Rebar Tie Wire 18 Gauge Galvanized Coil 20kg For Construction Formwork

Rebar tie wire at 1.2 mm BWG18 is the size most crews settle on when they want a tie that holds a 32 mm bar without cutting into the formwork face and without the wrist fatigue that comes with heavier gauges. This galvanized coil is annealed to 320 - 400 MPa with 18% or more elongation, which is the window where the wire twists tight around a bar bundle and still releases cleanly from a hook or automatic tier. Too soft and the tie stretches when the cage is craned; too hard and the operator cannot close the twist by hand at all.

Formwork contractors care about two things that do not appear on a mill certificate: coil payoff behaviour and end cuts. A coil that tangles on the last third wastes labour on every pour. We layer wind these coils and deburr the cut ends, and we can supply cut and straightened tie lengths in 100 mm to 400 mm for yards that want to eliminate on site cutting entirely.

• Right softness window: 320 - 400 MPa annealed, tested for twist behaviour rather than only for tensile number.
• Grip and release: the galvanized surface has enough friction to hold the twist but releases from a tier hook without snagging.
• Formwork friendly: 1.2 mm keeps the tie from denting plywood or leaving a deep pocket in the concrete face.
• Layer wound coils: pays off from the inside without cross-over tangles, which keeps crews from cutting coils open in frustration.
• Light zinc protection: 20 - 35 g/m2 stops white rust during normal site storage and keeps rust staining off exposed concrete.
• Optional cut lengths: pre-cut and straightened ties from 100 mm to 400 mm for precast yards and repetitive pours.

Use it for slab reinforcement tying, column and beam cages, wall formwork spacer ties, precast panel reinforcement, and temporary bracing lacing. On precast beds the pre-cut length option removes a cutting step and a scrap pile; on high rise slabs the 20 kg coil is the practical unit because it fits a belt hook and lasts most of a shift. For marine concrete or bridge work exposed to chloride, upgrade to hot dipped 60 g/m2 or stainless tie wire, because a 20 g/m2 electro coating is a storage protection, not a service life coating.

Every lot is tested for tensile strength, elongation, diameter and coating mass, with a manual twist test on each pallet as a practical check that the anneal is uniform. Coil weight is verified on a calibrated scale to within 0.3 kg because underweight coils are a common and quiet way to lose money on tonnage. Packing integrity is checked before loading so bags do not split in the container. Mill test certificate, packing list and certificate of origin are issued with each shipment, and pre-shipment inspection by a third party can be arranged on request.

20 kg coils are bagged individually, labelled with gauge, weight and lot number, and stacked 50 coils to a pallet for a 1 ton pallet load, stretch wrapped and steel strapped. Cut lengths are bundled in 25 kg bundles with moisture barrier wrap. Lead time is 12 - 15 days after deposit. A 20 foot container takes about 25 tons of coiled wire. Standard terms are T/T 30% deposit with balance against the bill of lading copy, and L/C at sight is accepted for orders above 20 tons.