Home > Products > Honed Tube > Honed Tubes

Products

Srb Honed Hydraulic Cylinder Tube

In the pursuit of ultimate performance and efficiency in hydraulic systems, the Skived and Roller Burnished (SRB) honed tube represents a significant technological advancement over traditional honing processes. An SRB Hydraulic Cylinder Tube is engineered to provide an unparalleled internal surface finish and geometric precision, making it the superior choice for demanding, high-duty applications.

Send Inquiry

Description

The term "SRB" describes a sophisticated two-stage manufacturing process. The first stage is Skiving (or Skiving), where a single-point cutting tool precisely machines the interior of a seamless steel tube. This step accurately establishes the final inner diameter while simultaneously ensuring exceptional straightness (typically better than 0.5 mm/1000mm) and correcting any geometric deviations. It creates the perfect foundation for the next critical stage.

The second stage is Roller Burnishing. Immediately after skiving, a hardened, highly polished roller tool is hydraulically or mechanically forced against the internal surface. This cold-working process micro-sizes the surface by compressing the peaks of the skiving tool marks into the valleys. This action achieves two primary goals: it creates an incredibly smooth, mirror-like finish with a surface roughness often as low as Ra 0.1 - 0.4 μm, and it induces deep compressive residual stresses on the surface layer. These stresses work-harden the material, significantly increasing its fatigue strength and resistance to wear and corrosion.

The benefits of this process are profound. The ultra-smooth finish drastically replicates friction between the tube wall and the piston seals, leading to higher system efficiency, reduced heat generation, and dramatically extended seal life. The improved surface integrity and compressive stresses enhance the tube's ability to withstand high cyclic pressures, preventing fatigue cracking and increasing the overall service life and reliability of the hydraulic cylinder.

Manufactured from high-quality steels like ST52, E355, CK45, or 4130/4140 alloys to standards such as DIN 2391, and available in a wide range of diameters and lengths, SRB tubes are the preferred component for critical applications. They are indispensable in heavy-duty construction machinery, high-precision injection molding machines, industrial automation, and mobile equipment where downtime is not an option.

In summary, the SRB Honed Tube is more than just a cylinder barrel; it is the result of precision engineering aimed at maximizing performance. By combining geometric accuracy with a superior surface microstructure, it delivers unmatched reliability, efficiency, and longevity, ensuring that hydraulic systems operate at their absolute best.

1. Chemical Composition

Steel grade	Chemical composition %
	C	Si	Mn	P	S	Cr	Ni	V	AI
	C	Si	Mn	≤				≥
C20	0.17-0.24	0.17-0.37	0.15-0.65	0.035	0.025	0.250	0.250	/	/
CK45	0.42-0.5	0.17-0.37	0.5-0.8	0.025	0.025	0.250	0.300	/	/
Q355B	≤0.2	≤0.5	1.0-1.6	0.030	0.030	0.030	0.250	0.080	0.015
Q355D	≤0.2	≤0.5	1.0-1.6	0.030	0.025	0.250	0.250	0.150	/
E355(ST52)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.250	0.250	/	/
SAE1026	0.22-0.28	0.15-0.35	0.6-0.9	0.040	0.050	/	/	/	/
4130	0.28-0.33	0.15-0.35	0.4-0.6	0.040	0.040	0.80-1.10	/	/	/
4140	0.36-0.43	0.15-0.35	0.705-1.0	0.040	0.040	0.80-1.10	/	/	/

2.Mechanical Property:

Delivery condition	Cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	Elongation A5%	Rm MPa	ReH Mpa	Elongation A5%
C20	≥550	≥5	≥520	≥375	≥15
CK45	≥645	≥5	≥600	≥520	≥10
Q355B	≥640	≥5	≥600	≥520	≥14
Q355D	≥640	≥5	≥600	≥520	≥14
E355(ST52)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥520	≥15

3.Tolerance:

Tolerance	I.D Tolerance			Tolerance of wall thickness
Size of I.D.	H8	H9	H10	<120mm(O.D) ≥120mm up to 210mm >210mm	±5% ±7.5% ±10%
30	0.033	0.052	0.084
>30-50	0.039	0.062	0.1
>50-80	0.046	0.074	0.12
>80-120	0.054	0.087	0.14
>120-180	0.063	0.1	0.16
>180-250	0.072	0.115	0.185
>250-315	0.081	0.13	0.21
>315-400	0.089	0.14	0.23

4.Processing Form

Processing form	I.Dmm	Length	Straightness	I.D tolerance	I.D Roughness (RA)
Honed	40-500	≤12M	0.5-1/1000	H8-H9	0.4-0.8um
SRB	50-250	≤12M	0.5-1/1000	H8	0.1-0.4um

Product Name	Seamless carbon steel pipe
Material	Carbon Steel and Alloy Steel
Surface	oiled, Polished, Brightness, Metallic color
Standard	ASTM A106 A53 A192 A179 A210 A519 DIN17175 1629 2391 EN10216-1 10216-2 10305-1 and GB,JIS
Grade	St35,St45,St52,E215,E235,E355,sch10,sch20,A106,A179,A192,A210,T11,T22,T12,AISI4130,SAE1010,SAE1020.etc
Technique	Cold drawn & cold rolled &SRB
Application	1. Automotive and mechanical pipes
	2. Petroleum cracking pipes
	3. High Pressure Boiler Pipe
	4. Low and middle pressure fluid transportation pipeline
	5. Chemical fertilizer equipment pipes
	6. Heat exchanger pipes
Delivery Conditions	1. BK (+C)	No heat treatment after last cold forming process.
	2. BKW (+LC)	After last heat treatment there is a light finishing pass (cold drawing)
	3. BKS (+SR)	After the final cold forming process the tubes are stress relieve annealed.
	4. GBK (+A)	After the final cold forming process the tubes are annealed in a controlled atmosphere.
	5. NBK (+N)	After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
Package	1. Bundle Packing.
	2. Plain end or vanished as per customer's request.
	3. Wrapped in waterproof paper.
	4. Sackcloth with several steel strips.
	5. Pack in heavy tri-wall boxes.

Din2391 St52 Srb Cylinder Pipe

Hot Tags: srb honed hydraulic cylinder tube, China srb honed hydraulic cylinder tube manufacturers, suppliers, factory, Honed Tubes For Hydraulic Cylinders, hydraulic parts aisi 1045 honed cold rolled pipe, Seamless Precision Honed Tubes, shock absorber tube iso9001 carbon pipe honed, st52 din2391 seamless pipe shock absorber honed, Stainless Steel Honed Tube

Seamless Precision Honed Tubes

Stainless Steel Honed Tube