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Technical Specifications

Engineering Hub & Material Selection

Galvanized Steel Coil, Slit Strip & Sheet Technical Datasheet

Sterling Steels Co is an ISO-aligned processor and industrial engineering partner offering premium Galvanized Steel Coils (GI Coils) , high-tensile Galvanized Plain (GP) Slit Coils , and custom structural plates within Taloja MIDC, Navi Mumbai. Our advanced metal manufacturing lines deploy heavy-duty shape-correcting levelers and automatic precision width slitting systems. We convert premium master coils sourced from primary mills like JSW Steel, TATA Steel, and AMNS India into exact sub-millimeter tolerances. Engineered to resist punishing outdoor environments, our processed metal supplies deliver structural formability, reliable spot weldability, and superior zinc-adhesion metrics across all engineering frameworks.

Rows of processed high-precision hot-dipped galvanized steel master coils inside the Sterling Steels Taloja MIDC logistics distribution warehouse

1. Core Dimensional & Structural Parameters

Our high-speed slitting lines accurately process standard mill-edge master sheets and narrow slit-edge strip coils. Thickness profiles, structural width configurations, and total mass volumes are adjusted to fit automated automotive press lines or high-capacity infrastructure roll forming setups.

Technical Parameter Standard Commercial Range Custom Capability / Special Grades
Thickness Range 0.12 mm to 4.00 mm Ultra-thin specialized gauges down to 0.10 mm available for custom mill production runs.
Width Configuration 50 mm up to 1500 mm (Custom Cut) Precision slit widths executed from 12 mm up to a maximum master coil sizing boundary of 1600 mm.
Zinc Coating Mass (GSM) Z80, Z120, Z180, Z275 g/m² Heavy coating protections matching Z350 or specialized structural Z450 barrier weights for corrosive environments.
Internal Diameter (ID) 508 mm / 610 mm Fully adjustable utilizing protective fiber cores or highly precise expandable mandrels.
Outer Diameter (OD) 900 mm to 1800 mm Optimized to match heavy transport vehicle payload maximums and standard factory logistics crane tolerances.
Coil Weight Capacity 3.0 Metric Tons to 15.0 Metric Tons Custom down-coiled slit bundles safely securebound from 500 kg up to 6000 kg weights.

2. International Standards & Material Classification Grades

We process structural metals in compliance with primary global standardization boards. This guarantees consistent zinc layout distribution, high-ductility elongation values, and negligible raw substrate impurities during demanding multi-stage deep drawing cycles.

Standard Specification Material Grades Available Primary Industrial Application
IS 277 (Bureau of Indian Standards) GP, GC, GPSP (Skin Passed), Structural Grade (SG 220 / 250 / 350) Utility solar mounting structures, HVAC duct work trunking, heavy roofing elements, custom power panel boxes.
ASTM A653 / A653M (American Standards) CS (Type A, B, C), FS, DDS, EDDS, SS (Grade 33 to 80) Automotive crumple frame components, deep-drawn manufacturing products, commercial ventilation system frameworks.
EN 10346 (European Market Standards) DX51D+Z, DX52D+Z, DX53D+Z, DX54D+Z, S220GD to S350GD High-precision white goods appliances, engineering control desks, component brackets destined for export assemblies.
JIS G3302 (Japanese Industrial Standards) SGCC, SGCC-1, SGCD3, SGC340 to SGC570 Acoustic cleanroom panels, tight-tolerance bracket stamping profiles, industrial cable management trays.

3. Surface Finish & Passivation Classifications

Surface chemical properties directly impact secondary powder coating cross-linking reliability and anti-white-rust storage cycles. Always communicate your production plant requirements to ensure matching metallurgy options:

Spangle Aspect

Available in Regular Spangle, Minimized Spangle, or completely smooth Zero Spangle profiles for high-gloss decorative powder coating layouts or premium automotive exterior skins.

Chemical Passivation

Traditional Chromated Treatment (C), modern Eco-Friendly Non-Chromated (NC) solutions, and Phosphated (P) options for maximum molecular mechanical adhesion bonding layers.

Surface Oiling

Oiled (O), Un-oiled dry profile (UO), or Lightly Oiled (LO) to perfectly balance long-haul ocean transport protection with straightforward factory degreasing cycles.

Skin-Pass Mill Roll

Specialized GPSP processing scales out mechanical stretch-strain localized flaws, delivering uniform thickness surface profiles critical for deep drawing stamping tools.

Extensive Steel Stock

We maintain a massive multi-ton inventory of raw steel coils and sheared plates across multiple industrial grade levels. Our advanced slitting bays integrate shimless tooling setups, shape correction engineering, and continuous online width-thickness monitoring systems.

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Custom Processing Solutions

Providing specialized leveler stretching, multi-blanking shearing, and edge-deburring operations tailored to custom dimensions. Our cold-reducing support framework maintains tight physical tolerances, precise decambering control, and smooth edge rolling paths.

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Sectors We Supply

Sterling Steels Co is an approved supplier to core infrastructure engineering projects. We distribute verified commercial raw materials into high-volume automotive stamping lines, large solar energy parks, complex HVAC system assemblies, and automated structural engineering plants.

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Taloja MIDC Hub Advantage

Strategically placed in Taloja MIDC, Navi Mumbai, our processing facility sits adjacent to Western India's primary iron and steel marketplace. Our integrated distribution framework guarantees fast freight loading lines to key economic corridors across India.

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WHAT WE OFFER

Certified Industrial Quality Galvanized Steel Supplies

We supply a versatile stock assortment of heavy-duty galvanized structural metals, encompassing specialized continuous hot-dipped sheets, precision cut-to-length plates, rust-resistant Galvalume, and slit coil strips. Our strict processing controls guarantee that each raw supply line matches the exact performance parameters required by architectural engineers. Utilizing value-added tooling procedures—such as industrial slitting, custom leveling, automatic blanking, piercing, edge rolling, and hydraulic shearing—our facility turns raw mill components into precision products shipped on schedule.

High-corrosion resistance hot-dipped zinc master stocks ready for profile bending, roll formatting, and deep press stamp operations.

Sub-millimeter accurate slit edge profiling down to 12 mm widths, ideal for automated tube mills and cable tray stamping channels.

Custom level-corrected sheets flat-sheared or multi-blanked cleanly to eliminate stretcher strain flaws during control box fabricating steps.

Thicker gauge structural structural panels built for solar purlin brackets, heavy base mount platforms, and coastal HVAC frames.

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