Hanlong Mechanical Co., Ltd. | Precision Casting & Machining Solutions

About Hanlong Mechanical

Hanlong Mechanical Co., Ltd. has been a trusted supplier of high-quality OEM and aftermarket mechanical parts for over a decade. We serve the transportation, construction, petroleum, and industrial sectors with precision-engineered components that meet the highest standards.

Our commitment to perfect product quality and excellent service is the foundation of our business. This dedication has earned us a high customer satisfaction rate and long-term partnerships across the globe.

Over 10 years of industry experience
ISO-compliant manufacturing processes
Custom design and rapid prototyping

Our Products

High-precision mechanical components engineered for durability, performance, and reliability across multiple industries.

Precision Casting Parts

Investment casting and sand casting components with tight tolerances and excellent surface finish.

Material: Stainless Steel, Carbon Steel, Alloy Steel
Weight Range: 0.1kg – 50kg
Tolerance: ±0.05mm

CNC Machined Components

High-accuracy parts produced using advanced 3-5 axis CNC machining centers.

Processes: Milling, Turning, Drilling
Materials: Steel, Aluminum, Brass, Titanium
Surface Finish: Ra 0.8 – 3.2 μm

Turbocharger Components

OEM and aftermarket parts including housings, shafts, and wheels for diesel engines.

Application: Heavy-duty vehicles, marine, industrial
Materials: Inconel, Cast Iron, Forged Steel
Heat Resistant up to 1000°C

Custom Nozzle Ring Design

Nozzle Rings

Precision-engineered nozzle rings for turbochargers with optimized airflow dynamics.

Material: Nickel-based alloys
Blade Count: 12–24 vanes
Custom aerodynamic profiles

Hydraulic System Components

Hydraulic Parts

Valve bodies, pistons, and manifolds for construction and industrial equipment.

Pressure Rating: Up to 350 bar
Seal Compatibility: NBR, Viton, EPDM
Surface Treatment: Hard Chrome Plating

Pump & Compressor Parts

Rotary Equipment Parts

Impellers, rotors, and casings for pumps and compressors in oil & gas applications.

Corrosion-resistant alloys
Balanced to G2.5 at 3000 RPM
API 610 / ISO 13709 compliant

Construction Machinery Parts

Excavator & Loader Components

Durable pins, bushings, and linkage parts for heavy equipment.

Hardness: HRC 50–60
Wear-resistant surface treatment
OEM replacement compatibility

Custom OEM Solutions

Custom Design & Prototyping

End-to-end product development from CAD design to mass production.

3D Modeling & FEA Analysis
Prototype in 2–4 weeks
Low to high volume production

Shafts & Spindles

Precision Shafts

Ground and polished shafts for high-speed rotating equipment.

Diameter: 5mm – 200mm
Tolerance: h6 to h9
Surface Finish: Ra 0.4 μm

Valve Components

Industrial Valve Parts

Seats, stems, balls, and bodies for gate, globe, and ball valves.

Materials: SS304, SS316, Duplex, Bronze
Standards: API 6D, ISO 5208
Pressure Class: 150# to 2500#

Gear & Transmission Parts

Transmission Components

Gears, synchronizers, and shafts for automotive and industrial transmissions.

Module: 0.5 – 5
Heat Treatment: Carburizing, Induction Hardening
Accuracy: AGMA 9 to AGMA 12

Petroleum Industry Parts

Oil & Gas Equipment Parts

Components for drilling, extraction, and refining systems.

Materials: 13Cr, Super Duplex, Inconel 718
NACE MR0175 compliant
High pressure & corrosion resistance

Why Choose Hanlong Mechanical?

Delivering results, reliability, and rock-solid dependability for over a decade.

Unmatched Quality

ISO-standard processes, rigorous testing, and 100% traceability ensure every part meets exact specifications.

Fast Turnaround

Rapid prototyping, efficient production lines, and global logistics ensure on-time delivery.

Customer Satisfaction

Trusted by clients worldwide with long-term partnerships built on reliability and service excellence.

Engineering Support

Dedicated team for design optimization, material selection, and technical consultation.

Frequently Asked Questions

What industries do you serve?

We provide mechanical parts for the transportation, construction, petroleum, marine, and general industrial sectors.

Do you offer custom design services?

Yes, we offer full custom design, prototyping, and OEM manufacturing services based on your specifications and drawings.

What materials do you work with?

We process stainless steel, carbon steel, alloy steel, aluminum, brass, titanium, Inconel, and various high-performance alloys.

What is your production lead time?

Typical lead time is 4–6 weeks for production orders. Prototypes can be delivered in 2–4 weeks depending on complexity.

Do you provide quality certifications?

Yes, we provide material test reports (MTR), dimensional inspection reports, and can comply with ISO, API, and other standards.

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