KYA 21 Gauge Rebar Tying Wire is a 0.8mm galvanized low-carbon steel wire supplied on an approximately 100m reel for compatible conventional automatic rebar tying machines. Each reel weighs approximately 0.4kg and is designed for repetitive reinforcement tying in precast concrete, foundations, rebar cages, bridges, retaining walls, floors and other reinforced-concrete construction.
The wire is produced from Q195 low-carbon steel with a galvanized surface. This product specification lists nominal 420MPa tensile strength and 21% elongation, with approximately 120–190 ties per reel depending on the tying machine, rebar combination and wire consumption per tying cycle.
The 21GA / 0.8mm format is associated with conventional single-wire automatic rebar tiers. KYA references legacy RB392, RB395, RB397 and RB213-type applications, but reel dimensions and feeding interfaces should be verified before replacing the original consumable.
| Specification | Details |
| Product | Rebar Tying Wire for Automatic Rebar Tier |
| Gauge | 21 Gauge |
| Wire Diameter | 0.8mm / Approx. 0.0315" |
| Wire Length | Approx. 100m per reel |
| Net Weight | Approx. 0.4kg per reel |
| Material | Q195 Low-Carbon Steel |
| Surface | Galvanized |
| Wire Section | Round |
| Nominal Tensile Strength | 420MPa Listed Specification |
| Page-Listed Yield Strength | Nominal 330MPa; confirm against current production documentation |
| Nominal Elongation | 21% Listed Specification |
| Estimated Ties per Reel | Approx. 120–190 Depending on Tool and Rebar Combination |
| Packing | 20 Reels per Box Listed for This SKU |
| Tool Class | Conventional 21GA Single-Wire Automatic Rebar Tiers |
| Legacy Tool References | RB392, RB395, RB397 and RB213-Type Applications, Subject to Reel Verification |
| Typical Applications | Precast Concrete, Foundations, Rebar Cages, Bridges, Roads, Retaining Walls, Floors and Mesh |
For projects requiring controlled mechanical properties, zinc coating thickness or material traceability, request current production documentation for the supplied batch.
A nominal 0.8mm diameter corresponds to the common 21 gauge wire class used by many conventional single-wire automatic rebar tying tools.
Wire diameter alone does not determine compatibility. Automatic rebar tiers also depend on reel outside diameter, spool width, hub dimensions, winding direction and the geometry of the machine's feeding mechanism.
Each KYA reel is listed at approximately 100m of wire with approximately 0.4kg net wire weight. This is a common aftermarket reel format for 0.8mm automatic tying wire.
Original machine consumables may use a different nominal length. For example, some legacy 0.8mm reels are approximately 95m / 312ft. A difference in listed wire length does not by itself determine whether two reels are interchangeable.
KYA specifies Q195 low-carbon steel for this automatic rebar tying wire. Low-carbon steel provides the ductility required for repeated feeding, bending, twisting and cutting during an automatic tying cycle.
Consistent wire diameter, straightness and spool winding are important because automatic tying tools depend on controlled wire feeding through narrow internal guides.
The galvanized surface provides additional corrosion protection compared with untreated carbon-steel tie wire and can be selected where a zinc-coated tying wire is required.
Galvanized wire is not permanently immune to corrosion. Long-term performance depends on zinc coating thickness, storage conditions, moisture, chlorides and the final service environment.
The original product page lists a 4-cycle corrosion test. Ask for the current test report, method and acceptance criteria for the supplied batch when corrosion performance is part of the purchase specification.
This KYA SKU lists nominal tensile strength of 420MPa and nominal elongation of 21%. The combination is intended to provide sufficient strength together with the ductility required for twisting during automatic tying.
These mechanical-property values should be verified against current production documentation when they form part of a project specification or purchase contract.
| Property | KYA Listed Value | Buyer Check |
|---|---|---|
| Wire Diameter | 0.8mm | Confirm machine diameter tolerance. |
| Tensile Strength | 420MPa Nominal | Request current test data when contractually required. |
| Elongation | 21% Nominal | Ductility affects bending and twisting during the tie cycle. |
| Surface | Galvanized | Confirm zinc coating requirement for controlled projects. |
KYA lists approximately 120–190 ties per reel. The actual number of ties depends on the tying machine and the amount of wire consumed around each rebar intersection.
| Factor | Effect on Reel Yield |
|---|---|
| Tool Model | Different automatic tiers consume different wire lengths per tie. |
| Rebar Size | Larger intersections require more wire. |
| Number of Wraps | More wraps reduce the number of ties available from one reel. |
| Tie Geometry | Tool-specific loop and twist geometry affects wire consumption. |
| Tool Condition | Feed and cutter condition can influence wire use and production consistency. |
The 0.8mm wire format belongs to the conventional 21 gauge single-wire automatic tying class. Older and newer generations of rebar tiers can use different spool bodies even when the wire diameter is the same.
| Tool / Wire Reference | Wire Class | Replacement Guidance |
|---|---|---|
| Legacy RB397 / TW897A | 21GA / 0.8mm / Approx. 95m | Compare reel dimensions before replacing with a 100m aftermarket reel. |
| RB398 / TW898 Series | 21GA / 0.8mm Single-Wire System | Confirm complete reel geometry and machine feed interface. |
| RB395-Type Legacy System | 21GA / 0.8mm Class | Provide original consumable part number before ordering replacement reels. |
| RB392 / RB213-Type Systems | Legacy 21GA Applications | Check reel dimensions and feed compatibility with the exact tool. |
| 19GA Twin-Wire Systems | Different Wire and Reel System | Not interchangeable with conventional 21GA single-wire reels. |
| Feature | 21GA 0.8mm Wire | 19GA Twin-Wire |
|---|---|---|
| Wire System | Single Wire | Dual / Twin Wire |
| Typical Diameter | 0.8mm | Approx. 1.0mm Class |
| Common Tool Generation | Conventional Automatic Rebar Tier | Twin-Wire Rebar Tier |
| Reel Design | Single-Wire Spool | Dual-Wire Spool |
| Interchangeable? | No. Wire diameter, feed system and reel geometry are different. | |
Automatic rebar tying wire is used in precast plants to secure reinforcement before concrete placement. Consistent reel winding and wire diameter are important where large numbers of ties are made during each production shift.
The wire positions reinforcing bars during fabrication and handling; the structural capacity of the finished concrete component is provided by the engineered reinforcement system.
Compatible automatic rebar tiers can use 21GA wire when assembling footings, foundations, columns and reinforcement cages.
For repetitive cage fabrication, correct reel fit and consistent feeding are as important as the wire diameter because unplanned feed interruptions can reduce production efficiency.
0.8mm automatic tie wire can be used in bridge decks, road structures, columns, pile caps and other infrastructure reinforcement where the tying tool and wire meet the project requirements.
Infrastructure projects may specify wire material, coating, traceability or domestic-content requirements. Confirm these requirements before supplying tie wire for controlled projects.
Automatic rebar tying machines are also used on reinforcement grids for retaining walls, concrete floors, walls, mesh panels and selected swimming-pool reinforcement.
Where the reinforcement is epoxy-coated or subject to special corrosion requirements, confirm whether galvanized, plastic-coated or stainless-steel tie wire is specified.
Precast concrete beams and panels
Foundations and footings
Rebar cages
Columns and pile caps
Bridge decks
Road construction
Retaining walls
Concrete floors
Wall reinforcement
Reinforcement mesh
Swimming-pool reinforcement
| Buyer Check | KYA Reel Reference |
|---|---|
| Wire Gauge | 21 Gauge |
| Wire Diameter | 0.8mm |
| Wire Length | Approx. 100m |
| Reel Weight | Approx. 0.4kg |
| Material | Q195 Low-Carbon Steel |
| Surface | Galvanized |
| Reel Outside Diameter | Compare with original machine consumable. |
| Spool Width | Must fit machine reel compartment and feed path. |
| Hub Geometry | Confirm locking and rotation interface. |
| Winding Direction | Must match machine feed direction. |
| Original Part Number | Provide original consumable model when requesting replacement wire. |
This SKU is listed at approximately 100m and 0.4kg per reel, with 20 reels per box.
For distributor orders, confirm current carton quantity, carton dimensions, gross weight and pallet configuration before shipment.
KYA supplies automatic rebar tie wire for concrete contractors, reinforcement fabricators, precast plants, construction distributors and automatic rebar-tier users.
For replacement wire inquiries, provide the tying-machine manufacturer and exact model, original wire part number, reel dimensions, required wire finish, application and purchasing quantity.
KYA supplies automatic rebar tie wire in galvanized, black annealed, plastic-coated and stainless-steel configurations for conventional single-wire and other compatible automatic tying systems.
A nominal 0.8mm wire corresponds to the common 21 gauge automatic rebar tying wire class.
This KYA product is listed at approximately 100m of wire per reel with approximately 0.4kg net wire weight.
KYA lists approximately 120–190 ties per reel. Actual yield depends on the tying machine, rebar size, wrap count and wire length consumed per tie.
The product is specified as Q195 low-carbon steel with a galvanized surface.
No. Galvanizing improves corrosion resistance compared with untreated steel, but performance depends on coating thickness and environmental exposure.
This SKU lists nominal tensile strength of 420MPa and 21% elongation. Request current batch documentation where these values are contractually required.
No absolute guarantee should be assumed. Wire feeding depends on diameter consistency, spool winding, reel geometry, cutter condition, feed components and machine setup.
KYA references the RB397-type 21GA application. The original TW897A uses approximately 0.8mm wire and 95m per coil, so physical reel dimensions should be checked before replacing it with a 100m aftermarket reel.
Both belong to conventional 21GA / 0.8mm single-wire rebar tying systems, but they are associated with different tool generations and reel specifications. Always compare the exact consumable required by the tying machine.
RB395 is a legacy 21GA platform referenced by KYA. Confirm the original reel model and complete spool geometry before replacement.
KYA references these legacy 21GA applications. The exact original consumable and reel dimensions should be checked for the individual machine.
No. Automatic tying tools use different wire gauges, spool bodies and feeding systems. A matching wire diameter does not guarantee reel compatibility.
No. Twin-wire tools use a different wire gauge, reel design and feeding system and should not be treated as interchangeable with conventional 21GA single-wire reels.
Use the tie-wire material required by the project specification. Epoxy-coated reinforcement may require plastic-coated or another specified tie-wire surface rather than standard galvanized wire.
Yes. Precast reinforcement is a common application for compatible automatic rebar tying machines.
Yes. Foundations, footings, columns and reinforcement cages are typical applications for automatic rebar tying equipment.
Yes, when the wire material, coating and traceability comply with the project's construction requirements.
This SKU is listed at 20 reels per box. Confirm current carton and pallet packing before shipment.
Provide the tying-machine manufacturer and exact model, original consumable part number, wire diameter, reel outside diameter, spool width, hub dimensions, required surface treatment and purchasing quantity.
