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Help CenterSteel Billet & Custom Size Casting Billet，Q235B、Q345B、Q195、SS400、3SP、5SP、10#、20#、35#、45#、50Mn、40Cr、42CrMo
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1. Product Overview
Steel billet is a semi-finished steel substrate produced from steelmaking via continuous casting, serving as the basic raw material for rolling and forging all finished steel products and cannot be used directly. It features compact internal structure, uniform chemical composition and stable dimensional accuracy, and can be further processed through hot rolling, cold drawing, forging and piercing. It is widely applied in construction, machinery, steel pipe, forging and other industries. We have sufficient spot stock with a regular delivery cycle of 5-7 days, shipped from Tianjin Port to meet domestic engineering and foreign trade bulk orders.
2. Product Classification and Characteristics
2.1 Square Billet (For Construction & Profiles)
Standards: GB/T 20112, YB/T 001Specifications: 120×120mm to 200×200mmLength: Fixed lengths of 6m, 9m, 12m, custom lengths availableAdvantages: Flat surface, free of cracks and bubbles, thin decarburized layer and high finished product yieldApplication: Rolling deformed steel bars, round bars, angle steel, channel steel, wire rods, square tubes and other construction profiles
2.2 Rectangular Billet (Intermediate Blank for Profiles & Plates)
Specifications: 150×220mm, 160×240mm, 180×260mm and other non-standard customized sizesFeatures: Uniform deformation during rolling, effectively avoiding distortion and warpage of finished productsApplication: Raw material for I-beam, H-beam, flat steel, special-shaped steel and medium & small steel plates
2.3 Slab Billet (For Medium & Heavy Plates / Steel Coils)
Specifications: Thickness 150–240mm, width 880–1530mm, length 6–12mAdvantages: Compact slab surface, low segregation without internal porosity, delivering excellent performance of finished steel platesApplication: Hot rolled coils, medium & heavy plates, checkered plates, vessel plates, bridge plates, ship plates
2.4 Round Billet (For Seamless Pipes & Precision Forgings)
Specifications: Φ80–Φ500mmFeatures: Uniform force bearing, few internal impurities, no central shrinkage cavity and qualified flaw detection, suitable for high-pressure and high-strength working conditionsApplication: Seamless steel pipes, high-pressure pipe fittings, heavy-duty main shafts, gears and precision mechanical forgings
3. Main Material Grades
Ordinary carbon steel: Q235B, Q345B, Q195, SS400, 3SP, 5SP, for general construction profiles
High-quality carbon steel: 10#, 20#, 35#, 45#, 50Mn, for mechanical shafts, standard parts and precision profiles
Alloy steel: 40Cr, 42CrMo, 20CrMnTi, 60Si2Mn, for high-strength accessories of heavy industry, wind power and automobile industry
Special grade for construction steel: HRB400, HRB500, specially used for rolling seismic deformed steel bars
4. Dimensional Tolerance Standard
Cross-section tolerance: ±5mm; Length tolerance: ±50mmSurface quality: Free of cracks, scarring, folding and severe oxide scaleInternal quality: No shrinkage cavity, porosity or inclusion, ultrasonic flaw detection supported
5. Executive Standards
National Standards: GB/T 20112, YB/T 001, GB/T 699, GB/T 1591International Standards: JIS G3101, ASTM A36, EN 10025Mill test certificate, mechanical property report and chemical composition report are provided for each batch; SGS third-party re-inspection is acceptable.
6. Product Advantages
High finished product yield (over 98%), stable mechanical performance without batch difference, full range of specifications, compatibility with all deep processing techniques, sufficient inventory for fast delivery, export-grade quality suitable for ocean transportation.
7. Application Fields
Raw material for construction profiles, seamless steel pipes, mechanical forgings, medium & heavy steel plates, automobile and heavy industry accessories, hardware standard parts.
8. Packaging & Commercial Terms
Packaging: Bundled with steel strips; export orders wrapped with waterproof film and supported by wooden pallets for protectionLoading Port: Tianjin Port, loadable in 20GP/40HQ containersLead Time: 5-7 days for spot goods, 10-15 days for customized productsPayment Term: 30% TT advance payment, balance settled before shipmentQuality Warranty: Authentic material and guaranteed performance; unconditional return and replacement for defective products.
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