Flange Product
Our hydraulic flanges are precision-engineered for reliability and durability across a wide range of industrial applications. Compliant with international standards such as SAE J518, ISO 6162 / 6164, and JB/ZQ4187-97, these flanges ensure compatibility and performance in both standard and demanding hydraulic systems.
Key Features:
- Material & Construction:
- Non-welded carbon steel: 45#
- Welded carbon steel: 20#
- Stainless steel: AISI 304 / 316 / 321
- Working temperatures: -20°C to 90°C
- Surface Protection:
- Non-welded carbon steel: zinc-plated ≥8μm
- Welded carbon steel: anti-rust oil coating, weld-ready
- Stainless steel: natural finish
- Sealing & Fasteners:
- O-ring sealing (NBR; FKM optional)
- High-strength bolts (12.9 grade) with nuts
- Spring washers included; customization available
- Applications: Mobile hydraulics, heavy machinery, pumps, industrial pipelines
Available Types: Flange Clamps · Welded Pipe Flange Assemblies · Transition Adapters · Pump Port Flanges · 24° Cone Flanges · Socket Weld Flanges · BSP / NPT Thread Flanges · Butt Weld Flanges · Slip-On Flanges · Blind Flanges · Square Flanges
Technical Specifications
| Category | Specification |
|---|---|
| Standards | SAE J518, ISO 6162 / 6164, JB/ZQ4187-97 |
| Working Temperature | -20°C to 90°C |
| Material | Non-welded carbon steel: 45# Welded carbon steel: 20# Stainless steel: AISI 304 / 316 / 321 |
| Surface Treatment | Zinc-plated ≥8μm (ISO 9227, 72h salt spray) Anti-rust oil coating (welded, weld-ready) Stainless steel: natural corrosion resistance |
| Sealing | O-ring sealing (NBR standard, FKM optional) |
| Bolts & Fasteners | 12.9 grade high-strength hex bolts (black phosphate) 8 grade nuts (black phosphate) Spring washers included (customizable) |
| Applications | Mobile hydraulics, heavy machinery, pumps, industrial pipeline systems |
Typical Applications
Construction Machinery
Reliable Hydraulic Connections for Heavy Equipment
Hydraulic flanges are widely used in construction machinery where durability, vibration resistance, and reliable sealing are critical. Their standardized interface ensures quick installation and stable performance in demanding outdoor environments.
Typical applications include:
Excavators, loaders, and road construction equipment
Hydraulic cylinder connection systems
Pump and valve block interface connections
High-vibration and heavy-load hydraulic circuits
Mining Equipment
Built for Harsh and High-Pressure Environments
In mining environments, hydraulic flanges are required to withstand high pressure, harsh conditions, and continuous operation. Their robust construction and corrosion resistance make them ideal for underground and open-pit applications.
Typical applications include:
Hydraulic systems in mining machinery and crushers
High-pressure fluid transfer pipelines
Dust and moisture exposed hydraulic circuits
Heavy-duty equipment requiring long service life
Hydraulic Pump Systems
Efficient and Leak-Free Fluid Transmission
Hydraulic flanges play a key role in pump systems by ensuring leak-free connections and efficient fluid transmission. Their compatibility with international standards allows seamless integration with pumps, motors, and control systems.
Typical applications include:
Hydraulic pump inlet and outlet connections
Integration with valve manifolds and control units
Oil circulation and pressure control systems
Compact hydraulic power units
Industrial Hydraulic Systems
Stable Performance Across Diverse Applications
In industrial hydraulic systems, flanges ensure reliable sealing and structural strength across a wide range of operating conditions. They are suitable for both standard and customized hydraulic installations.
Typical applications include:
Manufacturing and automation equipment
Hydraulic presses and forming machines
Fluid power transmission systems
Custom hydraulic stations and test benches
Why Choose Our Hydraulic Flanges
Engineered for performance, reliability, and long-term industrial supply
Proven Industrial Quality
All flange components are manufactured in accordance with international standards such as SAE and ISO, ensuring consistent quality, dimensional accuracy, and long-term operational reliability in demanding hydraulic systems.
Reliable Material & Surface Protection
We use certified carbon steel and stainless steel materials combined with controlled surface treatments such as zinc plating and anti-corrosion processes to ensure durability even in harsh environments.
Complete Standard & Custom Solutions
From standard SAE flanges to customized hydraulic connection solutions, we support OEM and non-standard requirements based on your system design and application conditions.
Strong Supply & Fast Response
With stable production resources and efficient supply chain management, we ensure reliable delivery timelines and fast response to urgent project requirements.
Engineering Background Support
Backed by practical experience in hydraulic system design and maintenance, we understand real application needs and provide technically suitable solutions—not just products.
Complete Matching Components
We provide not only flanges, but also matching bolts, seals, and related hydraulic components, ensuring compatibility and simplifying your procurement process.
Need a Reliable Hydraulic Flange Solution?
Send us your requirements or drawings — our engineering team will provide a suitable solution and quotation.
Whether you need standard SAE flanges or customized hydraulic connection solutions, we are ready to support your project with fast response and professional technical assistance.
