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Hydraulic Cylinder tube is a kind of precision tube finally used for construction of hydraulic cylinder barrel. The key quality index is internal surface quality, including ID tolerance&ovality,internal surface roughness,etc. Others are determined by design.
Hydraulic Cylinder Tubes
Precision-engineered seamless or welded steel tubes used for cylinder barrels, available honed or skived for ultra-smooth internal finishes.
Honed Steel Tubes
Cold drawn seamless steel tubes honed to tight tolerances (H8/H9) with Ra ≤ 0.25μm, ideal for industrial cylinders and fluid power systems.
Hydraulic Cylinder Steel Pipes
Used in medium to high-pressure applications, available in ST52, E355, SAE 1026, and alloy grades such as 4140 and 25CrMo4.
Hydraulic Cylinder Parts
OEM and custom-machined components including pistons, rods, end caps, seals, and gland nuts, designed to work seamlessly with our tubes.
Technical Specifications
Property: Tube Types, Finishing Options, Sizes Available, Tolerances, Material Grades, Delivery Conditions, Surface Roughness, Stock Options.
Hydraulic Cylinder Tube Material Comparison
Material: Carbon Steel, Stainless Steel, Aluminum.
Applications & Industries Served
Earthmoving Machinery (Excavators, Loaders)
Agricultural Equipment (Tractors, Harvesters)
Presses and Hydraulic Systems
Marine and Offshore Platforms
Material Handling & Lifting Equipment
Cylinder Repair and Rebuild Services
Our Advantages:
• Regular stock of quality raw material from leading mills. Fine melting of raw material ensures the purity of steel,hence surface perfection after ID deeep hole boring, honing or skiving&roller burnishing.
• Advanced skiving&roller burnishing machine upto 9 meters. This ensures consistent internal surface, ID tolerance, as well as bore roughness. automatic blade sawing machine that ensures cut squarenesss within 0.5mm.
• Automatic blade sawing machine controls the cut squareness within 0.5mm.
• Value added service like OD polishing is available.
• Customized services like OD machining or CNC turning are available.
Parameters of cylinder tubes:
1. Size Range: 33mm(OD)*25mm(ID)-325mm(OD)*280mm(ID), including imperial sizes.
2. Regular steel grades:
DIN 2391-2: | ST52, ST52.3,ST52.4 |
EN 10305-1: | E355,C45E, E410,E470,20MnV6, E355K2,E355J2G3,S355JR, 42CrMo4 |
ASTM A519: | 1020, 1026, 1045,1518,1524,4130,4140 |
JIS G3445: | STKM13A, STKM 13B, STKM 13C |
JIS G3473: | STC370, STC440,STC510A, STC510B,STC540,STC590A, STC590B |
GB/T 32957: | 45#, Q345B,Q345C,Q345D,Q345E, 27SiMn, 25Mn |
3. Mechanical properties of typical steel grades under condition of SRA/BKS:
Tensile Strength ( Rm ) | Yield Strength ( ReH ） | Longitudinal Elongation ( A ) | |
1026/ STKM 13C/ STC510A: | ≥ 520 Mpa | ≥ 380 Mpa | ≥ 10% |
ST52/ E355: | ≥ 580 Mpa | ≥ 450 Mpa | ≥ 10% |
CK45/ 1045/ C45E | ≥ 560 Mpa | ≥ 480 Mpa | ≥ 8% |
4. OD polishing or OD machining: can be negotiated for supply.
Quality Assurance
Method: ISO 9001 & ISO 14001, In-Process Inspection, Pressure Testing, Surface Roughness Checks.
Customization & OEM Services
Custom tube lengths and diameters
Special surface coatings
Machined cylinder parts per drawings
Full material traceability and test reports
FAQ
Q1: What are your standard hydraulic cylinder tube sizes?
A: ID from 40 mm to 580 mm, wall thickness up to 35 mm. Special sizes available on request.
Q2: Do you supply hydraulic cylinder parts as well?
A: Yes, we provide complete cylinder kits including rods, pistons, and machined end caps.
Q3: What is the advantage of honed tubes vs. skived & roller burnished?
A: Honed tubes offer excellent surface smoothness, while skived & roller burnished tubes provide better wear resistance.
Q4: Can I get material certificates and test reports?
A: Yes, all tubes come with EN10204 3.1 certificates and inspection reports.
Q5: Do you maintain inventory for urgent orders?
A: Yes, we keep stock of standard hydraulic cylinder tube sizes for fast dispatch.
