Galvanized Plain (GP) slit coil offering unmatched deep-drawing and precise stamping characteristics. Ideally suited for metal brackets, industrial hinges, automotive components, and small hardware parts. Excellent thickness tolerance control with a highly consistent surface finish.
Precision Stamping GP Slit Coil for Hardware and Automotive Components
Welcome to Authentic Steel – Your Trusted Source for High-Precision GP Slit Coils
As an industry-leading steel strip factory in china and a premier precision slit coil supplier, Authentic Steel specializes in manufacturing and processing high-grade galvanized slit coils (GP slit coils / narrow galvanized strip) engineered specifically for metal stamping, hardware manufacturing, and automotive component fabrication. Located near the major export hub of Tianjin Port, our manufacturing facility operates advanced high-speed longitudinal slitting lines equipped with automatic tension control and micro-adjustable carbide rotary shears. This advanced infrastructure enables us to deliver clean-cut galvanized steel strips with minimal edge burrs, excellent camber control, and precise width tolerances tailored for high-speed automated stamping presses.
Product Name: Galvanized Precision Slit Coil (GP Slit Coil / Narrow Galvanized Strip)
Base Material: Hot-Dipped Galvanized Steel Coils (GI Coils) sourced from top partner mills including Baosteel, HBIS, Yanshan Steel, Rizhao, Anfeng, and Zongheng.
Thickness Range: 0.2mm – 4.5mm (Ultra-thin to heavy-gauge cold rolled and galvanized stock)
Width Range: 30mm – 870mm (Custom longitudinal slitting according to customer engineering drawings)
Zinc Coating Weight: 30g/m² to 600g/m² (Providing superior sacrificial anode corrosion protection for harsh environments)
Spangle Options: Zero Spangle, Regular Spangle, or Small Spangle (Smooth surface finish optimized for subsequent painting and stamping)
Coil Inner Diameter (ID): 508mm / 610mm
Coil Bundle Weight: 3 Metric Tons to 13 Metric Tons per coil
Material Standards: JIS G3302 SGCC, ASTM A653 DX51D, EN 10346 Z275, Q195, Q235B



Hardware & Fastener Manufacturing: Our precision GP slit coils provide uniform mechanical properties, excellent formability, and superior ductility for producing metal brackets, hinges, structural clips, and general construction hardware.
Automotive Reinforcement Parts: Engineered with tight thickness tolerances and stable yield strengths, our galvanized strips are widely utilized in automotive seat structures, window regulator channels, chassis reinforcements, and under-hood brackets.
Electrical Enclosures & Cable Trunks: The uniform hot-dipped zinc layer ensures exceptional outdoor weathering resistance and anti-corrosion performance for junction boxes, switchgear cabinets, and cable management trays.
Direct Factory Wholesale Pricing: By eliminating intermediate trading markups, our mill-direct pricing structure allows global stamping factories and service centers to secure maximum cost efficiency and stable profit margins.
Custom Slitting & Edge Conditioning: We offer customized width tolerances, deburred edge options, rounded edge conditioning, and protective oil coatings to prevent white rust during long-distance ocean transit.
Rigorous In-House Quality Assurance: Every production batch of GP slit coils undergoes strict laboratory testing in our certified testing center to verify zinc coating thickness, tensile strength, elongation, and surface smoothness.
Seaworthy Export Packaging & Logistics: Packaged securely with waterproof VCI anti-rust paper, heavy-duty steel strapping, edge protectors, and eye-to-sky or eye-to-wall wooden pallets to ensure damage-free delivery from Tianjin Port to your overseas facility.
Contact our international engineering and sales team today to request a mill-direct quotation, discuss custom width specifications, download technical datasheets, or order sample kits for your upcoming metal stamping operations!
Contact Us for Instant Quotation:
Sales Specialist: Bella
Email: bella@authsteel.com / bella@wanlusteel.com
Mobile / WhatsApp / WeChat: +86 18920410870