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Expert in Hydraulic Cylinders & High-Purity Stainless Steel

Manufacturer of honed tubes, chrome-plated rods, UHP tubing, and ultra-high purity fittings with 30+ years of precision engineering excellence.

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About Sino-Alloy

Younglee Metal Precision Tube Co., Ltd is a leading Chinese manufacturer and supplier of high-purity and ultra-high purity (UHP) stainless steel tubing and fittings. Founded in 1997, we have over 30 years of experience in producing precision-engineered hydraulic components and high-performance stainless steel solutions.

Our product range includes honed hydraulic cylinder tubes, chrome-plated rods, ceramic-coated rods, HVOF and laser cladding solutions, pipe clamps, and full custom hydraulic cylinders. In 2010, we expanded into ultra-high purity (UHP) tubing and fittings, now exporting 60% of our products globally.

30+

Years of Experience

60K m²

Factory Area

230+

Employees

60%

Export Ratio

Factory Floor

Our Products

Precision-engineered hydraulic and high-purity stainless steel components for industrial, medical, semiconductor, and energy applications.

UHP Tubing

Ultra-High Purity (UHP) Tubing

Electropolished stainless steel tubing with Ra ≤ 0.25 μm surface roughness, ideal for semiconductor, pharmaceutical, and biotech applications.

  • • ASTM A269 / A270 compliant
  • • UHP cleaning & N2 purging
  • • Clean room packaging
UHP Fittings

Ultra-High Purity Fittings

High-integrity stainless steel fittings with excellent interchangeability with leading global brands.

  • • VCR, Face Seal, Tube-to-Tube
  • • Electropolished finish
  • • Leak-tight performance
Hydraulic Cylinder Tube

Honed Hydraulic Cylinder Tubes

Precision honed tubes with tight tolerances and excellent surface finish for smooth piston movement.

  • • ID tolerance: ±0.025mm
  • • Surface roughness: Ra ≤ 0.4 μm
  • • Custom lengths & diameters
Chrome Plated Rod

Chrome Plated Hydraulic Rods

High-hardness chrome-plated rods with excellent wear and corrosion resistance.

  • • Hardness: ≥ 60 HRC
  • • Chrome thickness: 25–50 μm
  • • Precision ground
Pipe Clamps

Pipe Clamps & Supports

Durable clamps for secure tubing and piping systems in hydraulic and industrial applications.

  • • Carbon steel & stainless steel
  • • Vibration-resistant design
  • • Custom configurations
Custom Hydraulic Cylinders

Custom Hydraulic Cylinders

Fully customized hydraulic cylinders designed to meet specific load, stroke, and environmental requirements.

  • • Double & single acting
  • • Integrated sensors available
  • • High-pressure designs
Ceramic Coated Rod

Ceramic Coated Hydraulic Rods

Advanced ceramic coating for extreme wear resistance and corrosion protection.

  • • Hardness: > 1200 HV
  • • Excellent adhesion
  • • Suitable for harsh environments
HVOF Coating

HVOF Coated Cylinder Rods

High-velocity oxygen fuel coating for superior durability and resistance to abrasion.

  • • WC-Co, Cr3C2-NiCr options
  • • Dense, low-porosity coating
  • • Extended service life
Laser Cladding Rod

Laser Cladding Cylinder Rods

Precision laser cladding with stainless steel or nickel alloys for high-performance applications.

  • • Minimal dilution
  • • Excellent metallurgical bond
  • • Custom alloy options
COAX Tubing & Fittings

COAX Stainless Steel Tubing & Fittings

Coaxial tubing systems for high-purity gas and liquid delivery with dual-wall safety.

  • • Inner & outer tube design
  • • Leak detection capability
  • • UHP compatible

Why Choose Us

Decades of engineering excellence, quality control, and customer-focused innovation.

High Quality

Zero-defect quality objective with strict inspection at every stage.

Competitive Prices

Cost-effective solutions without compromising on performance.

Custom Solutions

Tailored designs and flexible order quantities to meet your needs.

Fast Delivery

Efficient production and logistics for quick turnaround times.

30+

Years in Industry

60K

m² Factory Area

230+

Team Members

60%

Global Exports

Frequently Asked Questions

What materials do you use for UHP tubing?

We use high-quality 316L stainless steel with low carbon content and controlled impurities to meet ASTM A269/A270 standards.

Can you customize hydraulic cylinder designs?

Yes, we offer full customization including stroke length, bore size, mounting style, and integrated sensors.

What is the lead time for custom orders?

Typical lead time is 4–6 weeks depending on complexity and order volume. We provide updates throughout production.

Do you provide certifications with shipments?

Yes, we provide material test reports (MTR), inspection certificates, and compliance documentation upon request.

Get in Touch

Contact our team for product inquiries, custom solutions, or technical support.

Email

[email protected]

Phone

+86-18612-706695

Contact Person

Mr. Osmond Lee

Factories

Nancao Factory: 69#, Nancao Industrial Park, Yixing, Wuxi, Jiangsu, China
Huaxing Factory: 5#, East Huaxing Rd, Yixing, Wuxi, Jiangsu, China

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