Subor offers a comprehensive range of GRP fittings engineered to ensure full integration with our GRP pipe systems — delivering unmatched reliability, hydraulic performance, and structural continuity across the entire pipeline network.
Manufactured with the same advanced technology and quality standards as our pipes, Subor GRP fittings are designed to withstand the same pressure, environmental, and operational conditions — providing consistency across all components of a project.
Our standard fitting portfolio includes:
Elbow
Concentric Tee
Tangential Tee
Concentric Reducer
Eccentric Reducer
Flange
Blind Flange
Puddle Flange
Wall Coupling
Wye
Marine Lug
Spools
Whether the need is for precise direction changes, transitions, or branch connections, Subor’s GRP fittings are tailored to meet the technical demands of your system. In addition to our standard offering, we provide custom-engineered fittings to suit unique geometries and installation constraints.
With Subor, clients receive not only high-performance GRP pipes, but a fully integrated system — ensuring durability, ease of installation, and long-term operational efficiency.
Our standard fitting portfolio includes:
Elbow
Concentric Tee
Tangential Tee
Concentric Reducer
Eccentric Reducer
Flange
Blind Flange
Puddle Flange
Wall Coupling
Wye
Marine Lug
Spools
Whether the need is for precise direction changes, transitions, or branch connections, Subor’s GRP fittings are tailored to meet the technical demands of your system. In addition to our standard offering, we provide custom-engineered fittings to suit unique geometries and installation constraints.
With Subor, clients receive not only high-performance GRP pipes, but a fully integrated system — ensuring durability, ease of installation, and long-term operational efficiency.
Elbows



Subor’s GRP Elbows are precision-engineered fittings used to change the direction of the pipeline while maintaining optimal flow performance and structural continuity.
Designed to integrate seamlessly with our GRP pipe systems, elbows are available in a full range of angles to suit various layout requirements and site constraints.
We offer elbows with angles from 0° to 90°, produced using a mitered construction method that ensures durability, hydraulic efficiency, and ease of installation:
0°–30° Manufactured with one miter cut
31°–60° Constructed with two miter cuts
61°–90° Built with three miter cuts
This tiered approach allows for customized angular transitions while preserving the mechanical strength and internal flow characteristics of the system. Subor elbows are available across a wide diameter range and can be tailored to meet specific pressure and stiffness requirements.
Whether for water transmission, industrial networks, or wastewater systems, Subor’s elbows deliver precise directional control with the same high performance and long service life as our GRP pipes.
Designed to integrate seamlessly with our GRP pipe systems, elbows are available in a full range of angles to suit various layout requirements and site constraints.
We offer elbows with angles from 0° to 90°, produced using a mitered construction method that ensures durability, hydraulic efficiency, and ease of installation:
0°–30° Manufactured with one miter cut
31°–60° Constructed with two miter cuts
61°–90° Built with three miter cuts
This tiered approach allows for customized angular transitions while preserving the mechanical strength and internal flow characteristics of the system. Subor elbows are available across a wide diameter range and can be tailored to meet specific pressure and stiffness requirements.
Whether for water transmission, industrial networks, or wastewater systems, Subor’s elbows deliver precise directional control with the same high performance and long service life as our GRP pipes.
Concentric Tee

Subor’s Concentric and Tangential Tees are essential fittings designed for branching pipeline systems or connecting electromechanical equipment such as pumps, flow meters, and valves.
Concentric Tees allow for a centrally aligned outlet, ideal for equal-flow division or equipment integration in symmetrical layouts.
Tangential Tees provide an offset outlet, enabling more controlled hydraulic transitions, often preferred in systems where flow direction or turbulence must be minimized.
Both types of tees can be produced with flanged ends to facilitate direct connection to electromechanical components, allowing for easy installation, maintenance, and equipment replacement.
Engineered with precision and fabricated to match the mechanical properties of the GRP pipeline system, Subor tees ensure structural continuity, leak-free performance, and customizable geometry to suit project-specific layouts.
Whether used to divide flow, connect instruments, or integrate with plant systems, Subor’s tee fittings offer the reliability and adaptability needed for high-performance infrastructure.
Concentric Tees allow for a centrally aligned outlet, ideal for equal-flow division or equipment integration in symmetrical layouts.
Tangential Tees provide an offset outlet, enabling more controlled hydraulic transitions, often preferred in systems where flow direction or turbulence must be minimized.
Both types of tees can be produced with flanged ends to facilitate direct connection to electromechanical components, allowing for easy installation, maintenance, and equipment replacement.
Engineered with precision and fabricated to match the mechanical properties of the GRP pipeline system, Subor tees ensure structural continuity, leak-free performance, and customizable geometry to suit project-specific layouts.
Whether used to divide flow, connect instruments, or integrate with plant systems, Subor’s tee fittings offer the reliability and adaptability needed for high-performance infrastructure.
Tangential Tee


Subor’s Concentric and Tangential Tees are essential fittings designed for branching pipeline systems or connecting electromechanical equipment such as pumps, flow meters, and valves.
Concentric Tees allow for a centrally aligned outlet, ideal for equal-flow division or equipment integration in symmetrical layouts.
Tangential Tees provide an offset outlet, enabling more controlled hydraulic transitions, often preferred in systems where flow direction or turbulence must be minimized.
Both types of tees can be produced with flanged ends to facilitate direct connection to electromechanical components, allowing for easy installation, maintenance, and equipment replacement.
Engineered with precision and fabricated to match the mechanical properties of the GRP pipeline system, Subor tees ensure structural continuity, leak-free performance, and customizable geometry to suit project-specific layouts.
Whether used to divide flow, connect instruments, or integrate with plant systems, Subor’s tee fittings offer the reliability and adaptability needed for high-performance infrastructure.
Concentric Tees allow for a centrally aligned outlet, ideal for equal-flow division or equipment integration in symmetrical layouts.
Tangential Tees provide an offset outlet, enabling more controlled hydraulic transitions, often preferred in systems where flow direction or turbulence must be minimized.
Both types of tees can be produced with flanged ends to facilitate direct connection to electromechanical components, allowing for easy installation, maintenance, and equipment replacement.
Engineered with precision and fabricated to match the mechanical properties of the GRP pipeline system, Subor tees ensure structural continuity, leak-free performance, and customizable geometry to suit project-specific layouts.
Whether used to divide flow, connect instruments, or integrate with plant systems, Subor’s tee fittings offer the reliability and adaptability needed for high-performance infrastructure.
Concentric Reducer

Subor’s Concentric and Eccentric Reducers are used to transition between different pipe diameters within a GRP pipeline system — whether to manage flow velocity, pressure dynamics, or to integrate with downstream components.
Concentric Reducers offer a symmetrical transition, maintaining a consistent centerline, ideal for vertical installations or flow paths where alignment must be preserved.
Eccentric Reducers provide an offset transition, preventing air entrapment and ensuring smooth flow in horizontal layouts, especially in gravity or partially full systems.
To facilitate integration with different piping systems, Subor can manufacture reducers with flanged ends, enabling direct, secure connections to HDPE, Steel, Ductile Iron, or other pipe materials — ensuring compatibility across multi-material networks.
Produced with precision and matched to the hydraulic and mechanical requirements of the system, Subor reducers offer leak-tight performance, structural integrity, and customization to project-specific configurations.
Concentric Reducers offer a symmetrical transition, maintaining a consistent centerline, ideal for vertical installations or flow paths where alignment must be preserved.
Eccentric Reducers provide an offset transition, preventing air entrapment and ensuring smooth flow in horizontal layouts, especially in gravity or partially full systems.
To facilitate integration with different piping systems, Subor can manufacture reducers with flanged ends, enabling direct, secure connections to HDPE, Steel, Ductile Iron, or other pipe materials — ensuring compatibility across multi-material networks.
Produced with precision and matched to the hydraulic and mechanical requirements of the system, Subor reducers offer leak-tight performance, structural integrity, and customization to project-specific configurations.
Flange

Subor’s GRP Flanges are designed to provide reliable, watertight connections between pipeline sections or to integrate GRP pipelines with other piping systems and electromechanical components.
Manufactured according to project-specific requirements, our flanges can be drilled in accordance with international standards, including EN and other globally recognized norms, ensuring full compatibility with HDPE, steel, ductile iron, and a wide range of system components.
To ensure effective sealing, Subor flanges can be joined using:
O-ring gaskets for secure, recessed sealing
Flat face gaskets for standard flange-to-flange installations
Each flange is engineered for dimensional accuracy, structural strength, and corrosion resistance, delivering dependable performance across pressure and non-pressure applications alike.
Whether used for inspection points, equipment connections, or material transitions, Subor’s flanges offer the precision, flexibility, and international compatibility required in today’s infrastructure projects.
Manufactured according to project-specific requirements, our flanges can be drilled in accordance with international standards, including EN and other globally recognized norms, ensuring full compatibility with HDPE, steel, ductile iron, and a wide range of system components.
To ensure effective sealing, Subor flanges can be joined using:
O-ring gaskets for secure, recessed sealing
Flat face gaskets for standard flange-to-flange installations
Each flange is engineered for dimensional accuracy, structural strength, and corrosion resistance, delivering dependable performance across pressure and non-pressure applications alike.
Whether used for inspection points, equipment connections, or material transitions, Subor’s flanges offer the precision, flexibility, and international compatibility required in today’s infrastructure projects.
Blind Flange

Subor’s Blind Flanges are used to seal off the end of a flanged pipeline, providing a secure and watertight closure point.
They are ideal for line terminations, future extensions, or inspection access points where disassembly may be required later.
Manufactured to the same high standards as our standard flanges, Subor blind flanges are custom-drilled according to international standards and designed to ensure full compatibility and sealing performance when used with O-ring or flat face gaskets.
Robust, corrosion-resistant, and precisely fabricated, our blind flanges ensure long-term reliability and ease of maintenance, even under varying operational conditions.
They are ideal for line terminations, future extensions, or inspection access points where disassembly may be required later.
Manufactured to the same high standards as our standard flanges, Subor blind flanges are custom-drilled according to international standards and designed to ensure full compatibility and sealing performance when used with O-ring or flat face gaskets.
Robust, corrosion-resistant, and precisely fabricated, our blind flanges ensure long-term reliability and ease of maintenance, even under varying operational conditions.
Puddle Flange

Subor’s Puddle Flanges are engineered to provide a watertight, structurally integrated transition where pipelines pass through concrete walls, making them an essential component in underground and water-retaining structures.
Commonly used in basements, shafts, tanks, reservoirs, and pump stations, these fittings are designed to create a strong mechanical bond with the surrounding concrete, ensuring both sealing integrity and structural continuity.
Subor Puddle Flanges are manufactured to resist hydrostatic pressure and environmental exposure, delivering long-term performance and leak protection in the most critical installation zones.
Whether in new construction or retrofit applications, Subor Puddle Flanges offer reliable protection against water ingress — safeguarding infrastructure where it matters most.
Commonly used in basements, shafts, tanks, reservoirs, and pump stations, these fittings are designed to create a strong mechanical bond with the surrounding concrete, ensuring both sealing integrity and structural continuity.
Subor Puddle Flanges are manufactured to resist hydrostatic pressure and environmental exposure, delivering long-term performance and leak protection in the most critical installation zones.
Whether in new construction or retrofit applications, Subor Puddle Flanges offer reliable protection against water ingress — safeguarding infrastructure where it matters most.
Wall Coupling

Subor Wall Couplings are engineered to create secure, watertight, and structurally reliable transitions between GRP pipes and concrete walls. Designed for underground infrastructure, tanks, shafts, and pump stations, each coupling features an aggregate-coated exterior to maximize mechanical bonding with concrete.
With multiple configurations tailored to space constraints, structural requirements, and project-specific conditions, Subor Wall Couplings ensure sealing integrity, installation efficiency, and long-term performance in both standard and complex scenarios.
With multiple configurations tailored to space constraints, structural requirements, and project-specific conditions, Subor Wall Couplings ensure sealing integrity, installation efficiency, and long-term performance in both standard and complex scenarios.
Wye

Subor’s Wye Pieces are specialized fittings used to create angled branch connections from the main pipeline — offering a more gradual transition than standard tees, which helps to minimize turbulence and improve hydraulic flow characteristics.
Designed for systems with a maximum pressure rating of PN 6, Wye fittings are ideal for gravity flow, irrigation, and low-pressure municipal applications.
To enhance cross-system compatibility, Subor can also produce Wye Pieces with PVC outlets, allowing for seamless connection to existing PVC piping networks — a practical solution for system extensions, diversions, or hybrid installations.
Each Wye is custom-fabricated to match the main pipe diameter and branch angle, ensuring a secure, leak-tight fit and long-term structural reliability within the GRP system.
Whether for side connections or gradual diversions, Subor Wye Pieces deliver flexible, integration-ready performance backed by our manufacturing expertise.
Designed for systems with a maximum pressure rating of PN 6, Wye fittings are ideal for gravity flow, irrigation, and low-pressure municipal applications.
To enhance cross-system compatibility, Subor can also produce Wye Pieces with PVC outlets, allowing for seamless connection to existing PVC piping networks — a practical solution for system extensions, diversions, or hybrid installations.
Each Wye is custom-fabricated to match the main pipe diameter and branch angle, ensuring a secure, leak-tight fit and long-term structural reliability within the GRP system.
Whether for side connections or gradual diversions, Subor Wye Pieces deliver flexible, integration-ready performance backed by our manufacturing expertise.
Marine Lug

Subor’s Marine Lugs are specialized attachments designed for underwater pipeline installations, where secure handling, controlled submersion, and stable positioning are critical.
Integrated into the GRP pipe system, Marine Lugs provide anchorage points for lifting equipment, buoyancy control systems, and guide lines — enabling safe and precise placement during marine or subaqueous installations.
These fittings are essential in coastal crossings, submerged intake/outlet lines, reservoirs, and offshore infrastructure, helping ensure that pipes remain aligned and protected during lowering, anchoring, or long-term underwater service.
Manufactured with structural integrity and environmental durability in mind, Subor Marine Lugs support the safe execution of underwater works while maintaining full compatibility with GRP pipe geometry and strength.
Integrated into the GRP pipe system, Marine Lugs provide anchorage points for lifting equipment, buoyancy control systems, and guide lines — enabling safe and precise placement during marine or subaqueous installations.
These fittings are essential in coastal crossings, submerged intake/outlet lines, reservoirs, and offshore infrastructure, helping ensure that pipes remain aligned and protected during lowering, anchoring, or long-term underwater service.
Manufactured with structural integrity and environmental durability in mind, Subor Marine Lugs support the safe execution of underwater works while maintaining full compatibility with GRP pipe geometry and strength.
Spools

You shape it. We make it.
Subor’s GRP Spools represent the ultimate in custom-engineered pipeline solutions — tailor-made assemblies that combine various fittings such as elbows, tees, reducers, flanges, and more into a single, fully integrated unit.
Whether it’s a complex geometry, a space-constrained layout, or a one-of-a-kind connection detail, you define the shape — and Subor makes it happen.
Our experienced engineering department collaborates closely with clients to develop precise, project-specific spool drawings, ensuring full compliance with hydraulic, structural, and spatial requirements. Once approved, our production team manufactures the components to exact specifications using the same high-quality GRP materials and standards applied across all Subor products.
Spools offer not only a high degree of design flexibility, but also faster installation, reduced field labor, and seamless integration into the overall pipeline system.
When off-the-shelf fittings aren't enough, Subor Spools provide the freedom to build exactly what your project demands — with the performance and reliability you expect.
Subor’s GRP Spools represent the ultimate in custom-engineered pipeline solutions — tailor-made assemblies that combine various fittings such as elbows, tees, reducers, flanges, and more into a single, fully integrated unit.
Whether it’s a complex geometry, a space-constrained layout, or a one-of-a-kind connection detail, you define the shape — and Subor makes it happen.
Our experienced engineering department collaborates closely with clients to develop precise, project-specific spool drawings, ensuring full compliance with hydraulic, structural, and spatial requirements. Once approved, our production team manufactures the components to exact specifications using the same high-quality GRP materials and standards applied across all Subor products.
Spools offer not only a high degree of design flexibility, but also faster installation, reduced field labor, and seamless integration into the overall pipeline system.
When off-the-shelf fittings aren't enough, Subor Spools provide the freedom to build exactly what your project demands — with the performance and reliability you expect.
Need a Customised Solution?
For projects requiring special configurations or performance criteria, our team is ready to assist with tailored pipe solutions.
Contact us to reach our sales team and discuss your project needs.
Contact us to reach our sales team and discuss your project needs.