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Help CenterSteel Billet & Raw Billet for Section Steel，Q195、Q215、Q235B、Q355B、SS400、3SP、5SP、10#、20#、35#、45#
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1. Product Overview
Steel billet is a semi-finished steel product after steel smelting, serving as the basic raw material for rolling and forging various finished steel products. It is formed via steelmaking, refining and continuous casting, featuring dense internal structure, uniform chemical composition and low impurity content. With reliable stability, good plasticity and excellent deep workability, steel billet is widely used for construction steel, sections, mechanical processing, forging, plate rolling and other fields. It is a core intermediate product connecting upstream and downstream in the steel industry.
2. Product Classification
2.1 Square Billet (Main Product)
Square cross-section with the widest application
Common sizes: 120×120mm, 130×130mm, 150×150mm, 160×160mm, 180×180mm, 200×200mm
Application: Raw material for deformed steel bar, round bar, wire rod, angle steel, channel steel and small pipes
2.2 Rectangular Billet
Cross-section with unequal length and width
Common sizes: 150×330mm, 150×380mm, 165×410mm
Application: Raw material for medium & heavy plate, strip steel, H-beam and large sections
2.3 Round Billet
Circular cross-section
Application: Hot rolled round bar, seamless pipe blank, large forgings and shaft blanks
3. Production Process
Smelting in steelmaking furnace → LF refining for composition adjustment → Continuous casting forming → Flame cutting to fixed length → Surface conditioning → Quality inspection and warehousingStable production process with low segregation, few bubbles and dense internal structure, suitable for high-speed rolling and forging.
4. Common Material Grades
Ordinary Carbon Steel Billet
Q195, Q215, Q235B, Q355B, SS400, 3SP, 5SP (popular for export)
High Quality Carbon Steel Billet
10#, 20#, 35#, 45#, suitable for machining, quenching & tempering and forging
Special Steel Billet
Billet for HRB400 / HRB500 seismic rebar, alloy structural steel billet, special pipe blank material
5. Specification Parameters
Conventional cross-section: 120–200mm square billet; customized rectangular and round billet available
Standard length: 6m, 9m, 12m; fixed length and multiple length can be customized
Surface condition: Original black surface, free from severe cracks, scabs, laminations and slag inclusions
Quality requirements: Precise dimensional tolerance, smooth end face, small camber, qualified internal ultrasonic inspection
6. Executive Standards
National Standards: GB/T 26604-2011, GB/T 700, GB/T 699Production complying with ASTM, EN, DIN, JIS, GOST standards is acceptable for export.
7. Product Advantages
Stable chemical composition, small batch variation and high finished product rate
Uniform internal structure with less porosity and bubbles, resisting cracking during rolling
Clean surface with fewer defects and small machining allowance
Compatible with various deep processing technologies including hot rolling, forging and stamping
Cost-effective and stable supply, ideal for mass rolling mills and deep processing enterprises
8. Application Fields
✅ Construction steel industry: Raw material for rebar, wire rod, round bar, flat steel, angle steel and channel steel
✅ Pipe industry: Raw material for seamless steel pipe and welded pipe blanks
✅ Machinery manufacturing: Blanks for shafts, flanges, pin shafts and forgings
✅ Steel structure industry: Raw material for rolling sections, steel plates and special-shaped steel
✅ Export business: Engineering and infrastructure materials for the Middle East, Africa, Southeast Asia
9. Packaging Method
Conventional steel billets: Bundled with steel strips and stacked neatly; specifications, material grade and heat number sprayed on end faces
Bulk large shipments: Loose loading by full truck, orderly stacked and reinforced to prevent sliding
Export packing: Anti-rust protection, reinforced binding and customized shipping marks available for long-distance sea transportation
Mill Test Certificate, chemical composition report and mechanical property report are provided for each batch.
10. Delivery Cycle
Conventional plain carbon billet Q235 / 3SP / 5SP: Shipment within 3–5 working days
High quality carbon steel and low alloy billet with fixed-length processing: Shipment within 5–7 working days
Special grades, large sizes and forward orders: Shipment within 7–15 working days
Priority production arrangement for bulk orders; full truck and container direct delivery supported.
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