The long-term reliability of a pipeline system is tied to the integrity of its joints. That’s why Subor offer a complete portfolio of high-performance GRP joint solutions, engineered for durability, watertight sealing and ease of installation even in the most demanding environments.
Our joint systems ensure hydraulic integrity, structural continuity and long-term reliability, using high-quality EPDM gaskets supplied by leading manufacturers. For special applications requiring enhanced chemical resistance, NBR gaskets are also available upon request.
To further enhance durability and field performance, Subor incorporate REKA coupling technology which is a proven jointing method offering rapid assembly, excellent flexibility and long-lasting mechanical performance. Additionally, our portfolio includes solutions for both pressure and non-pressure systems, with full compatibility across our GRP product range.
Subor's GRP joint offering includes:
REKA Coupling
Sewer Coupling
Coupling with Integrated Gasket (CIG)
Biaxial Lock Joint
Angled Coupling
GRP Sleeve Coupling
Steel Sleeve Coupling
Innovation in Protection: Blue Tape
Gasket longevity is a critical aspect of joint reliability. Subor’s innovative Blue Tape solution protects EPDM gaskets from UV degradation, dust, and environmental wear during storage and handling, this technology eliminates the need for separate storage space. Just before installation, the tape is easily removed, offering a clean, intact gasket ready for immediate use.
To further enhance durability and field performance, Subor incorporate REKA coupling technology which is a proven jointing method offering rapid assembly, excellent flexibility and long-lasting mechanical performance. Additionally, our portfolio includes solutions for both pressure and non-pressure systems, with full compatibility across our GRP product range.
Subor's GRP joint offering includes:
REKA Coupling
Sewer Coupling
Coupling with Integrated Gasket (CIG)
Biaxial Lock Joint
Angled Coupling
GRP Sleeve Coupling
Steel Sleeve Coupling
Innovation in Protection: Blue Tape
Gasket longevity is a critical aspect of joint reliability. Subor’s innovative Blue Tape solution protects EPDM gaskets from UV degradation, dust, and environmental wear during storage and handling, this technology eliminates the need for separate storage space. Just before installation, the tape is easily removed, offering a clean, intact gasket ready for immediate use.
REKA Coupling
Subor flagship solution for pressure pipelines, REKA Couplings are designed to handle pressures of up to 40 bars.
These couplings offer exceptional leak tightness and a stress-free connection, compensating for pipe end tolerances and angular misalignments. Ideal for high-pressure, high-integrity applications, REKA Couplings ensure system reliability without compromising flexibility.
These couplings offer exceptional leak tightness and a stress-free connection, compensating for pipe end tolerances and angular misalignments. Ideal for high-pressure, high-integrity applications, REKA Couplings ensure system reliability without compromising flexibility.
Sewer Coupling
Specifically developed for non-pressure and gravity flow applications, Subor Sewer Couplings are highly resistant to corrosive environments and chemical exposure, making them ideal for wastewater networks and industrial drainage systems.
Their robust sealing performance ensures long-lasting protection even in the most aggressive conditions.
Their robust sealing performance ensures long-lasting protection even in the most aggressive conditions.
Coupling with Integrated Gasket (CIG)
Coupling with Integrated Gasket (CIG) feature a fully EPDM-lined inner surface, offering full contact and sealing across the pipe circumference.
This design eliminates common jobsite errors such as gasket twisting or dislodgement for fast, secure installations and a high operational reliability, even in challenging field conditions.
This design eliminates common jobsite errors such as gasket twisting or dislodgement for fast, secure installations and a high operational reliability, even in challenging field conditions.
Biaxial Lock Joint
Subor Biaxial Lock Joints are designed to deliver a rigid, secure connection for demanding pipeline systems where axial movement must be restrained.
Engineered with high-performance polyamide locking rods, this coupling solution ensures the joint is mechanically locked in place, offering stability and integrity under operational pressure.
A key advantage of the biaxial system is that it eliminates the need for external thrust blocks, making it ideal for confined or complex installations where conventional restraint methods are impractical.
With a diameter range of DN 200 to DN 2400 and pressure resistance up to 16 bars, Biaxial Lock Joints are widely used in industrial cooling systems, desalination plants and other pipeline networks where reliable, restrained joints are critical.
Subor biaxial system combines mechanical strength, ease of installation and long-term durability offering a trusted solution for engineers and contractors seeking enhanced joint security.
Engineered with high-performance polyamide locking rods, this coupling solution ensures the joint is mechanically locked in place, offering stability and integrity under operational pressure.
A key advantage of the biaxial system is that it eliminates the need for external thrust blocks, making it ideal for confined or complex installations where conventional restraint methods are impractical.
With a diameter range of DN 200 to DN 2400 and pressure resistance up to 16 bars, Biaxial Lock Joints are widely used in industrial cooling systems, desalination plants and other pipeline networks where reliable, restrained joints are critical.
Subor biaxial system combines mechanical strength, ease of installation and long-term durability offering a trusted solution for engineers and contractors seeking enhanced joint security.
Angled Coupling
Subor Angled Couplings are engineered to allow angular deflections of up to 3 degrees, offering a flexible yet secure jointing solution for GRP pipelines. This built-in flexibility allows for alignment adjustments during installation, minimizing the need for precise pipe placement and reducing the use of additional fittings such as elbows.
Designed to simplify complex routing scenarios, Angled Couplings are particularly effective in projects with layout constraints or minor directional changes. Their ability to absorb angular shifts also enhances system resilience against soil movement and settling over time.
With a diameter range of DN 600 to DN 4000 and pressure ratings of up to PN 16 bars, Subor Angled Couplings provide a versatile and efficient solution for both large-diameter and high-performance pipeline systems.
Whether used in water transmission, hydropower penstocks and industrial systems, these couplings help deliver faster, more adaptable installations without compromising sealing integrity or long-term performance.
Designed to simplify complex routing scenarios, Angled Couplings are particularly effective in projects with layout constraints or minor directional changes. Their ability to absorb angular shifts also enhances system resilience against soil movement and settling over time.
With a diameter range of DN 600 to DN 4000 and pressure ratings of up to PN 16 bars, Subor Angled Couplings provide a versatile and efficient solution for both large-diameter and high-performance pipeline systems.
Whether used in water transmission, hydropower penstocks and industrial systems, these couplings help deliver faster, more adaptable installations without compromising sealing integrity or long-term performance.
GRP Sleeve Coupling
Subor Sleeve Couplings are designed for trenchless pipeline installations such as pipe jacking and sliplining, where pipes are pushed into place without excavation. These couplings feature a flush exterior profile that provide seamless passage through the ground with a smooth exterior that prevents friction, resistance or structural damage during insertion.
To achieve this, pipes used in jacking applications are manufactured without external coupling margins, resulting in a uniform transition between pipe segments.
GRP Sleeve Couplings are corrosion-resistant and fully compatible with GRP pipe systems, offering a lightweight solution.
To achieve this, pipes used in jacking applications are manufactured without external coupling margins, resulting in a uniform transition between pipe segments.
GRP Sleeve Couplings are corrosion-resistant and fully compatible with GRP pipe systems, offering a lightweight solution.
Steel Sleeve Coupling
Subor partners with renowned suppliers to provide a range of steel couplings, suitable for both pressure and non-pressure applications.
Steel Couplings are available in AISI 304 and AISI 316 stainless steel grades, supplied in collaboration with trusted steel manufacturers to ensure mechanical strength, corrosion resistance and long-term performance.
Available in multiple configurations and materials, including stainless steel grades, these solutions provide reliable sealing and mechanical integrity.
Steel Couplings are available in AISI 304 and AISI 316 stainless steel grades, supplied in collaboration with trusted steel manufacturers to ensure mechanical strength, corrosion resistance and long-term performance.
Available in multiple configurations and materials, including stainless steel grades, these solutions provide reliable sealing and mechanical integrity.
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.
