EN
RUWe have a thickness gauge to complete the coating thickness test. The Safety Rail Fittings we provide are all above the standard thickness.
ISO 9001 Certified
Easier to Use
Galvanized
Suitable for Safety Rails
125R reducing 90 degree elbow is a special type of slip on pipe fittings. It is needed to connect when the uprights and horizontal handrail pipes are of different thicknesses. Of course, it can also be used in some other DIY structures.
We currently only have CD reducing 90 degree elbow. If you have special requirements and the quantity is large, we also support OEM service.
| 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 | |||||||||||
 |  | ||||||||||
| Name | 125R Galvanized Safety Rail Fittings 90 Degree Elbow | ||||||||||
| 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 |
| XY | In the Picture, X pipe is the front size, Ypipe is the back Size, | ||||||||||
| DC | 40/32 | 3/2"/5/4" | 48.3/42.4 | HM-G-125R-DC | HM-D-125R-DC | HM-PC-125R-DC | HM-B-125R-DC | 68 | 60 | ||
We are an experienced safety rail fittings supplier in China. We have integrated a complete supply chain and formed a professional team to provide more thoughtful services to help you complete your purchase tasks in China more quickly. Here are some of the advantages, disadvantages and applications of this product that we have summarized.
It is a pipe fitting designed for the construction of safety railing systems. There are many types of pipe fittings that can be used in this system, among which slip on pipe fitting is the most widely used. This is because it is easier to install and has stronger protective performance.
125R reducing 90 degree elbow is used in safety rail fittings to connect uprights and handrails and the two must be two pipes of different thicknesses.
It has two sockets of different diameters, each with an Allen Bolts to fasten the inserted pipe.
Its material is cast iron, which can be further divided into ductile iron and malleable cast iron.The performance of ductile iron is better than that of malleable cast iron in all aspects, especially in impact resistance. Therefore, we recommend you to choose ductile iron safety rail fittings.
We can provide three surface treatments: hot dip galvanizing, powder coating, and double galvanizing (hot dip galvanizing first and then electro galvanizing). We do not provide safety rail fittings that are only electro galvanized. Because the surface of sand cast fittings is rough and porous, the surface quality of electro galvanizing will be very low and reduce its service life. The surface of double galvanizing is bright and very attractive.
Step 1: Check the thickness of the two pipes to make sure they are suitable for the fitting.
Step 2: Loosen the Allen bolts on the socket until the pipe can be easily inserted (if the Allen bolts are not on the fitting, you can ignore this step).
Step 3: Gently bend the two tubes and insert them into the sockets of 125R reducing 90 degree elbow.
Step 4: Use the Allen key to tighten the Allen bolts.
Step 5: Check the stability of the system. Reinforce the Allen bolts of the entire system.
When purchasing, we must pay attention to the fact that the inner diameter of the socket corresponds to the outer diameter of the pipe, and the units are inches and mm.
The fittings in inches or mm described by the supplier often refer to the inner diameter of the socket.
Confirm whether the pipe sizes of the 125R reducing elbow can match the uprights and horizontal rails in your system to ensure a stable connection.
Check whether the surface treatment, such as hot-dip galvanizing or powder coating, can meet the environmental requirements of your project.
Ensure the supplier has complete molds for the required fittings and strong production capacity. A well-equipped factory with both standard and customized mold-making capabilities will shorten delivery time, reduce costs, and guarantee better consistency in product quality.
Check if the supplier operates under ISO 9001 or equivalent certifications. A reliable supplier should have a professional inspection team and testing equipment to perform impact, salt spray, and dimensional accuracy tests to ensure the fittings meet safety standards.
A good supplier should offer multiple finishing methods such as hot-dip galvanizing, double galvanizing, and powder coating. More options allow you to select surface treatments suitable for different environments, ensuring longer service life and better performance.
Evaluate whether the supplier has integrated foundry, surface treatment, and quality control facilities. A complete supply chain not only ensures stable product quality but also helps in faster response, reduced lead time, and easier coordination for large orders.
Choose a supplier that provides timely after-sales service and technical support. A professional team can help solve installation issues, offer customization advice, and ensure smooth communication, making the procurement process more efficient and reliable.
A: We operate a fully equipped quality inspection center with advanced instruments. Every batch undergoes dimensional, impact, and salt spray tests under ISO 9001 standards, ensuring reliable performance and compliance with international safety requirements before shipment.
A: Prices vary depending on raw material, size, surface treatment, and order quantity. As a factory supplier, we provide accurate real-time quotations and competitive pricing while ensuring consistent quality and long-term supply capacity.
A: All our prices are based on guaranteed quality. Larger orders benefit from economies of scale, allowing lower unit costs. By consolidating your purchase and confirming specifications in advance, you can achieve the most cost-effective deal.
A: The MOQ depends on product size and surface finish. Standard specifications usually have lower requirements, while customized options may require higher quantities. Contact us directly to confirm the most suitable MOQ for your project.
A: Standard orders are typically delivered within 30 days. For larger volumes or special requirements, the lead time may extend but rarely exceeds 45 days. We streamline production to ensure fast, reliable, and consistent delivery.
A: We provide hot-dip galvanizing, double galvanizing, and powder coating finishes. Customized powder coating colors are available with a minimum order requirement. Each finish is tested to meet durability standards and tailored for different environments.
A: We have long-term clients in over 50 countries across Europe, North America, South America, Africa, and Southeast Asia. Our export experience allows us to provide reliable logistics support and timely delivery worldwide.
A: We can manufacture with cast iron, stainless steel, and aluminum. Currently, full molds are available for cast iron fittings. Stainless steel and aluminum require mold development and are supported under OEM customization services.
A: We supply sizes from DN15 to DN50 with existing molds for common specifications. For special requirements, we can design and produce customized fittings to ensure perfect compatibility and dependable performance in your projects.
A: We accept T/T, L/C, and other flexible payment methods. Delivery terms such as FOB, CIF, and EXW are supported. We recommend the most suitable trade method based on your order size and destination.
For standard products, we have already built a complete set of molds, which can complete the order and deliver it faster. If a custom size is required, we need to create the corresponding mold.
We will first select the appropriate process (mechanical or manual molding) according to the type and quantity of fittings required by the order. Choosing the right process helps reduce the cost of the order.
Use the pattern to complete the sand mold manufacturing, fill the sand core and close the mold.
The smelting process of malleable cast iron is very complicated, while that of ductile iron is much simpler.
Liquid cast iron needs to be cast at a specific temperature. When pouring, it is necessary to pay attention to the surface oxide scale not pouring into the gate.
Cut the Reducing 90 Degree Elbow from the casting tree. Grind the cut part and then put it into the shot blasting machine for shot blasting.
Hot-dip galvanizing. Double galvanizing involves electro-galvanizing after hot-dip galvanizing.
We have an advanced quality control center that can complete the testing of material internal structure, toughness, impact resistance, shear resistance, hardness, etc. You can make a request and we will complete it and issue a detailed test report.
We have a thickness gauge to complete the coating thickness test. The Safety Rail Fittings we provide are all above the standard thickness.
We have advanced measuring tools to ensure that the inner diameter of the fittings meets the drawing requirements.
Our factory has the mold for CD Reducing 90 Degree Elbow, which can deliver orders of this size faster. For other fittings, we have a full set of molds. Here we will show you our foundry, surface treatment factory and quality inspection center. You can click to enter the details page to learn more, or you can contact us at any time to come to China for a field visit.
HULK Metal has integrated a complete supply chain and formed a professional team to provide better quality safety rail fittings and services. Choosing us, you will enjoy the following benefits.
We have compiled some content about Safety Rail Fittings to help you better understand them. For example, what are slip on pipe fittings, their material comparison, how to use them to DIY some furniture, etc.
HULK Metal offers a wide range of galvanized safety rail fittings to meet diverse project needs. In addition to the 125R reducing 90 degree elbow, we also supply short tees, side outlet tees, two socket crosses, straight connectors, and flanges. All fittings are manufactured with ductile iron or malleable iron, treated with durable surface finishes, and certified under ISO 9001. These components are widely applied in safety rail systems, guardrails, and custom pipe structures worldwide.
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.
Room 901, Intelligent Park A Building, No. 86 ChunYang Rd, Qingdao, China 266109
© 2025 HULK Metal All Rights Reserved. All Rights Reserved.
