 max	/	/
St 52 (DIN1.0580)	0.22 max	0.55 max	1.60 max	0.025 max	0.025 max	/	/
E355	0.22 max	0.55 max	1.60 max	0.025 max	0.025 max	/	/
1020	0.18-0.25	/	0.30-0.60	0.040 max	0.050 max	/	/
1026	0.22-0.28	/	0.60-0.90	0.040 max	0.050 max	/	/

Mechanical Properties( T=20°C if not differently stated ):

Grades	Delivery Conditions	Tensile Strength Rm (Mpa)	Elongation in the longitudinal direction Al (%)
St 45	+A (GBK)	390 min	21 min
St 52	+A (GBK)	490 min	22 min
E355	+A (GBK)	450 min	22 min
1020	+A (GBK)	390 min	21 min

Product Processing: Raw materials- Cold drawn/rolled- Heat treatment (BKS)- Honed - packing.

Processing Way	Cylinder Barrel ID (mm)	Max Length (mtr)	Straightness (mm/mtr)	ID Tolerance	Wall Thickness Tolerance (mm)	ID Roughness (μm)
Cold Drawn	40-320	12	0.2-0.5	H8-H10	±5%	0.8-1.6
Cold Rolled	12-100	12	0.2-0.5	H8-H10	±5%	0.8-1.2
Cold Drawn+Honed	40-500	8	0.2-0.3	H7-H9	±5%	0.2-0.8
Cold Drawn-SRB	40-400	7	0.2-0.3	H8-H9	± 5%	0.2-0.4
Deepth Drilling-Honed	320-1100	8	0.2-0.3	H7-H9	±8%	0.2-0.8
Deepth Drilling-SRB	320-600	7	0.2-0.3	H8-H9	±8%	0.2-0.4

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

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

Hydraulic cylinder

A Hydraulic cylinder (also called a linear hydraulic motor) is a echanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in engineering vehicles.