O · Ø0.8–4.0 · St1kp–St3 · GOST 3282
Annealed tying wire
Soft heat-treated wire 0.8–4 mm for tying reinforcement cages and mesh
Wire and mesh
Low-carbon wire to GOST 3282 and mesh made from it and from rebar: tying reinforcement cages, reinforcing masonry and screeds, road bases, fencing. Chinese mills draw the wire from Q195–Q235 wire rod and weld mesh on multi-point machines to GB/T 343 and GB/T 1499.3; the bureau agrees the specification against GOST, inspects the batch at the mill before shipment and delivers it to the warehouse with a mill test certificate.
GOST 3282-74GOST 6727-80GOST 23279-2012GOST 8478-81GOST 5336-80GOST 34028-2016GB/T 343-2012GB/T 1499.3GB/T 13788ASTM A641/A641MASTM A853ASTM A1064/A1064MASTM A392EN 10244-2EN 10080EN 10223-6
Items in this category
1Ts · 2Ts · Ø0.5–6.0 · GOST 3282 · ASTM A641
Galvanized wire
Low-carbon wire 0.5–6 mm with zinc coating for outdoor work and fencing
VR-1 · Ø3–6 · 50×50–200×200 · GOST 8478 · GOST 23279
Welded masonry and road mesh
Mesh of 3–6 mm cold-drawn wire with 50–200 mm openings in sheets and rolls
A500C · Ø6–12 · 100×100–200×200 · sheets 2×6 m · GOST 23279
Welded reinforcing mesh
Mesh of A500C rebar 6–12 mm in 2×6 m sheets for slabs, floors and foundations
Mesh 20–60 · Ø1.4–3.0 · black · galvanized · GOST 5336
Chain-link mesh
Single-woven mesh with 20–60 mm openings from black and galvanized wire in rolls
Description
The category covers general-purpose wire and products made from it. Wire is produced by drawing 5.5–8 mm wire rod through a series of dies; after drawing it is work-hardened, and for tying wire the mill anneals it in bell furnaces to restore ductility. Galvanized wire is coated by hot-dip or electrolytic zinc plating; the coating class is set by the zinc weight per square metre of surface.
Welded masonry and road mesh is assembled from 3–6 mm cold-drawn wire by resistance spot welding at every intersection. Reinforcing mesh is welded from A500C or B500C bars of 6–12 mm and replaces manual tying on slabs, floors and foundations. Chain-link mesh is woven from 1.4–3 mm wire in spirals without welding and is supplied in rolls.
For Uzbekistan the base standard remains GOST: 3282 for wire, 23279 and 8478 for welded mesh, 5336 for chain-link. Chinese mills work to GB/T 343 and GB/T 1499.3, so the specification fixes both the GOST requirements and the steel grade to GB. The batch is inspected at the mill: wire diameter, mesh opening, zinc weight, weld joint strength, correspondence of the certificate to the heat. Rejected material recorded in an inspection report is replaced; the replacement is supplied by the manufacturing mill under its contract with the bureau.
Grade equivalents
| GOST | GB (China) | ASTM | EN | Note |
|---|---|---|---|---|
| St1kp (GOST 380) | Q195 | AISI 1006 | C4D (EN 10016-2) | Nearest equivalent by carbon content; wire rod steel for soft tying wire |
| St2kp, St3kp (GOST 380) | Q215, Q235 | AISI 1008 | C7D (EN 10016-2) | Nearest equivalent; for galvanized wire and chain-link mesh. Q235 is stiffer than St2kp; the grade is fixed in the specification |
| O wire (annealed, GOST 3282) | 退火钢丝 (GB/T 343) | ASTM A853 annealed | EN 10218-2 | Equivalence by delivery condition, not by steel grade: EN 10218-2 sets only diameter tolerances |
| 1Ts, 2Ts (GOST 3282) | 热镀锌 / 电镀锌 (GB/T 343) | ASTM A641 Class 1, Class 3 | EN 10244-2 class A–D | Classes are defined by zinc weight per m² and do not match directly; the specification states the coating weight in g/m² |
| VR-1 (GOST 6727) | CRB550 (GB/T 13788) | ASTM A1064 D-wire | B500A (EN 10080) | Nearest equivalent: VR-1 is cold-drawn with indentations, CRB550 is cold-rolled ribbed; strength is close, the profile differs |
| A500C (GOST 34028) | HRB400E, HRB500E | Grade 60 (ASTM A615) | B500B (EN 10080) | Nearest equivalent by yield strength is HRB500E (500 N/mm²); HRB400E is lower (400 N/mm²); for reinforcing mesh the specification states the class to GOST 34028 and the grade to GB/T 1499.2 |
Equivalents are the closest match, not identical: chemistry and tolerances differ between standards. The exact grade and standard are written into the contract.
Buyer questions
How to read a mill test certificate for wire and mesh
The mill test certificate (MTC) states the standard, steel grade, wire rod heat number, chemical composition, diameter, tensile strength, elongation and number of reverse bends; for galvanized wire, the zinc weight per m². The bureau checks the heat number against the tag on the coil or mesh bundle and against the marking on the packaging: a certificate without a matching heat is not accepted.
How tying wire differs from galvanized wire and which to choose
Tying wire is annealed (O), soft, bends by hand and does not spring back; it is used for tying reinforcement cages and stays inside the concrete, where corrosion is not critical. Galvanized wire is usually unannealed, stiffer, with a zinc coating of class 1Ts or 2Ts; it works outdoors: fencing, guy wires, fixing mesh. Galvanized wire is not needed for tying cages, and black wire is not suitable for outdoor use.
How the tonnage of wire and mesh is calculated
Wire is calculated by weight: the weight per linear metre equals 0.006165·d², where d is the diameter in millimetres; the length per coil and per tonne follows from this. Welded mesh is calculated by weight per square metre: twice the number of wires per metre multiplied by the weight per metre of wire, plus the overhangs at the sheet edges. Chain-link mesh is counted in rolls of a given width and length; the roll weight is stated in the mill certificate.
What is checked during inspection at the mill
Wire diameter with a micrometer in two perpendicular directions on several coils of the batch, ovality, absence of scale and cracks; for galvanized wire, zinc weight by the gravimetric method and coating adhesion by wrapping around a mandrel. For welded mesh: wire diameter, mesh opening, sheet dimensions, shear strength of weld joints, number of unwelded joints. The certificate is checked against the heat, along with marking, tag and packaging; an inspection report with photographs is drawn up.
How a batch is formed and whether there is a minimum quantity
The batch is sized to your quantity; send a specification with diameters, mesh openings, sheet or roll dimensions and coating requirements. Wire and mesh of different sizes are combined in one container so that the load is complete; the weight of coil, roll and bundle is agreed with the mill when the order is placed.
Price request
Send your specification and we will quote your batch
Steel pricing depends on grade, size, tonnage and delivery terms on the day of contract. A number on the page would be wrong by the time you read it.
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