Rebar coupler

Rebar coupler Trade Information

Minimum Order Quantity
10 Pieces

Delivery Time
24 Hours

Rebar coupler About

What is a 16mm to 40mm Rebar Coupler Manufacturer & Supplier?

A Rebar Coupler Manufacturer & Supplier is an engineering firm that processes high-grade steel alloy bars (typically EN8D, Carbon Steel, or forged Mild Steel) into threaded or bolted mechanical sleeves. These sleeves seamlessly join reinforcing TMT steel bars together.

As an established manufacturer, Surya Engineering produces standard internal diameters matching India's primary structural rebar sizes: 16mm, 20mm, 25mm, 32mm, and 40mm.

Approximate Price Breakdown in India (2026 Estimates)

Prices vary based on production technology (Parallel Threaded, Cold Forged, or MBT Bolted) and the grade of steel used. Wholesale factory rates from top Mumbai manufacturers are generally structured as follows:

Rebar Size (Diameter)	Parallel Threaded Coupler (per pc)	Cold Forged Roll Threaded (per pc)	MBT Bolted Coupler (per pc)
16 mm	17 22	22 28	85 110
20 mm	22 28	26 34	95 130
25 mm	35 45	42 52	140 180
32 mm	65 78	75 90	210 260
40 mm	110 135	130 160	350 420+

Classification & Specific Structural Applications

16mm & 20mm Couplers: Mostly applied in standard residential slabs, beams, and residential building columns. They prevent concrete choke-points in narrow formwork.
25mm & 32mm Couplers: Used heavily in industrial basements, commercial high-rise shear walls, metro rail pillars, and flyover piers where structural loads are extreme.
40mm Couplers: Deployed in mega-infrastructure installations like dam spillways, nuclear power plants, and foundational raft concrete mats where massive tension and compression forces must be transferred smoothly.

Step-by-Step Mechanical Splicing Installation Process

1.Square Edge Cutting:Preparation.

Cut the ends of the 16mm40mm TMT bars using a forged cold-cutting saw. The faces must be perfectly flat and perpendicular to ensure proper end-bearing contact.

2.Upset Forging (For Forged Type Only):Enlargement.

Insert the cut rebar end into a hydraulic cold-forging press machine. This expands the bar end diameter slightly, ensuring that when threads are later carved out, the net core diameter doesn't drop below the main bar thickness.

3.Roll Threading:Machining.

Run the bar through an automatic rebar roll-threading machine. This cuts clean, precise metric threads matching the precise internal pitch profile of the Surya Engineering coupler sleeve.

4.Torque Assembly:Final Fastening.

Screw the coupler onto the first bar by hand, then introduce the continuation bar. Use a calibrated mechanical torque wrench to tighten the connection to the strict Newton-meter (Nm) rating specified for that bar diameter to prevent thread slippage.

IS Testing Standards (IS 16172:2023)

To clear government and third-party site audits across India, couplers must strictly satisfy IS 16172:2023 regulations:

Classification: Systems are divided into Class H (engineered for high-seismic zones, passing both low-cycle and high-cycle fatigue tests) and Class L (standard low-cycle fatigue testing).
Static Tensile Test (Bar Break Technology): The completed splice must withstand at least 125% of the nominal yield strength ( $f_y$ ) of the rebar bar. Under destructive testing, the failure/breakage must occur in the TMT bar body itself, not inside the coupler connection.
Slip Test: The total permanent slip across the joint under physical tension must not exceed 0.1 mm when measured at 60% of the bar's yield strength ( $f_y$ ).

Advantages

Eliminates lap splicing
Saves steel consumption
Faster installation
High tensile strength
Better structural safety
Excellent load transfer
Reduces reinforcement congestion
Improves concrete quality
Earthquake-resistant connection
Long service life
Low maintenance
Cost-effective solution

Why Choose Surya Engineering?

Surya Engineering is a leading Rebar Coupler Manufacturer in Mumbai, Maharashtra, supplying high-quality couplers across Delhi, Gujarat, Rajasthan, Maharashtra, Karnataka, Telangana, Tamil Nadu, Kerala, Uttar Pradesh, Madhya Pradesh, Punjab, Haryana, West Bengal, Odisha, Bihar, Jharkhand, Assam, and all major cities in India. We offer precision manufacturing, premium-grade steel, competitive pricing, bulk supply, timely delivery, and reliable customer support.

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Premium Quality Construction

Crafted using EN8D steel and enhanced with heat treatment, our rebar couplers ensure exceptional strength and durability for demanding construction environments. The precisely threaded manual operation guarantees a reliable fit, making these couplers ideal for seamlessly joining TMT bars and reinforcing bridges or structural frameworks.

Versatile Application Range

Available in multiple sizes from 16mm to 40mm, our couplers are suitable for a range of construction tasks including bridges and general reinforcement. Their compatibility with standard TMT bars and consistent performance make them a preferred choice for professionals seeking efficiency and safety in their projects.

FAQ's of 16mm, 20mm, 25mm, 32mm, 40mm rebar coupler Manufacturer & Supplier:

Q: How are your rebar couplers installed in construction projects?

A: Our rebar couplers are manually threaded, allowing for straightforward on-site installation. Simply align the rebar sections, thread the coupler onto the ends, and tighten to achieve a secure connection. This benefits both rapid and reliable assembly in TMT joints and bridge reinforcement tasks.

Q: What materials are used in the manufacturing of these couplers?

A: These couplers are made from EN8D steel, known for its superior mechanical properties and durability. The surface is treated with heat treatment and finished in black to further enhance strength and longevity in construction applications.

Q: When should I use a rebar coupler instead of overlapping rebar?

A: Rebar couplers are recommended when overlapping is impractical or space-saving is vital. They provide a strong, reliable joint without increasing the structural weight or requiring excessive slab thickness, making them ideal for confined spaces and critical structural connections such as TMT joints and bridges.

Q: Where can these rebar couplers be utilized most effectively?

A: These couplers are best employed in building projects such as bridges, columns, beams, and any construction requiring reinforced concrete. Their adaptability makes them suitable for both standard and specialized reinforcement applications.

Q: What is the process involved in manufacturing these rebar couplers?

A: The process includes precision forming from EN8D steel followed by a rigorous heat treatment to enhance mechanical properties. Each coupler is threaded and inspected to meet strict quality standards, ensuring strong connectivity and consistent performance.

Q: What are the main benefits of choosing these rebar couplers?

A: Choosing our rebar couplers delivers multiple advantages: exceptional strength, ease of installation, durability, and reliable performance under load. Their compact design and high-quality material provide assurance for long-lasting and secure reinforcement in any structural framework.