ASTM A36 Carbon Steel Honed Tube for Pneumatic Cylinders

• Customization: Available
• After-sales Service: 1 Year (Negotiated)
• Warranty: 1 Year (Negotiated)
• Model NO.: PZHT0145
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Honing
• Usage: Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Mining, Special Purpose
• Section Shape: Round
• Length: 3m, 6m, 9m, 12m, 16m, etc.
• Inner Diameter: up to 1000mm
• Outer Diameter: up to 1200mm
• ID Tolerance: ISO H7/H8/H9/H10
• Tolerance Grades: ISO IT7/IT8/IT9/IT10
• WT Tolerance: ±7.5% (>210mm ±10%)
• Roughness: Ra≤0.4μm
• Straightness: ≤0.5mm/M
• Heat Treatment: +SR/+A/+N/Q+T
• Surface: Chrome Plating / Nickel Plating / Galvanized
• Transport Package: Anti Rust Oil+Plastic Caps+Wooden Case
• Specification: Customized
• Trademark: PAZON / As Customer's Requirements
• Origin: Wuxi City, Jiangsu Province, China
• HS Code: 73049000
• Production Capacity: 20000 Tons/Year

Product Description

ASTM A36 Carbon Steel Honed Tube for Pneumatic Cylinders

Company Profile

Product Description

Engineered for Excellence: High-Performance Honed Tubes

High-precision honed tubes are precision seamless steel tubes manufactured through cold drawing or cold rolling processes, delivering exceptional dimensional accuracy and superior surface finish. Ideal for mechanical structures and hydraulic equipment, these tubes significantly reduce machining time, enhance material utilization, and improve overall product quality. Available in carbon steel, alloy steel, and stainless steel, honed tubes undergo a specialized roller burnishing process that induces residual compressive stress on the surface layer. This not only helps seal micro-cracks and improves corrosion resistance but also delays the initiation or expansion of fatigue cracks, thereby increasing fatigue strength. The hardened surface layer formed during burnishing enhances wear resistance, while the reduced surface roughness ensures better fit and prolonged service life in demanding applications.
 

SPEC Sheet
Product Name	Precision Honed Tube
Inner Diameter	up to 1000mm
Outer Diameter	up to 1200mm
Length	3m, 6m, 9m, 12m, 16m, etc.
Straightness	≤0.5mm/M
Material	Carbon Steel: 20# / CK45 / ST52(E355) / 25Mn / E235 / E470 Alloy Steel: 27SiMn / 42CrMo(AISI 4140) / AISI 4130 / 40Cr / E460 / 20Cr Stainless Steel: ASTM 316L / 304
Tolerance Grades	ISO IT7/IT8/IT9/IT10
ID Tolerance	ISO H7/H8/H9/H10
Heat Treatment	Stress Released: +SR / BKS Annealed: +A / GBK Normalized: +N / NBK Quenched and Tempered (Hardened and Tempered) : Q+T
Surface Treatment	Hard Chrome Plating / Nickel Plating / Galvanized
Wall Thickness Tolerance	±7.5% (>210mm ±10%)
Surface Roughness	Ra≤0.4μm
Packing	Anti Rust Oil+Plastic Caps+Wooden Case

 

Limits and Fits Table / Inner Diameter
ID / mm	H7		H8		H9		H10
	ES	EI	ES	EI	ES	EI	ES	EI
>6-10	+0.015	0	+0.022	0	+0.036	0	+0.058	0
>10-18	+0.018	0	+0.027	0	+0.043	0	+0.070	0
>18-30	+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
>315-400	+0.057	0	+0.089	0	+0.140	0	+0.230	0
>400-500	+0.063	0	+0.097	0	+0.155	0	+0.250	0
>500-630	+0.070	0	+0.110	0	+0.175	0	+0.280	0
>630-800	+0.080	0	+0.125	0	+0.200	0	+0.320	0
>800-1000	+0.090	0	+0.140	0	+0.230	0	+0.360	0
>1000-1250	+0.105	0	+0.165	0	+0.260	0	+0.420	0
>1250-1600	+0.125	0	+0.195	0	+0.310	0	+0.500	0
>1600-2000	+0.150	0	+0.230	0	+0.370	0	+0.600	0
>2000-2500	+0.175	0	+0.280	0	+0.440	0	+0.700	0
>2500-3150	+0.210	0	+0.330	0	+0.540	0	+0.860	0

 

Honed Tube Partial Dimensional Specifications (ID × OD)
ID / mm	OD / mm	ID / mm	OD / mm	ID / mm	OD / mm	ID / mm	OD / mm	ID / mm	OD / mm
40	50	90	110	135	159	190	210	300	351
40	55	90	114	135	160	190	215	300	356
50	55	95	110	140	152	190	220	300	377
50	60	95	115	140	159	190	225	320	340
50	63	100	107	140	160	200	213	320	351
50	65	100	107	140	165	200	216	320	356
50	68	100	108	140	168	200	219	320	370
50	70	100	110	140	170	200	220	320	377
55	70	100	112	140	180	200	225	320	402
60	70	100	114	145	170	200	230	320	426
60	73	100	115	150	160	200	232	350	370
60	75	100	120	150	168	200	235	350	377
60	76	100	118	150	170	200	245	350	400
60	78	100	121	150	175	200	250	350	402
60	80	100	125	150	180	220	235	350	426
63	73	100	127	150	194	220	240	360	380
63	75	105	125	155	180	220	245	360	402
63	76	110	120	160	168	220	250	360	426
63	78	110	121	160	170	220	255	360	450
63	83	110	125	160	175	220	260	360	480
65	80	110	127	160	180	220	266	380	426
65	85	110	130	160	184	220	270	400	420
65	90	110	133	160	185	220	273	400	440
70	80	110	140	160	190	225	250	400	450
70	82	110	146	160	194	230	245	400	460
70	83	115	130	160	195	230	260	400	470
70	85	115	135	160	203	230	273	400	480
70	90	120	130	165	190	240	273	400	490
70	95	120	140	165	205	250	266	400	500
75	85	120	145	170	200	250	273	400	508
75	90	125	132	180	194	250	280	400	520
75	95	125	133	180	200	250	290	400	550
80	86	125	135	180	203	250	299	420	440
80	90	125	140	180	205	250	300	420	510
80	92	125	145	180	208	250	325	420	550
80	93	125	150	180	210	250	351	450	550
80	95	125	152	180	213	260	300	450	470
80	100	125	159	180	215	280	299	500	530
80	102	125	168	180	216	280	323	500	590
80	108	130	150	180	219	280	325	570	600
85	100	130	152	180	220	280	355	580	620
90	100	130	155	180	235	288	351	600	630
90	102	130	156	185	205	288	377	600	720
90	105	130	159	185	215	300	320	700	850
90	108	130	160	185	220	300	350	800	1000

 

Chemical Composition
Material	C%	Si%	Mn%	P%	S%	V%	Ni%	Cr%	Al%
20#	0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	/	≤0.250	≤0.250	/
45#	0.42-0.50	0.17-0.37	0.50-0.80	≤0.035	≤0.035	/	≤0.300	≤0.250	/
Q345B	≤0.20	≤0.50	1.00-1.60	≤0.030	≤0.030	≤0.080	≤0.250	≤0.030	/
Q345D	≤0.20	≤0.50	1.00-1.60	≤0.030	≤0.030	≤0.150	≤0.250	≤0.250	≥0.015
25Mn	0.22-0.29	0.17-0.37	0.70-1.00	≤0.035	≤0.035	/	/	/	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	≤0.035	≤0.035	/	≤0.300	≤0.300	/
E355(ST52)	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025	/	≤0.250	≤0.250	/
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	≤0.040	≤0.050	/	/	/	/
E460	≤0.22	≤0.60	1.20-1.60	≤0.030	≤0.030	≤0.200	≤0.800	≤0.300	≥0.020
4130	0.28-0.33	0.15-0.35	0.40-0.60	≤0.040	≤0.040	/	/	0.800-1.100	/
4140	0.36-0.43	0.15-0.35	0.75-1.00	≤0.040	≤0.040	/	/	0.800-1.100	/

 

Delivery Condition
Condition Category	Common Abbreviation	DIN No.	Notes
Cold drawn (Hard)	+C	BK	Thermal treatment shall not be used after final cold-drawing or cold-rolling.
Cold drawn and stress released	+SR	BKS	Stress relief annealing of steel tube shall be conducted after final cold-drawing or cold-rolling.
Annealed	+A	GBK	Annealing of steel tube shall be conducted after final cold-drawing.
Normalized	+N	NBK	Normalizing of steel tube shall be conducted after final cold-forming.
Quenched and tempered	Q+T		Quenching and tempering of steel tube shall be conducted after final cold-forming or normalizing.

 

Mechanical Properties

Material

+C

+SR

+A

+N

T.S.

E.L.

T.S.

Y.S.

E.L.

Impact Value

T.S.

E.L.

T.S.

Y.S.

E.L.

Impact Value

Rm/MPa

A/%

Rm/MPa

Rel/MPa

A/%

KV2/J(-20°C)

Rm/MPa

A/%

Rm/MPa

Rel/MPa

A/%

KV2/J(-20°C)

20#(A106, ST45)

≥550

≥8

≥520

≥375

≥15

-

≥390

≥21

≥440

≥255

≥21

-

45#

≥650

≥5

≥600

≥520

≥10

-

≥390

≥14

≥540

≥340

≥18

-

Q345B

≥640

≥5

≥600

≥520

≥14

-

≥450

≥22

≥490

≥355

≥22

34

Q345D

≥640

≥5

≥600

≥520

≥14

27

≥450

≥22

≥490

≥355

≥22

34

25Mn

≥640

≥5

≥600

≥510

≥15

-

≥430

≥20

≥460

≥300

≥20

-

27SiMn

≥800

≥5

≥760

≥610

≥10

-

≥600

≥10

-

≥430

≥14

-

E355(ST52)

≥640

≥5

≥600

≥520

≥14

-

≥450

≥22

≥490

≥355

≥22

34

E460

≥690

≥620

≥13

-

-

-

≥650

-

-

-

SAE1026

≥640

≥5

≥600

≥510

≥15

-

≥430

≥20

≥460

≥300

≥20

-

 

Detailed Photos

Our Core Product Lines

We specialize in the manufacturing of high-precision steel tubing and components, with expertise in the following key areas:

★Precision Cold-Drawn Tubes
Manufactured from seamless tubing through controlled cold-drawing and finishing processes, our tubes deliver exceptional dimensional accuracy, a superior surface finish, and excellent internal cleanliness. They are designed to withstand high pressure, resist deformation during bending, and endure flaring or flattening without cracking, making them ideal for complex mechanical and hydraulic applications.

★Hydraulic Cylinder Barrels
We produce durable hydraulic cylinder barrels that form the core of reliable fluid power systems. Through optimized honing processes and precise control of key parameters, we ensure the final product achieves the necessary surface integrity, dimensional precision, and wear resistance for long-lasting performance under demanding conditions.

★Honed & Burnished Seamless Tubes
Utilizing advanced honing and roller burnishing techniques, we enhance seamless tubes to achieve an ultra-smooth internal surface and significantly improved wear resistance. This process refines geometry and creates a denser surface layer, making these tubes perfect for high-precision hydraulic cylinders and other critical applications requiring reliability and longevity.

Each product is crafted to deliver superior strength, wear resistance, and reliable performance.

Work Flow

Manufacturing Process of Honed & Burnished Seamless Tubes

Our production of honed and burnished seamless tubes follows a stringent, multi-stage manufacturing process to ensure the highest standards of dimensional accuracy, internal finish, and structural integrity. The key steps are outlined below:

★Material Selection & Preparation
High-quality metal billets that meet national standards are selected as raw material. The billets first undergo initial processes including blooming, free forging, and heat treatment to refine the grain structure and improve material properties.

★Straightening & Deep-Hole Drilling
The prepared billets are straightened to ensure uniformity. Subsequently, a deep-hole drilling operation is performed to create a precise through-hole, transforming the solid billet into a rough tubular form.

★Precision Honing
This is a core precision finishing stage. The internal surface of the tube is honed using specialized abrasive stones. This process precisely sizes the inner diameter (ID) to required tolerances and creates a superior, cross-hatched surface finish that is ideal for oil retention and seal longevity.

★External Machining & Finishing
The external surface and ends of the tube are then machined and polished on a lathe. This step brings the outer diameter (OD) to its final specified dimension and required surface quality, ensuring concentricity and a clean external appearance.

5. Quality Assurance & Delivery
Every piston rod is subjected to rigorous final Inspection against strict quality protocols. Upon approval, rods are carefully Packed, Crated, and Prepared for Shipment, guaranteeing they reach you in perfect condition.

Process Advantage: Honing is a highly efficient and precise internal finishing method. It not only ensures excellent geometric accuracy and surface integrity but also enhances the tube's performance by improving wear resistance and fatigue strength, which is critical for demanding hydraulic and mechanical applications.

Testing Equipment

Comprehensive Quality Assurance & Testing

At WUXI PAZON, each specification in our rigorous inspection protocol is verified using specialized, industry-leading equipment. This ensures every honed tube delivers measurable, reliable performance. Below is a detailed breakdown of the key inspection parameters and the precise tools we employ to validate them.

Key Inspection Parameters & Methods:

1. Dimensional & Geometrical Precision:
The inner diameter tolerance is strictly controlled to standard grades such as H8 (IT8), with H7, H9, H10 also available upon request. Straightness is maintained at ≤0.5 mm/m. These are verified using precision tools like Micrometers, Odd-Flute Micrometers, and Coordinate Measuring Machines (CMM).

2. Surface & Material Integrity:
The internal surface finish is guaranteed to be Ra ≤ 0.4 μm, measured by a Surface Roughness Tester. Material composition is confirmed via Direct Reading Spectrometer, while mechanical properties (tensile strength, yield strength, etc.) are validated using a Tensile Testing Machine and Impact Testing Machine. Hardness profiles are checked with Rockwell, Leeb, and Microhardness Testers.

3. Specialized Process Verification:
For tubes requiring internal hard chrome plating, thickness is inspected with a Coating Thickness Gauge. Heat treatment results and microstructural evaluation are performed using a Metallographic Analyzer. Verified by Ultrasonic Flaw Detection, which also screens for internal material defects. Corrosion resistance can be assessed with a Salt Spray Test Machine as needed.

This systematic approach, supported by advanced instrumentation, guarantees that our honed tubes deliver consistent quality and excel in demanding hydraulic and mechanical applications.

Application

Application Industries

Our high-precision honed tubes are engineered to deliver reliable linear motion, withstand extreme pressure, and ensure long-lasting performance in demanding environments. They serve as a critical component across a wide range of industrial machinery, including but not limited to:

★Material Handling & Lifting Equipment: Forklifts, stackers, palletizers, and various hoisting machinery rely on our tubes for robust and smooth cylinder operation.

★Metalworking & Forming Machinery: Drilling machines, punch presses, hydraulic press brakes, and other forming equipment utilize our tubes for precise force transmission and durability.

★Textile & Specialized Manufacturing: Printing and dyeing machines, automated textile looms, and other specialized industrial machinery benefit from the consistent performance of our precision cylinders.

★General Industrial Hydraulics: Our products are widely used in the hydraulic systems of construction equipment, agricultural machinery, mining vehicles, and automation systems.

By providing superior dimensional accuracy, exceptional surface finish, and enhanced wear resistance, our honed tubes help improve machine efficiency, reduce downtime, and extend the service life of your critical equipment.
 

Advantages

FAQ

Q: Are you Manufacture or Trading Company?
A: Yes. We are manufacturer. We have more than 16 years of experience in producing hydraulic cylinder, hydraulic station, hard chrome plating rod, honed tube and etc.

Q: Can you accept customized products or equipment?
A: Yes. If you have drawings or detailed requirements, we can customize products or equipments according to your requirements.

Q: How can I know the production progress of my order?
A: We have professionals tracking the production progress. If you need to know the progress, you can contact us and we will update you promptly.

Q: Do you inspect products before shipment?
A: Yes. The third party inspection is acceptable, the inspection cost paid by buyer. Anyway, all goods will be inspected by our QC before shipment.

Q: How to transport products or equipments?
A: By sea, by air, by land or express delivery (DHL, FedEx, etc.)