Construction Grade Rib Peeling Rolling Thread Rebar Coupler

Rib Peeling Rolling Thread Coupler is a mechanical connecting device used to join steel reinforcing bars (rebar) in concrete construction. It connects two rebars by machining straight threads on the rebar ends and fastening them with a coupler.. Its design and manufacturing processes adhere to a suite of international standards, including IOS15835,ACI318,CARES,DCL certificates.

Size: from 16mm to 40mm

Meet the requirements of steel bars: HRB500/B500B/SD600/ASTM 75

Material: 40CR/S45C

▎Advantages of Thread Rebar Coupler

• High connection strength: The joint strength is equal to or greater than that of the steel bar material, with stable tensile, compressive and seismic performance, far exceeding that of binding and welding.

• Fast construction speed: On-site connection can be completed simply by tightening the connector, without the need for welding or binding, resulting in high efficiency and shorter construction periods.

• Stable and reliable quality: Thread processing is standardized and can be visually inspected, making it less prone to missed or incorrect inspections, and quality is easy to control.

• Wide application range: It can connect steel bars of different diameters and in different directions, and is applicable for horizontal, vertical and inclined connections.

• Steel saving: No lap length is required, significantly reducing the amount of steel used and lowering costs.

• All-Weather Adaptability: No dependence on power supply, welding equipment and special environment, not affected by temperature, humidity, rainy and windy weather, supporting normal construction in various harsh working conditions.

▎Applications & Installation Position

• Vertical components (preferred and most commonly used): Main reinforcement of columns. Vertical reinforcement of shear walls. Reinforcement of stair columns and construction columns. Characteristics: The vertical reinforcement is the easiest to be spliced, with good quality and most favored by workers.

• Key horizontal force-bearing parts: Main reinforcement of beams (top and bottom longitudinal bars). Foundation beams and frame beams. Large-diameter force-bearing bars in slabs

• Key seismic parts: Core area of frame joints. Reinforcement at beam-column joints and transfer floors. High-intensity areas, high-rise and super high-rise buildings

• Large-diameter reinforcement (≥22mm, highly recommended): Reinforcement bars with diameters of 22, 25, 28, 32 and above. Codes and designs usually do not recommend lap splicing for large-diameter reinforcement. Straight thread coupler are the best solution.

• Other key parts: Main reinforcement of foundation slabs and caps. Splicing of main reinforcement in pile foundations. Reinforcement connection in prefabricated components

▎FAQ

Q1: What is rib peeling rolling thread rebar coupler?

A: It is a mechanical rebar splice adopting integrated rib peeling + cold rolling thread process. It strips rebar transverse & longitudinal ribs first, then rolls standard parallel straight threads, achieving equal-strength rigid connection between rebars, replacing traditional welding and lap splicing.

Q2: What advantages does rib peeling process bring vs upset forging coupler?

A: Rib peeling removes surface ribs completely for uniform thread forming, no false threads, stable tensile performance, lower raw material loss, lighter weight, faster on-site threading processing and better interchangeability.

Q3: Can this coupler reach equal-strength connection standard?

A: Yes. All joints achieve tensile strength ≥100% base rebar strength, even up to 125% specified yield strength, fully meet ISO 15835, ACI 318, CARES, JGJ107 seismic construction standards.

Q4: What rebar grades & diameters are compatible?

A: Fits HRB335, HRB400, HRB500 deformed steel bars, covers 12mm–40mm. We supply standard, positive-negative thread, reducing transition couplers for different diameter rebar connection.

Q5: Is the coupler anti-rust and durable for outdoor/humid projects?

A: Made of 45# annealed carbon steel with black oxide anti-rust treatment. Optional epoxy coating for coastal, hydropower and high-humidity environments, anti-corrosion and anti-fatigue for long-term structural load.