C45E Seamless Honed Steel Tube for Hydraulic Cylinder Barrel
Model: CX-HB-01
Brand: CHENGXIN
HS Code: 730441
MOQ: 2–3 tons/size
Product Overview
Our C45E seamless honed steel tube is specially engineered for hydraulic cylinder barrel applications, providing superior inner surface finish, tight dimensional tolerances, and robust mechanical strength. Manufactured in accordance with international standards like EN 10305, this C45E hydraulic cylinder barrel tube ensures optimal performance for high-pressure hydraulic systems in construction machinery, industrial equipment, agricultural machines, and more.
Key Features of C45E Hydraulic Cylinder Barrel Tube
Material Grade: EN C45E – a high-quality medium carbon steel offering high tensile strength and machinability, making it ideal for hydraulic cylinder barrels.
Size Range:
Outer Diameter (OD): 40mm – 580mm
Inner Diameter (ID): 30mm – 500mm
Wall Thickness: Customized as required
Manufacturing Method: Cold rolled, hydraulic cold drawn, hot rolled + deep hole boring
Surface Finish: Honed or Skived & Roller Burnished for ultra-smooth bore
Available Steel Grades for Honed Cylinder Tubes
EN Standard: C45E, E355, 25CrMo4, 42CrMo4, E410, E470
DIN: ST52, ST52.3, ST52.4
SAE/AISI: 1020, 1026, 1045, 4130, 4140
JIS: STKM13C, S45C
GB: 20#, 45#, Q345B/C/D/E, 16Mn, 27SiMn
Surface Roughness & Tolerance
Roughness (Ra):
Honed Tubes: Ra ≤ 0.25μm or Ra ≤ 0.35μm
SRB Tubes: Ra ≤ 0.25μm
Inner Diameter Tolerance: H8 (per ISO 286)
Example for ID 80mm: +0 / +0.054mm
Straightness: ≤ 0.5mm/m
Delivery Conditions (Heat Treatment)
+C – Cold rolled
+LC – Cold drawn
+SR – Stress relieved
+A – Annealed
+N – Normalized
Q+T – Quenched & tempered
End Finish & Packing
End Type: Plain ends, square cut, free of burrs (or beveled for SRB tubes)
Packing: Oil-coated interior and exterior, bundled with steel strips, plastic caps on both ends, external wrap with PVC or woven bags
Custom Marking: Available (brand, spec, heat number, etc.)
Applications of C45E Cylinder Barrel
Hydraulic Cylinder Barrel – Serves as the inner body of a hydraulic cylinder, ensuring low friction movement and leak-proof sealing with piston seals.
Construction Equipment – Excavators, cranes, bulldozers
Agricultural Machinery – Harvesters, loaders, tractors
Material Handling Equipment – Forklifts, scissor lifts
Industrial Automation & Press Systems
Benefits of CHENGXIN Honed C45E Tube
High Strength & Machinability – Excellent tensile properties suitable for pressure systems
Exceptional Bore Smoothness – Extended seal life and low friction piston motion
Superior Tolerance Control – Reduces leakage and improves hydraulic efficiency
Corrosion Resistance – Oil-coated inner and outer surface against rust
Strict Quality Control – 100% inspection on dimension, roundness, and surface finish
Frequently Asked Questions
Q1: What’s the difference between C45E and E355 for hydraulic cylinder barrels?
A: C45E is a medium carbon steel offering higher tensile strength and wear resistance, while E355 provides excellent toughness and weldability. C45E is preferred when higher mechanical strength is required.
Q2: Is C45E honed tube suitable for high-load hydraulic cylinders?
A: Yes, its mechanical properties make it ideal for high-pressure and heavy-duty hydraulic systems.
Q3: Can you supply tubes with both honed and SRB surface finishes?
A: Yes, we offer both surface finishes depending on customer requirements.
Q4: What’s your regular lead time?
A: Normally 40–60 days depending on the size and surface finish. Small-bore honed tubes with Ra ≤ 0.25μm take longer due to strict processing control.
Q5: Do you offer OEM services with customer branding and labeling?
A: Yes, we can customize markings, packaging, and offer OEM production for bulk orders.
Company Profile – Your Reliable C45E Cylinder Barrel Supplier in China
CHENGXIN is a leading manufacturer and exporter of honed hydraulic cylinder tubes, chrome plated rods, and cold drawn seamless tubes. Since 2002, we’ve served OEMs and distributors across Europe, the Middle East, Southeast Asia, and South America.
Factory Size: 32,000㎡
Workshops: 12
Production Capabilities: OD up to 356mm, wall thickness up to 35mm
Certifications: ISO9001, ISO14001
Quality Control: In-house raw material inspection, dimensional testing, ultrasonic flaw detection, roughness inspection, and hydraulic testing
Get a Free Quote Today
Looking for a reliable supplier of C45E hydraulic cylinder barrel tubes with competitive pricing, fast delivery, and strict quality control? Contact us now to get a quotation and receive technical drawings, material certificates, or third-party inspection services.
