16mm, 20mm, 25mm, 32mm, 40mm rebar coupler Manufacturer & Supplier

16mm, 20mm, 25mm, 32mm, 40mm rebar coupler Manufacturer & Supplier Specification

Operating System
manual, threaded

Feature
strong, Durable, reliable

Material
EN8D

Length
12 Millimeter (mm)

Height
12 Millimeter (mm)

Diameter
11*5*11 Millimeter (mm)

Weight
890 Grams (g)

Surface Treatment
heat Threatment

Usage
constraction,TMT joint,Bridge

Color
Black

Application
constraction,TMT joint,Bridge

16mm, 20mm, 25mm, 32mm, 40mm rebar coupler Manufacturer & Supplier Trade Information

Minimum Order Quantity
10 Pieces

Delivery Time
24 Hours

About 16mm, 20mm, 25mm, 32mm, 40mm rebar coupler Manufacturer & Supplier

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.