1. Material & Standards
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Material: Carbon Steel / Stainless Steel (304, 316L)
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Standards: DIN 3852 (Hydraulic Thread), DIN EN 10305 (Seamless Precision Steel Tube)
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Thread Type: Metric Thread / BSPP (ISO 228-1) according to DIN 3852
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Coating: Zinc-Plated, Black Oxide, or Custom Anti-Corrosion
2. Key Specifications
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Size Range: OD 6mm – 50mm
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Wall Thickness: 1mm – 8mm (Custom Available)
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Working Pressure: Up to 40 MPa (400 bar) depending on size & grade
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Connection Type: Threaded End (DIN 3852) with sealing washer or O-ring
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Surface Finish: Bright Annealed / Galvanized / Phosphated
3. Features & Benefits
✔ High Pressure Resistance – Designed for hydraulic systems in construction machinery
✔ Reliable Sealing – DIN 3852 threaded connections ensure leak-proof performance
✔ Corrosion Protection – Zinc or phosphate coating extends service life
✔ Precision Tolerance – Seamless tubes ensure smooth flow and reduced pressure loss
4. Applications
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Hydraulic Systems in Excavators, Loaders, Cranes
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Industrial Hydraulic Power Units
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Construction Machinery & Mining Equipment
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Agricultural Machinery Hydraulic Circuits
5. Certifications
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ISO 9001 / ISO 14001
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DIN/EN Standard Compliance
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Hydraulic Pressure & Leakage Test Certified
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SGS / BV Third-Party Inspection Available
Frequently Asked Questions (FAQ)
1. Are you a manufacturer or trading company?
We are a manufacturer with our own factory located in Hebei, China.
2. What materials do you offer?
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Stainless Steel: 304, 304L, 316, 316L, 321, etc.
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Carbon Steel: ASTM A105, ASTM A350 LF2, Q235, Q345, etc.
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Alloy Steel: ASTM A182 F11, F22, F5, etc.
3. Which standards do your products comply with?
ASME B16.5, ANSI, ASTM, DIN, JIS, EN, GB — with third-party inspection available.
4. Do you support OEM/ODM customization?
Yes, we provide custom machining, coating, marking, and packaging based on your drawings.
5. What is your minimum order quantity (MOQ)?
MOQ is typically 1 piece for standard items; customized parts may vary.
6. Do you provide free samples?
Yes, free samples for standard sizes are available; buyers cover shipping cost.
7. What is your delivery time?
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In-stock: 3–5 working days
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Bulk/custom orders: 10–25 working days
8. How do you ensure product quality?
We perform full inspection: raw material verification, dimensional checks, pressure/leak tests, and surface finish inspection. Third-party testing is available upon request.
