Hydraulic pipe

steelheavy-dutyfor agricultural applications

Product Description
EASTAI ST52 Skived and Roller Burnished Tube is a precision steel tube engineered for hydraulic cylinder applications. Manufactured from ST52 seamless steel with internal skiving and roller burnishing, the tube delivers tight dimensional tolerance, high internal surface finish and wear resistance suitable for mobile and industrial hydraulic systems.

Key Attributes

• Model: Skived and Roller Burnished Tube
• Brand: EASTAI
• Material: ST52 seamless steel
• Inner diameter range: 50 mm – 250 mm
• Length: Up to 13 m (cut-to-length available)
• ID Tolerance: H8 (tighter tolerances on request)
• Straightness: 0.5–1 mm / 1000 mm
• Surface Roughness (Ra): 0.1–0.4 µm
• Application: Hydraulic cylinders for mobile equipment, industrial machinery and heavy-duty systems
• Packing: Steel-strapped bundles, optional export wooden cases

Technical Specifications
Inner Diameter Range: 50 mm – 250 mm
Wall Thickness: 5 mm – 50 mm (as required)
Tube Length: Up to 13 m
ID Tolerance: H8 (customizable)
Surface Roughness (Ra): ≤ 0.4 μm (typical 0.1–0.4 μm)
Straightness: 0.5–1 mm / 1000 mm
Tensile Strength: ≥ 580 MPa
Yield Strength: ≥ 460 MPa
Elongation: ≥ 22%
Standards: DIN 2391, EN 10305, ASTM A519
MOQ: 1 Ton
Delivery Time: 7–10 days for regular sizes

Production & Capacity
High-efficiency production line dedicated to skived & roller-burnished tubes. Daily capacity: 30 tons. In-house manufacturing for standard and customized orders to ensure consistent supply and controlled lead times.

Applications

• Hydraulic cylinders for construction and agricultural machinery
• Lifting and hoisting equipment
• Mining and drilling machinery
• Industrial automation systems

Processing & Machining Services
Value-added services: cut-to-length (±1 mm), chamfering and deburring, threading, welding prep and port machining, inner-diameter polishing, CNC turning and drilling for hydraulic components.

Packaging & Shipping

• Steel-strapped bundles to prevent deformation
• Anti-rust oil coating for long-term protection (up to 3 years)
• Plastic end caps to prevent moisture and dust ingress
• Optional wooden crates for export
• Each bundle labeled with specifications, heat number and traceability
• Shipping: container (FCL/LCL), truck or air freight

Customization Capability
Custom dimensions and precision: ID 50–250 mm; length up to 13 m or cut-to-length; wall thickness per project; custom boring, ports, threads, grooving, chamfering, face milling, welding bevel prep; tolerance adjustments beyond H8 on request; outer diameter control within ±0.50 mm; enhanced straightness and roundness achievable; surface treatments: long-term oil sealing, phosphating or pickling; custom labeled ends and packaging.

Certifications & Compliance
Manufactured under strict quality systems with material test certificates (MTC) per batch. Compliant with DIN 2391, EN 10305-1, ASTM A519. Third-party inspection support available (SGS, TUV, BV). Packaging and anti-rust processes comply with relevant phytosanitary and environmental standards.

Global Service & Support
Technical support on material selection and application, after-sales consultation, quality response and on-time delivery with progress updates to customers worldwide.

Features / Technical specifications

• Material: ST52 seamless steel
• Inner diameter range: 50 mm – 250 mm
• Wall thickness: 5 mm – 50 mm (as required)
• Max. tube length: 13 m
• ID tolerance: H8 (stricter available)
• Surface roughness (Ra): ≤ 0.4 μm (typical 0.1–0.4 μm)
• Straightness: 0.5–1 mm per 1000 mm
• Tensile strength: ≥ 580 MPa
• Yield strength: ≥ 460 MPa
• Elongation: ≥ 22%
• Standards: DIN 2391, EN 10305, ASTM A519
• MOQ: 1 Ton
• Typical delivery: 7–10 days
• Daily production capacity: 30 tons
• Packing options: steel-strapped bundles, anti-rust oil, plastic caps, wooden crates