Top 10 China Flange Adaptor Manufacturers in 2026
Introduction
Finding the right China flange adaptor manufacturer can be challenging for hydraulic equipment manufacturers, distributors, and industrial buyers. The term “flange adaptor” covers a wide range of products, from general pipe connections to specialized hydraulic components. For hydraulic applications, however, the requirements are much more specific: flange standards, pressure ratings, machining accuracy, sealing performance, material selection, and OEM capability can all affect system reliability.
This list focuses specifically on China flange adaptor manufacturers serving hydraulic systems, including suppliers of SAE flange adapters, Code 61 and Code 62 connections, split flange components, and related hydraulic fittings. It is intended for procurement teams looking to compare manufacturers rather than simply browse a large supplier directory.
The manufacturers below were selected based on product relevance, manufacturing capabilities, hydraulic flange expertise, applicable standards, customization options, export experience, and the quality of publicly available manufacturer information.
Table of Contents
- How We Selected the Top China Flange Adaptor Manufacturers
- Top 10 China Flange Adaptor Manufacturers
- 1. HGW Hydraulic
- 2. Laike Hydraulics
- 3. Yuyao Jiayuan Hydraulic Fitting Factory
- 4. FITSCH
- 5. NJ Hydraulic
- 6. YH Hydraulic
- 7. Taizhou Haodema Machinery
- 8. Shihui Hydraulic
- 9. Hand Hydraulic
- 10. Airfit Pneumatic & Hydraulic
- Comparison of China Flange Adaptor Manufacturers
- How to Choose a China Flange Adaptor Manufacturer
- Why Source Flange Adaptors from China?
- Why Choose HGW Hydraulic?
- Frequently Asked Questions (FAQ)
How We Selected the Top China Flange Adaptor Manufacturers
A reliable flange adaptor supplier should offer more than a broad product catalog. Buyers should consider whether the manufacturer has genuine experience producing hydraulic connection components and whether its products are compatible with the standards used in the target hydraulic system.
The selection criteria for this list include:
- Hydraulic flange expertise: The manufacturer should offer flange adapters or closely related hydraulic flange products.
- Manufacturing capability: CNC machining, forging, production equipment, quality inspection, and manufacturing scale were considered where verified information was available.
- Standards coverage: SAE J518, ISO 6162, Code 61, Code 62, DIN, JIS, BSP, and other relevant standards can be important for international hydraulic systems.
- OEM and customization: Custom dimensions, connection combinations, materials, finishes, and private-label production can be important for OEM buyers.
- Product range: Companies with complementary hydraulic adapters, hose fittings, clamps, or related components may offer procurement advantages.
- Industry experience and export capability: Established manufacturing experience and international market exposure were also considered.
Because “flange adaptor” can also refer to general-purpose pipe components, this ranking concentrates on manufacturers with a demonstrable connection to hydraulic flange adapters and hydraulic fitting systems.
Top 10 China Flange Adaptor Manufacturers
1. HGW Hydraulic
HGW Hydraulic
Best for: OEM hydraulic flange adapters, fittings, and high-volume custom orders
HGW Hydraulic is a Chinese manufacturer of hydraulic fittings and connection components with a strong product fit for buyers sourcing flange adaptors. Established in 1996, the company has developed a broad hydraulic product portfolio covering adapters, hose fittings, hydraulic flange fittings, and related components.
Its flange range includes products associated with SAE J518 and ISO 6162, including Code 61 and Code 62 flange configurations. This makes the company particularly relevant for industrial and mobile hydraulic applications where standardized high-pressure flange connections are required.
HGW also operates a large-scale manufacturing system with CNC machining capabilities and supports OEM and customized production. For buyers, this is important when standard catalog parts need to be adapted to specific equipment designs, connection requirements, or purchasing specifications.
Main products:
- Hydraulic flange fittings
- Hydraulic adapters
- Hose fittings
- SAE flanges
- Code 61 and Code 62 flange components
Why consider HGW: Its combination of long-term hydraulic fitting experience, broad product coverage, manufacturing capability, and OEM support makes it a strong option for buyers looking for a long-term China flange adaptor manufacturing partner.
2. Laike Hydraulics
Laike Hydraulics
Best for: Broad hydraulic adapter and flange fitting selections
Laike Hydraulics is an established Chinese hydraulic fitting manufacturer with a broad range of adapters, hose fittings, and flange-related products. Its official product catalog includes a dedicated Hydraulic Flange Adapters category, making it one of the more directly relevant suppliers for this search.
The company lists carbon steel and stainless steel options and specifies surface treatment and salt-spray testing information for its products. It also states that OEM and ODM requirements are welcome.
For buyers handling multiple hydraulic connection requirements, Laike's broader adapter portfolio can be useful because flange products can be sourced alongside other hydraulic adapters and fittings.
Main products:
- Hydraulic flange adapters
- SAE flange adapters
- Hydraulic fitting adapters
- NPT adapters
- Hose fittings and related components
Why consider Laike: Its dedicated flange adapter range, material options, surface-treatment information, and OEM/ODM support make it a practical candidate for buyers seeking a broad hydraulic fitting portfolio from China.
3. Yuyao Jiayuan Hydraulic Fitting Factory
Yuyao Jiayuan Hydraulic Fitting Factory
Best for: SAE hydraulic flange adapters and multi-standard hydraulic connections
Yuyao Jiayuan Hydraulic Fitting Factory was established in 1998 and specializes in hydraulic pipe connections and engineering machinery accessories. Its official website specifically lists SAE Hydraulic Flange Adapters as part of its SAE flange coupling product range.
Jiayuan's flange portfolio covers several connection configurations, including JIC, BSP, DIN, ORFS, and other hydraulic adapter combinations. Its product pages reference SAE J518 and ISO 6162, with Code 61 and Code 62 flange configurations available. Some products also combine SAE flange connections with DIN or JIC connection standards, which can be useful for equipment designed around mixed international specifications.
The company states that it is certified to ISO 9001 and IATF 16949 and produces hydraulic connections meeting DIN, ISO, SAE, JIS, and BSP standards.
Main products:
- SAE flange adapters
- Code 61 and Code 62 flange connectors
- Hydraulic adapters
- Tube fittings
- Hose fittings and manifold components
Why consider Jiayuan: Its combination of dedicated SAE flange products, international standards coverage, and documented quality certifications makes it particularly relevant to OEM and industrial buyers requiring standardized hydraulic connections.
4. FITSCH
FITSCH
Best for: Multi-standard SAE flange adapter solutions
FITSCH is a Ningbo-based supplier of hydraulic tube fittings, hose fittings, adapters, and flange components. Its product structure is particularly relevant to buyers searching for hydraulic flange adapters because the company maintains a dedicated SAE Flange Adapters category rather than treating flange products as a minor part of its general fitting range.
Its SAE flange adapter portfolio includes Code 61 and Code 62 configurations, with connection options for BSP, DIN, JIC, and ORFS systems. This can be useful when a hydraulic system needs to transition between a four-bolt SAE flange and another international connection standard.
FITSCH also states that it provides custom fittings for OEM requirements and has more than 20 years of experience in hydraulic fittings, adapters, flanges, and related industrial components.
Main products:
- SAE flange adapters
- SAE flange clamps
- Weld flanges
- Hydraulic tube fittings and hose fittings
- JIC fittings, DIN fittings, and custom hydraulic fittings
Why consider FITSCH: Its strength is the combination of SAE flange coverage and multiple adapter-end configurations, making it a suitable candidate for equipment manufacturers working with mixed hydraulic standards.
5. NJ Hydraulic
NJ Hydraulic
Best for: Hydraulic adapters, flange fittings, and split flange kits
NJ Hydraulic focuses on hydraulic adapters and fittings and offers a particularly broad product structure for buyers sourcing different connection components from one supplier. Its product catalog includes flange fittings, flange adapters, split flange kits, and split flange plugs, alongside SAE, BSP, metric, JIS, NPT, ORFS, and JIC fittings.
This breadth can be valuable for hydraulic equipment manufacturers that need flange adapters together with conventional threaded adapters or hose connections. Rather than specializing in only one flange configuration, NJ positions its products around several international hydraulic fitting systems.
For procurement teams, the main advantage is the possibility of consolidating multiple fitting categories with one China-based supplier. Buyers should still confirm the exact flange standard, pressure requirement, material, dimensions, and testing documentation for each project before placing a production order.
Main products:
- Flange adapters
- Split flange kits
- SAE adapters
- BSP and metric adapters
- JIC fittings, ORFS fittings, hose fittings, and stainless-steel fittings
Why consider NJ Hydraulic: Its broad hydraulic adapter portfolio and dedicated flange product categories make it a practical option for buyers looking for a wider hydraulic fitting sourcing program rather than a single flange component.
6. YH Hydraulic
YH Hydraulic
Best for: Hydraulic hose assemblies and flange adapter combinations
YH Hydraulic was established in 2005 and is based in Ningbo, China. The company manufactures and supplies hydraulic fittings, adapters, hoses, hose assemblies, ferrules, quick couplings, and related hydraulic equipment. Its product range includes dedicated Hydraulic Flange Adapter products as well as higher-pressure flange fittings.
YH's broader product portfolio can be useful when flange adapters are being purchased as part of a complete hydraulic hose assembly rather than as an isolated component. The company states that carbon steel is its main material, while stainless steel, aluminum, copper, and other materials can also be supplied for applicable products.
OEM production is another relevant capability. YH states that products can be customized according to customer drawings or samples, which can help equipment manufacturers source non-standard configurations.
Main products:
- Hydraulic flange adapters
- 6000 PSI flange fittings
- Hose fittings and hydraulic adapters
- Hose assemblies and ferrules
- Quick couplings and hydraulic machines
Why consider YH Hydraulic: Its combination of flange fittings, adapters, hose assemblies, and OEM services makes it particularly relevant for buyers sourcing multiple components for hydraulic line assemblies.
7. Taizhou Haodema Machinery
Taizhou Haodema Machinery
Best for: Code 61/62 flange adapters and broad hydraulic fitting programs
Taizhou Haodema Machinery is a Zhejiang-based hydraulic fitting manufacturer established in 2005. The company focuses on the R&D, production, and distribution of hydraulic fittings and hose assemblies and maintains dedicated categories for Hydraulic Flange Adapters and SAE hydraulic adapters.
Its product catalog includes hydraulic flange products such as 87392, 87311, and 87912 series components, alongside DIN, BSP, SAE, and other hydraulic adapters. Haodema states that its products cover mainstream standards including ISO, DIN, SAE, and JIS, while its product range is supported by stock and customization services.
The company also describes CNC machining and material inspection processes for its hydraulic fittings. According to its published information, raw materials and sealing components are controlled before production, while fittings are precision-machined and inspected for dimensional accuracy.
Main products:
- Hydraulic flange adapters
- SAE adapters and DIN adapters
- Hose fittings
- Hydraulic valves, plugs, and ferrules
- Hose assemblies
Why consider Haodema: It combines a dedicated flange-adapter category with a broad hydraulic product range, making it suitable for distributors and equipment manufacturers with multiple fitting requirements.
8. Shihui Hydraulic
Shihui Hydraulic
Best for: High-volume hydraulic fitting production and customized components
Zhejiang Shihui Hydraulic Machinery is another Chinese manufacturer worth considering for buyers looking beyond individual catalog products and toward larger hydraulic fitting programs.
The company's product portfolio covers hydraulic fittings, adapters, flanges, hose fittings, and related connection components. Its manufacturing operation includes forging and CNC machining equipment, supported by an engineering and product-development capability.
For OEM buyers, this type of manufacturing setup can be more important than simply having a large online catalog. Flange adapters often require controlled machining of sealing surfaces, bolt-hole dimensions, threads, and connection interfaces, so production consistency becomes especially important for repeat orders.
Shihui also offers customized hydraulic components, allowing buyers to work from drawings, samples, or specified dimensions where standard catalog configurations are not sufficient.
Main products:
- Hydraulic flanges
- Flange adapters
- Hydraulic fittings and hose fittings
- Ferrules
- Customized hydraulic components
Why consider Shihui: Its combination of forging, CNC machining, engineering support, and a broad hydraulic fitting portfolio makes it a potential option for OEM and higher-volume sourcing projects.
9. Hand Hydraulic
Hand Hydraulic
Best for: SAE flange systems and hydraulic adapter customization
Cixi Zhouxiang Hand Hydraulic Co., Ltd. was established in 2001 and supplies hydraulic fittings to industrial customers. Its product portfolio includes hydraulic hose fittings, adapters, ferrules, hydraulic flanges, flange clamps, and quick couplings.
Its flange range covers 3000 PSI, 6000 PSI, and 9000 PSI hydraulic flange products, together with SAE flange clamps and other related components. More importantly for this list, Hand Hydraulic recently added a 1JFL Series JIC Male 74° Cone to L-Series Flange Hydraulic Adapter, covering multiple sizes and providing a direct example of its flange-to-adapter product capability.
The company also states that customized products can be manufactured according to customer requirements. This can be useful for buyers who need specific thread combinations, dimensions, or hydraulic connection configurations.
Main products:
- Hydraulic flange adapters
- SAE flange clamps and hydraulic flanges
- Hose fittings and ferrules
- Hydraulic adapters
- Quick couplings
Why consider Hand Hydraulic: Its combination of flange products, adapter configurations, pressure-rated components, and customization makes it relevant to buyers sourcing SAE hydraulic connection components.
10. Airfit Pneumatic & Hydraulic
Airfit Pneumatic & Hydraulic
Best for: Combined hydraulic and pneumatic fluid connection solutions
Airfit Pneumatic & Hydraulic supplies both pneumatic and hydraulic components and has a dedicated Flange Adapters and Kits product category. Its hydraulic flange products are designed around SAE J518 Code 61/Code 62 and ISO 6162 standards, providing compatibility with common international hydraulic flange systems.
The company states that its flange adapters are manufactured through its own production system and subjected to 100% inspection before shipment. Its published product information covers carbon steel, stainless steel, and ductile iron options, as well as straight, elbow, tee, cross, and bulkhead configurations.
Airfit also reports ISO 9001 certification, TUV test reports, CNC equipment, inspection facilities, and a production workforce supporting its hydraulic and pneumatic product lines.
Main products:
- Hydraulic flange adapters and kits
- SAE hydraulic fittings
- Pneumatic fittings
- Hydraulic hose fittings
- Valves and related fluid-control components
Why consider Airfit: It is a suitable choice for buyers that need hydraulic flange adapters alongside broader pneumatic and hydraulic connection products, particularly where standardized SAE and ISO flange compatibility is required.
Comparison of Top 10 China Flange Adaptor Manufacturers
Selecting the right partner requires balancing standard coverage, OEM flexibility, and manufacturing scale. The table below offers a direct summary of each leading supplier's core capabilities:
| Manufacturer | Main Focus | Flange / Adapter Range | Standards or Formats | OEM / Custom | Best For |
|---|---|---|---|---|---|
| HGW Hydraulic | Hydraulic fittings and adapters | SAE, Code 61/62, flange fittings | SAE / ISO | Yes | OEM and bulk orders |
| Laike Hydraulics | Hydraulic fittings and adapters | Hydraulic flange adapters | Multiple international standards | Yes | Broad product selection |
| JIAYUAN | Hydraulic fittings | SAE flange adapters, Code 61/62 | SAE / ISO / DIN / JIS / BSP | Yes | Multi-standard systems |
| FITSCH | Hydraulic fittings | SAE flange adapters | SAE / DIN / JIC / ORFS / BSP | Yes | Mixed connection systems |
| NJ Hydraulic | Hydraulic adapters | Flange adapters and split flange kits | SAE / BSP / Metric / JIS | Yes | Consolidated sourcing |
| YH Hydraulic | Hose and hydraulic fittings | Flange adapters and high-pressure flange fittings | Hydraulic standards | Yes | Hose assemblies |
| Haodema | Hydraulic fittings | Flange adapters and SAE adapters | ISO / DIN / SAE / JIS | Yes | Broad hydraulic programs |
| Shihui Hydraulic | Hydraulic fittings | Flanges and adapters | Multiple configurations | Yes | High-volume production |
| Hand Hydraulic | Hydraulic fittings | Flanges, clamps and adapters | SAE | Yes | SAE flange systems |
| Airfit | Pneumatic and hydraulic fittings | Flange adapters and kits | SAE J518 / ISO 6162 | Yes | Hydraulic + pneumatic sourcing |
How to Choose a China Flange Adaptor Manufacturer
Selecting a flange adaptor manufacturer should go beyond comparing unit prices. For hydraulic applications, the wrong flange configuration or inconsistent machining can lead to leakage, premature component failure, or compatibility problems during installation. Procurement teams should therefore evaluate suppliers against the technical and commercial requirements of the complete hydraulic system.
Check SAE and ISO Compatibility
The first step is confirming which flange standard the equipment requires. SAE J518 and ISO 6162 are widely used references for hydraulic flange connections, while Code 61 and Code 62 represent different pressure and dimensional configurations.
Buyers should confirm the exact flange series, port size, bolt pattern, sealing arrangement, and connection type rather than assuming that two products described simply as “SAE flanges” are interchangeable.
Confirm Material and Surface Treatment
Carbon steel is widely used for hydraulic flange adapters because of its combination of strength, machinability, and cost. Stainless steel can be considered where greater corrosion resistance is required.
Surface treatment is equally important. Zinc plating and other protective finishes can improve corrosion resistance during storage, transportation, and service. Buyers should request material specifications and surface-treatment requirements when preparing an RFQ.
Evaluate Machining and Quality Inspection
Hydraulic flange adapters depend on dimensional accuracy at several critical interfaces, including threads, sealing surfaces, bolt holes, and flange faces. A manufacturer with CNC machining and systematic inspection capabilities can provide better consistency for repeat production.
Essential Quality Inspection Steps:
- Incoming raw material inspection
- Precision dimensional checking
- Surface finish and thread accuracy verification
- Pressure testing where applicable
- Traceability procedures for repeat orders
Confirm OEM and Customization Capability
Standard flange adapters cover many applications, but OEM equipment may require non-standard thread combinations, dimensions, materials, surface treatments, or markings. A capable China flange adaptor manufacturer should be able to review drawings or samples and confirm whether the requested configuration can be produced consistently.
For repeat orders, it is also useful to establish an approved drawing and inspection specification before mass production begins.
Compare MOQ, Lead Time and Export Support
Price should be evaluated together with minimum order quantity, production lead time, packaging, documentation, and shipping support. A slightly higher unit price may be worthwhile if the supplier offers more reliable quality control and shorter replenishment cycles.
For international buyers, clear communication and experience with export orders can also reduce the risk of specification errors and delivery problems.
Why Source Flange Adaptors from China?
China has developed a large manufacturing base for hydraulic fittings, adapters, flanges, and related fluid-connection components. This gives international buyers access to suppliers ranging from specialized fitting factories to larger manufacturers with extensive CNC machining and forging capabilities.
One advantage is product variety. Buyers can often source SAE, metric, BSP, JIC, ORFS, DIN, and other connection configurations from the same manufacturing region. This can simplify supplier qualification when a hydraulic system contains multiple fitting standards.
China is also attractive for OEM and custom production. Manufacturers can often work from technical drawings, samples, or customer specifications, allowing equipment producers to develop application-specific connection components instead of relying entirely on off-the-shelf parts.
Another consideration is production scalability. Established manufacturers can support both standard catalog orders and larger repeat programs, while suppliers with integrated machining, forging, finishing, and inspection processes can provide greater control over production consistency.
However, China sourcing still requires proper supplier evaluation. Buyers should verify product standards, materials, quality documentation, manufacturing capabilities, and sample performance before committing to large production volumes.
Why Choose HGW Hydraulic?
For buyers specifically looking for a China flange adaptor manufacturer, HGW Hydraulic offers a combination of product depth and manufacturing experience that is well suited to industrial hydraulic applications. To help maintain fluid power efficiency across various operating pressure requirements, exploring a specialized hydraulic product portfolio provides a comprehensive foundation for system engineering.
Established in 1996, HGW has developed a broad hydraulic connection portfolio covering hydraulic adapters, hose fittings, flange fittings, and related components. Its flange product range includes SAE and ISO-related configurations, including Code 61 and Code 62 products.
The company's manufacturing system includes extensive CNC machining capabilities, supporting the dimensional consistency required for hydraulic fittings and flange components. This is particularly relevant for OEM buyers that need repeatable production rather than one-off sourcing.
HGW also supports customized and OEM requirements. Buyers can discuss specific connection combinations, dimensions, materials, surface treatments, or other project requirements with the manufacturer before production.
For procurement teams, another advantage is the ability to source related hydraulic components through one supplier. Instead of purchasing flange adapters separately from multiple fitting vendors, buyers can evaluate HGW's broader hydraulic fitting portfolio as part of a consolidated sourcing strategy.
Frequently Asked Questions (FAQ)
Q1 What is a hydraulic flange adaptor?
A hydraulic flange adaptor is a connection component used to join a hydraulic line, hose, tube, or port to a flanged connection. Depending on the design, it can connect different thread or port configurations while maintaining the required sealing and pressure performance.
Q2 What is the difference between Code 61 and Code 62 flanges?
Code 61 and Code 62 are SAE hydraulic flange configurations with different dimensional and pressure-related specifications. Code 62 is generally associated with higher-pressure applications than Code 61. Buyers should always confirm the required SAE J518 or ISO 6162 specification and system pressure before selecting a flange component.
Q3 How do I choose a China flange adaptor manufacturer?
Start by checking whether the manufacturer produces the specific hydraulic flange configuration required by the application. Then evaluate applicable standards, materials, machining capability, quality inspection, OEM support, production capacity, and export experience. Request technical drawings, samples, and relevant quality documentation before placing a large order.
Q4 Can Chinese manufacturers produce custom hydraulic flange adapters?
Yes. Many hydraulic fitting manufacturers in China provide OEM and customized production. Depending on the supplier, customization may include dimensions, thread combinations, materials, surface treatment, markings, and other specifications. Buyers should provide a detailed drawing or sample and confirm tolerances and inspection requirements before production.
Conclusion
Choosing the right supplier is ultimately about more than finding the lowest quotation. Product compatibility, machining accuracy, material quality, manufacturing consistency, and OEM support all influence the long-term reliability of a hydraulic flange connection.
The manufacturers in this list provide different combinations of flange adapters, hydraulic fittings, standards, customization, and production capabilities. Buyers should compare suppliers according to their specific application, required flange standard, order volume, and quality requirements.
For OEMs, distributors, and industrial buyers seeking a reliable China flange adaptor manufacturer, HGW Hydraulic provides hydraulic flange fittings, adapters, hose fittings, and customized hydraulic connection solutions.
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