Name: Steel wire rods for construction and manufacturing industries
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Steel wire rods for construction and manufacturing industries

Exceptional Surface Quality: Minimal surface defects for improved drawing performance
Precise Dimensional Control: Tight tolerances ensure processing consistency
Superior Drawability: Optimized microstructure for excellent cold working properties
Multiple Material Grades: From general purpose to high-strength applications
Custom Packaging: Coiled, strapped, or spooled to meet your handling requirements

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◉ PRODUCT SPECIFICATION

Available Grades & Standards

Grade Category	Standard Grades	Key Characteristics	Primary Applications
Low Carbon	Q195, Q235, SWRM6-10	Good ductility, excellent welding properties	Nails, mesh, wire fencing, general hardware
Medium Carbon	35-55#, SWRCH35K-45K	Balanced strength and formability	Bolts, automotive parts, general fasteners
High Carbon	60-80#, 72A-82A	High strength, excellent wear resistance	Springs, piano wire, saw blades, cables
Low Alloy	20MnSi, 30MnSi	Enhanced strength, good weldability	Prestressed concrete strands, reinforced wire
Cold Heading	SWRCH18A-22A	Superior cold formability	Complex fasteners, precision components

Standard Dimensions & Tolerances

Diameter Range: 5.5mm to 20mm
Standard Diameters: 6mm, 6.5mm, 8mm, 10mm, 12mm, 14mm
Diameter Tolerance: ±0.3mm (standard), ±0.15mm (precision)
Ovality: ≤0.4mm (standard), ≤0.2mm (precision)
Coil Weight: 1-2 tons (standard), up to 2.5 tons (custom)

Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Reduction of Area (%)
Q235	410-540	≥235	≥25	≥50
45#	590-710	≥335	≥16	≥40
65#	690-950	≥410	≥9	≥30
20MnSi	≥550	≥400	≥14	≥45

Surface Quality Options

Plain: Natural mill surface with controlled oxide layer
Phosphated: For improved corrosion resistance and drawing lubrication
Copper Coated: Enhanced corrosion protection and drawability
Pickled & Oiled: Clean surface ready for processing

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration