Premium Cold Rolled Black Annealed Steel Strips & Coils, precision heat-treated in a protective oxygen-controlled atmosphere to eliminate internal stress and work hardening. Features uniform softness, superior bendability, and a smooth protective dark oxide coating for high-efficiency processing.
Processing Services: Custom Precision Slitting & Cut-to-Length Available
Dimensions: Thickness 0.3–3.0 mm | Width 10–600 mm (Custom Slit / Deburred Edges)
Core Features: Soft Annealed, Deep Drawing Quality, Smooth Dark Oxide Coating
Primary Applications: Welded Pipe Manufacturing, Steel Strapping, Stamping Parts & Binding
Premium Cold Rolled Black Annealed Steel Strip & Coil
Authentic Steel is a premier global soft black annealed steel strip supplier, manufacturer, and exporter of high-ductility cold rolled black steel coil and strip products engineered for demanding industrial, agricultural, and construction applications. Produced from premium cold-rolled carbon steel substrates, our steel strips undergo continuous heat treatment in an oxygen-controlled, protective-atmosphere annealing furnace. This process eliminates internal work hardening, imparting exceptional flexibility, uniform elongation, and a characteristic smooth black iron oxide finish with mild atmospheric corrosion resistance.
Strictly conforming to international engineering benchmarks including ASTM A1088, ASTM A109, EN 10139, and JIS G3141, our soft black annealed steel strips provide predictable mechanical behavior for high-speed forming, bending, and deep-drawing processes.
Thickness Range: 0.2 mm to 4.5 mm with tight cold-rolled thickness toleran ces.
Width Range: 30 mm to 870 mm, available with custom precision slitting and deburred edge finishing.
Coil Specifications: 3 to 13 MT unit coil weight, with standard inner diameters of 508 mm or 610 mm for seamless integration with commercial decoilers.
Surface Options: Lightly oiled for extended shelf-life protection or dry black oxide finish for direct processing.
Commercial & Tube Quality (Q195 / SAE 1006): GB Q195/Q215 | ASTM SAE 1006/1008 | EN 10139 DC01 | JIS G3141 SPCC-SD (Optimized for high-frequency welded pipe and furniture tubing production)
Deep-Drawing Quality (Q235 / SAE 1010): GB Q235 | ASTM SAE 1010 | EN 10139 DC03/DC04 | JIS G3141 SPCD/SPCE (Ideal for complex cold stamping parts, hardware accessories, and deep drawing)
High-Tensile Strapping Quality (50# / 65Mn): GB 50#/65Mn | ASTM 1050/1065 | EN 10132 C55S/C67S | JIS G4801 SUP6 (Engineered for heavy-duty steel strapping and industrial binding tape)
Our soft black annealed steel strip is specifically formulated for high-stress cold-forming and mechanical fabrication:
Welded Pipe & Tube Production: Exceptional bendability and ductility allow smooth roll-forming and reliable high-frequency induction welding without surface cracking or seam failure.
Heavy-Duty Steel Strapping & Binding Tape: High tensile strength combined with high ductility makes our steel strip an ideal choice for securing heavy industrial cargo, timber, and steel bundles.
Precision Stamping & Deep Drawing: Uniform mechanical soft temper enables deep drawing and intricate cold stamping for automotive fittings, hardware, and industrial brackets.
Every batch of black annealed strip undergoes comprehensive laboratory testing prior to shipment, including yield strength, tensile strength, elongation percentages, Rockwell/Vickers hardness, and dimensional tolerance checks. Material Test Certificates (MTC EN 10204 3.1) and third-party pre-shipment inspections (SGS, Bureau Veritas) are provided standard.
Value-added processing services include custom precision slitting, cut-to-length sheet leveling, and edge deburring. To guarantee zero corrosion and physical damage during ocean transit, all shipments receive heavy-duty seaworthy packaging: anti-rust VCI paper, moisture-proof plastic wrapping, metal edge protectors, and heavy steel strapping securely anchored to sturdy wooden pallets.
Get a Fast Quote: Contact our technical export specialists today to receive custom slitting options, physical samples, and competitive wholesale pricing for your upcoming shipments!
WhatsApp: +86 137 8227 9845
Email: alice@authsteel.com
