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RUBefore shipment, every batch undergoes surface treatment checks, packaging verification, and functional testing to ensure products meet buyer requirements and maintain quality during transport.
1. Higher Standard Products
2. Shorter Production Cycle
3. More Corrosion Resistant
4. More Optional Delivery Methods
5. Comprehensive After Service
Gate Eye Pipe Fittings provide a reliable hinge connection for gates and handrail systems. Produced from durable cast iron or ductile iron, they are available in multiple surface treatments, ensuring excellent performance, longer service life, and suitability for various construction and industrial applications.
The Gate Eye Structural Pipe Fittings come in multiple sizes ranging from DN20 to DN40, making them suitable for different gate and railing systems. Each size is precisely cast and surface-treated to guarantee durability. Options include hot-dip galvanizing, double galvanizing, powder coating, and raw black finishes. Each fitting is coded for easy identification, ensuring accurate ordering, faster processing, and reliable assembly in both fencing and DIY structural applications.
| Pipe Info | |||
 | |||
| Material | Carbon Steel | ||
| Surface | Hot Galvanized / Powder Coating | ||
| Color | Refer To Pantone Color Card | ||
| Pipe Sizes Comparison | |||
| Size | Inner Diameter | Outer Diameter | |
| Nominal (DN) | in | mm | |
| T | 15 | 1/2" | 21.3 |
| A | 20 | 3/4" | 26.9 |
| B | 25 | 1" | 33.7 |
| C | 32 | 5/4" | 42.4 |
| D | 40 | 3/2" | 48.3 |
| E | 50 | 2" | 60.3 |
| Color only refers to the color of the powder coating. The powder coating of the pipe will allow for color tolerance, Kindly contact us for details. The quality of the tube will meet the usage requirements in most scenarios. For special scenarios, Kindly contact us for performance testing. | |||
| Basic Info Table of Fittings | |||||||||||
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| Name | 138 Gate Eye Structural Pipe Fittings | ||||||||||
| Material | Malleable Iron / Ductile Iron | ||||||||||
| Surface | Hot-dip Galvanized / Double Galvanized / Powder Coating / Raw Black | ||||||||||
| Color | Refer To Pantone Color Card | ||||||||||
| Pipe Sizes Comparison | Surface Finishing & Code | Dimensions(mm) | |||||||||
| Size | DN | in | mm | Hot-dip Galvanized | Double Galvanized | Powder Coating | Raw Black | a | b | C | D |
| A | 20 | 3/4" | 26.9 | HM-G-138-A | HM-D-138-A | HM-PC-138-A | HM-B-138-A | 30 | 25 | 14 | |
| B | 25 | 1" | 33.7 | HM-G-138-B | HM-D-138-B | HM-PC-138-B | HM-B-138-B | 33 | 25 | 14 | |
| C | 32 | 5/4" | 42.4 | HM-G-138-C | HM-D-138-C | HM-PC-138-C | HM-C-138-C | 38 | 25 | 14 | |
| D | 40 | 3/2" | 48.3 | HM-G-138-D | HM-D-138-D | HM-PD-138-D | HM-B-138-D | 41 | 25 | 14 | |
Gate Eye Structural Pipe Fittings are designed to connect gates to posts securely while ensuring smooth rotation. They are a key component in railing, fencing, and DIY structural systems, often paired with gate hinges for complete function. Manufactured with precision and strict quality standards, these fittings feature durable materials, surface treatments, and accurate sizing. HULK Metal provides versatile solutions that adapt to various environments while ensuring longer service life and easier installation.
A Gate Eye Structural Pipe Fitting is a specialized component used as the hinge mechanism for gates in fences, railings, and DIY structures. It allows the gate to swing smoothly by integrating a rotating connection with the supporting post. Typically, the gate eye must be used in combination with a gate hinge (fitting 140), and a standard gate installation usually requires two sets to achieve proper balance and function.
The structure of the gate eye consists of a circular ring slightly larger than the pipe's outer diameter. This ensures a snug but adjustable fit around the pipe. It is equipped with internal hex bolts that fasten the fitting firmly to the pipe at the desired position, preventing unwanted movement. The eye hole at the center is fixed in size, ensuring consistency and reliability in installation.
HULK Metal produces gate eye fittings using durable cast iron, ductile iron, stainless steel, or aluminum, offering flexibility for different applications and environments. When combined with appropriate surface treatments such as hot-dip galvanizing or powder coating, they provide higher corrosion resistance and longer service life. This makes them suitable not only for outdoor fencing and railing projects but also for versatile DIY structural applications.
Gate Eye Pipe Fittings are available in cast iron, stainless steel, and aluminum, each offering unique advantages for specific projects.
Cast iron gate eye fittings are produced using sand casting, offering excellent strength and affordability. They are widely used in heavy-duty fencing and railing projects where durability is a top priority. Cast iron is suitable for bulk orders with consistent quality.
Stainless steel gate eye fittings are manufactured using investment casting, ensuring excellent corrosion resistance and a refined finish. They are ideal for coastal or humid environments and projects requiring a polished appearance. Stainless steel fittings provide a longer service life.
Aluminum gate eye fittings are produced by die casting, offering lightweight strength and excellent resistance to rust. They are commonly used in DIY structures and lightweight gate systems. Aluminum fittings are also easier to transport and install compared to heavier metals.
Different surface treatments enhance the performance of gate eye pipe fittings, making them suitable for diverse installation environments and service requirements.
Hot-dip galvanizing forms a thick zinc coating that offers excellent corrosion resistance and durability, especially in outdoor environments. It provides long-lasting protection against rust and is suitable for gates and fences exposed to rain, moisture, or industrial atmospheres. This treatment is widely chosen for bulk orders due to its balance of cost and performance.
Double-coating galvanizing adds an extra protective layer over standard galvanizing, significantly improving corrosion resistance. It is recommended for projects in coastal regions or areas with high humidity. This process ensures stronger adhesion of the zinc layer, creating a smoother finish that resists wear and enhances the fitting's overall service life in demanding applications.
Powder coating offers both protective and decorative benefits. It provides a uniform, durable finish available in various colors, making it ideal for projects requiring a specific appearance. Beyond aesthetics, powder-coated surfaces resist scratches and corrosion, making them perfect for railings, fences, and DIY structures in residential, commercial, or public spaces.
Ensure the pipe's outer diameter matches the gate eye's inner ring size.
Choose a surface treatment suitable for the intended environment.
Verify compliance with local handrail or gate installation standards.
Gates and fences in residential or commercial projects
Railing systems for safety and access control
DIY structures requiring rotational or hinge functions
A: Our quality control includes a fully equipped inspection center, dimensional checks, surface treatment testing, and load-bearing tests. Every gate eye pipe fitting is verified under a strict ISO 9001 quality assurance system to ensure it meets global standards.
A: Pricing is based on product quality. With the same quality, HULK Metal offers more competitive prices. Large-volume orders receive additional discounts due to optimized production and logistics, helping you achieve both cost savings and reliable supply.
A: The MOQ depends on the product size and material. Generally, cast iron models have lower MOQs since we hold ready molds. For stainless steel or aluminum, new mold development may be required. Contact us for a detailed quotation.
A: Delivery cycles vary depending on your order requirements. Typically, production takes around 30 days. Larger orders often increase efficiency through planned scheduling. In most cases, the delivery time will not exceed 45 days, ensuring faster project progress.
A: We offer hot-dip galvanizing, double-coating galvanizing, and powder coating in customized colors. Standard finishes are always in stock, while custom colors require a minimum order quantity. Each surface finish is carefully tested to meet durability and appearance requirements.
A: HULK Metal supplies clients in over 50 countries, including Europe, North America, South America, Africa, and Southeast Asia. Our logistics team offers reliable, cost-effective freight solutions, ensuring timely delivery regardless of the destination or project scale.
A: We produce gate eye structural pipe fittings in cast iron, stainless steel, and aluminum. Cast iron models are most common due to ready molds. Stainless steel and aluminum require mold making for OEM orders, offering flexible customization options.
A: HULK Metal provides gate eyes in DN20 to DN40, ensuring compatibility with a wide range of pipes and railing systems. Each size is precisely coded for easy identification, making selection, ordering, and installation straightforward for bulk buyers.
A: Focus on supplier experience, certification, material quality, and surface treatment capability. Ensure they have ISO 9001 and global certifications. Evaluate their production capacity and after-sales service. A trusted supplier guarantees consistent quality, stable supply, and long-term cooperation.
A: We accept T/T, L/C, and other secure international payment methods. Delivery terms include FOB, CIF, and DDP depending on your needs. Our experienced team helps arrange logistics, ensuring you get goods faster with reduced costs.
HULK Metal ensures that every Gate Eye Structural Pipe Fitting meets higher international standards through a rigorous inspection process. From raw material testing to final pre-shipment checks, our quality control team applies advanced equipment and strict procedures. Dimensional accuracy, surface treatment quality, and strength are fully verified. This guarantees that bulk buyers receive consistent, durable, and reliable fittings ready for immediate use in various railing and gate projects.
Before shipment, every batch undergoes surface treatment checks, packaging verification, and functional testing to ensure products meet buyer requirements and maintain quality during transport.
Each fitting is measured with precision tools to ensure size consistency, accurate ring diameter, and correct alignment with pipes, preventing installation issues and ensuring seamless project assembly.
Gate Eye fittings are tested under simulated working conditions to verify hinge function, load capacity, and durability, ensuring reliable performance in long-term applications.
Final inspection confirms that the ordered quantity matches purchase requirements. This step eliminates shortages or excesses, ensuring smooth inventory management for bulk buyers.
HULK Metal operates closely partnered factories that specialize in casting, machining, and surface treatments for structural pipe fittings. Each factory follows ISO 9001 standards and strict quality protocols. With advanced machinery, skilled technicians, and a dedicated QC team, we deliver gate eye fittings that meet CE, GB, and TUV certifications. Our integrated supply chain ensures shorter production cycles, higher efficiency, and reliable bulk delivery for global buyers.
Choosing HULK Metal means choosing a reliable partner with stronger supply capability. We provide Gate Eye Structural Pipe Fittings manufactured under ISO 9001 with CE, GB, and TUV certifications. With faster production cycles, better corrosion resistance, shorter delivery times, and comprehensive after-service, we ensure every bulk buyer gets higher standard products and a more convenient purchasing experience. HULK Metal helps you reduce risks, control costs, and complete projects with greater efficiency.
Here you can find articles that share more knowledge about Gate Eye Pipe Fittings, structural pipe systems, and related applications. Each article provides practical insights into installation, surface treatments, and project tips, helping you understand the advantages and usage of our fittings more clearly. Whether you are looking for technical guidance or project inspiration, these articles will give you valuable information to support your decisions and enhance your purchasing experience with HULK Metal.
Besides Gate Eye Pipe Fittings, HULK Metal manufactures a wide range of structural pipe fittings for bulk buyers worldwide. Our product line includes base flanges, handrail brackets, tee fittings, elbow fittings, and gate hinges, all produced under strict quality standards. Each fitting is available with different surface treatments and sizes, making them suitable for various railing, fencing, and DIY systems. By offering complete solutions, HULK Metal supports your projects with consistent supply and higher standard services.
Our handrail bracket structural pipe fittings have multi-type surface treatments to prevent corrosion, precise dimensions, and a strong load-bearing capacity. They provide a longer service life and a more secure installation, making them perfect for outdoor safety rails, balconies, and staircases.
The Internal Swivel Tee Structural Pipe Fitting allows a 360 deg rotation around the connection point, making it ideal for angled rail systems. Manufactured from malleable iron or ductile iron with multiple finish options, it provides stronger performance and longer service life.
The Three Socket Angle Tee Structural Pipe Fitting is an essential component for angled guardrails and handrails. It connects two top rails to an upright post with adjustable angles from 0 to 11 degrees, ensuring both safety and flexibility.
The Slope Short Tee is specially designed for guardrail and handrail systems with slopes from 0 to 11 degrees. Its internal socket allows for the precise adjustment and secure fixing of uprights using hex bolts.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
Customizable
HULK Metal supplies base flange structural pipe fittings made of durable materials with multiple surface finishes. They are designed for stronger pipe connections and longer service life. Our modern factory, professional team, and strict inspection ensure higher-standard products for your projects.
HULK Metal manufactures high-standard railing base flange structural pipe fittings with ISO 9001 certification. Our fittings feature precise dimensions, reliable strength, and multiple surface treatments, ensuring durability and excellent performance in both indoor and outdoor applications for handrail and guardrail systems.
The Short Swivel Tee Structural Pipe Fitting is widely used in handrail and guardrail systems where angled connections are required. Manufactured by HULK Metal with strict ISO 9001 standards, it offers strength, flexibility, and long service life.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
33.7/26.9
Customizable
The Swivel Base Flange is engineered to secure pipes to walls with adjustable angles from 0° to 180°. Its modular design ensures easy assembly, reliable stability, and compatibility with multiple pipe sizes and materials.
The Corner Swivel Combination structural pipe fitting is designed to connect pipes set at right angles across perpendicular planes.
The Add on Crossover, also known as Split Crossover, is designed for adding a perpendicular pipe to an already installed system. Its split-sleeve structure makes installation easy without dismantling existing pipes.
The 90 Degree Two Way Elbow structural pipe fitting is designed for connecting two pipe ends at a right angle. It is commonly applied in handrail, guardrail, and fence systems, ensuring strong and stable joints.
Our Four Socket Cross Structural Pipe Fitting comes in various sizes and surface treatments to suit different projects. Made from malleable iron or ductile iron and customizable on request, these fittings are durable and corrosion-resistant.
Clamp on Crossover Structural Pipe Fittings are designed to create perpendicular connections between pipes without requiring dismantling of existing structures. They feature a strong clamping design that ensures tight, gap-free joints.
The Offset Crossover Structural Pipe Fitting is designed to connect two pipes securely in an offset crossing structure. It allows builders to easily create strong and stable frameworks while maintaining flexibility for different structural needs.
The 90 Degree Two Socket Tee offers two perpendicular sockets for secure pipe connections. It is engineered to provide precise alignment and exceptional strength in guardrails, handrails, fencing, and DIY structures.
Three Socket Cross Structural Pipe Fittings connect vertical uprights with three perpendicular horizontal pipes, offering robust support for fencing, storage racks, and DIY systems. Their versatile design allows easy installation and configuration, ensuring durability and stability in multiple applications.
HULK Metal's Clamp on Tee Structural Pipe Fittings are engineered for secure, easy installation on existing systems. Made from high-quality malleable or ductile iron, they support durable, stable connections for guardrails, handrails, and DIY structures.
Two Socket Cross Structural Pipe Fittings are designed to connect upright pipes with two perpendicular pipes in the same plane. Manufactured from high-quality cast iron, stainless steel, or aluminum, these fittings undergo strict inspection and advanced surface treatment
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
Customizable
HULK Metal manufactures high-quality Three Socket Tee (Long Tee) Structural Pipe Fittings that combine strength, precision, and reliability. Made from malleable or ductile iron with customizable finishes such as galvanizing or powder coating, these fittings are ideal for both industrial and DIY applications.
The side outlet elbow, also called a 3-way elbow, is designed to connect three pipes at 90° angles. It provides strength and stability in guardrails, handrails, and cube-like structures.
HULK Metal's Variable Swivel Elbow is engineered for versatile pipe-joining applications. With angles ranging from 73° to 287°, it provides maximum flexibility for complex structures.
HULK Metal's Reducing Short Tee Structural Pipe Fitting is engineered to provide a secure vertical pipe connection with different diameters, ideal for mid-rails or guardrail top rails.
The Single Socket Tee Structural Pipe Fitting, also known as Short Tee, is widely used in railing systems, guardrails, and DIY structures. It allows one pipe to connect securely at a right angle to another, forming a stable "T" connection.
The Single Lugged Bracket Structural Pipe Fitting is a reliable solution for fixing pipes onto walls or panels where limited space prevents double lug use.
The Vertical Railing Side Support Structural Pipe Fitting is designed to provide strong and stable support for railing systems. Manufactured with malleable iron or ductile iron, and available in multiple surface treatments such as hot-dip galvanizing or powder coating, these fittings ensure long-term durability.
The Cradle Clamp Structural Pipe Fitting is designed to fasten pipe rails securely to uprights. Its open clamp structure allows quick installation, while inner hex bolts ensure reliable stability.
Horizontal Railing Side Support Structural Pipe Fittings are designed to fasten railing uprights firmly against walls or side structures.
The Adjustable Short Tee is engineered to connect pipes at variable angles from 30 deg to 60 deg. Its durable structure, simple installation, and flexible design make it suitable for guardrail and handrail systems.
The Single Swivel Combination is formed by joining two swivel fittings, making it ideal for environments requiring flexible angle adjustments. While it cannot independently bear lateral loads, it becomes effective when used together with other fittings.
The Add on Short Tee Structural Pipe Fitting is a hinged socket fitting that allows vertical connections to existing pipe systems without dismantling.
HULK Metal Variable Elbow Structural Pipe Fitting is designed to create secure and adjustable angled connections between pipes. With a strong structure and reliable locking bolts, it delivers stability and precision.
HULK Metal Adjustable Angle Two Socket Cross Structural Pipe Fitting provides a strong and flexible connection between uprights and rails. Designed for rail systems with slopes from 45° to 90°, it is widely used in stairways, handrails, and ramps.
The Galv Ground Socket Structural Pipe Fitting is designed to provide secure support for uprights in diverse ground conditions. Made of high-strength malleable or ductile iron, it ensures long-term stability and durability.
The Side Palm Fixing Structural Pipe Fitting is engineered to provide a solid and secure connection for railing uprights against walls, stairs, or ramps. Its three-lug design with reinforced sockets improves stability and load capacity.
The Double Lugged Bracket Structural Pipe Fitting is engineered to mount pipes flush against flat walls or panels. Featuring two lugs with fixing holes, it supports various screw or chemical fixing methods. Its socket with hex bolts firmly secures the pipe in place.
The Double Male Swivel Structural Pipe Fitting is designed for flexible joint connections and works seamlessly with single swivel female parts to form a stable structure.
Malleable Iron/Ductile Iron/Customizable
Galvanized/Powder-coat/Customizable
TUBE SIZE(mm)
26.9
33.7
42.4
48.3
60.3
Customizable
Hook structural pipe fittings provide temporary mounting points on pipes. Designed for horizontal and vertical installation, they ensure user safety with rounded heads and secure locking via hex bolts. This solution is suitable only for incomplete systems.
The slope railing base flange pipe fitting is designed to secure inclined uprights to the ground with adjustable angles. Manufactured with strict quality control, it offers multiple surface treatments, ensuring strength, corrosion resistance, and suitability for diverse railing and structural applications.
Our gate hinge pipe fittings combine robust materials with precision casting to create dependable connections for gates. With multiple surface treatments and sizes available, they meet diverse installation requirements, deliver excellent corrosion resistance, and provide a secure, smooth rotational function.
Gate Eye Pipe Fittings provide a reliable hinge connection for gates and handrail systems. Made from strong cast iron or flexible ductile iron, they come with different surface finishes, providing great performance, a longer lifespan, and making them suitable for many construction and industrial uses.
No. 101 galvanized pipe handrail fittings are used to connect two pipes into a "T" shape. It is also called a Pipe Clamp Short Tee. One pipe is inserted into the socket, and the other one passes through the channel above.
101 Reducing Short Tee Galvanized Pipe Railing Fittings are often used. HULK Metal is a well-known supplier in China. We look forward to your inquiry.
104 galvanized slip-on pipe fittings long tee can be used to add two horizontal pipes to the guardrail or handrail uprights, or to connect two pipes in a DIY structure and add a vertical pipe to them.
104 galvanized slip-on pipe fittings long tee can be used to add two horizontal pipes to the guardrail or handrail uprights, or to connect two pipes in a DIY structure and add a vertical pipe to them.
116A Galvanized Pipe Guardrail Fittings Add On Side-outlet Tee is used to add two perpendicular rails to an already assembled handrail or guardrail uprights, or to add two perpendicular pipes to an assembled DIY structure such as a cube or cuboid.
119 Galvanized Safety Railing Fittings Two Socket Cross is used to add two pipes on the same plane to form a cross structure for a specific position of a pipe.
We integrated a complete supply chain, passed ISO 9001 certification, formed a professional technical team and produced a full range models of the galvanized pipe connector fittings to provide the best services and products. Looking forward your inquiry.
The 119A Galvanized Railing Connectors Add-on Two Socket Cross is different from the 119 type in that it can add two pipes to an already completed system.
123 Galvanized Railing Fittings 40 to 70 Elbow is very easy to use and can be used in any scenario where two pipes need to be connected at an angle of 40 degree to 70 degree. We have a complete supply chain and provide QA services.
124 type Galvanized Key Clamp Fitting uses 3 types of hot-dip galvanizing, double coating, and powder coating. We can provide 33.7mm, 42.4mm and 48.3mm diameters. We integrate a complete supply chain and a professional team to provide better products and services. Looking forward to your inquiry.
We can provide 21.3 mm to 60.3 mm size, that is, 1/2" to 2". We have a full range of molds, can complete each order faster.
Safety rail fittings are slip-on pipe fittings for safety railings. They can be quickly installed to complete a system, are easy to operate, and have a longer life and better performance. The 125R reducing 90-degree elbow is a special and uncommon fitting used to connect two pipes of different thicknesses.
As a top metalworking service provider, we want to let every customer experience a sense of security in purchasing, sales, etc., and better realize their value through continuously defining new standards for products and services.
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