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Help CenterSteel Billet & Low Carbon Wire Rod Billet，Q235B, Q195, S235JR, 35#, 45#, C45, S45C, 40Cr, 42CrMo, GCr15
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1. Product Overview
Steel billet is semi-finished steel product cast from molten steel via continuous casting process. It serves as the primary raw material for further rolling into round bars, angle steel, channel steel, steel pipe, wire rod, steel plate and other finished steel products. Common cross-section shapes include square billet, rectangular bloom and round billet.The product features uniform internal metallurgical structure, low internal defects and stable chemical composition, which guarantees consistent quality of downstream finished steel.
2. Product Classification & Specifications
2.1 Square Steel Billet
Executive Standard: GB/T 2660, EN 10025Section Size: 100×100mm, 120×120mm, 130×130mm, 150×150mm, 160×160mm, 180×180mm, 200×200mmStandard Length: 6m / 9m / 12m, customized fixed lengths availableApplication: Raw material for round bar, deformed steel rebar, wire rod, small section steel
2.2 Rectangular Bloom
Section Size: 220×260mm, 250×300mm, 300×400mm and larger sizesApplication: Raw material for thick steel plate, H-beam, large channel steel, seamless steel pipe
2.3 Round Billet
Diameter Range: Φ100mm–Φ600mmApplication: Raw material for hot rolled round bar, seamless pipe, forged parts
3. Common Material Grades
Ordinary Carbon Billet: Q235B, Q195, S235JRFor construction steel, common mechanical structural parts, low-demand rolling products
Medium Carbon Billet: 35#, 45#, C45, S45CFor high-strength round bar, fastener raw material, mechanical shaft blanks
Alloy Steel Billet: 40Cr, 42CrMo, GCr15For alloy round bar, bearing steel, heavy-duty machinery accessories
Low Carbon Wire Rod Billet: 10#, 20#For wire rod, welding wire, cold drawing products
4. Core Technical Requirements
Dimensional ToleranceSide length / diameter tolerance within ±2mm; length tolerance ±50mm for standard lengths
Internal QualityStrict control of segregation, shrinkage cavity, porosity and inclusions; ultrasonic inspection available for high-grade billets
Surface QualityNo deep cracks, severe scabs, heavy pits and surface slag; minor surface defects can be cleaned by grinding
Inspection DocumentsEach batch is attached with Mill Test Certificate covering chemical composition, tensile test and surface inspection records, supporting customs clearance and downstream factory recheck
5. Main Application Fields
Construction Industry: Raw material for rebar, wire rod, small structural steel
Pipe Manufacturing: Blank for seamless carbon steel pipe and alloy pipe
Machinery Manufacturing: Raw material for hot rolled round bar, forged gear and shaft parts
Profile Production: Base material for angle steel, channel steel, H-beam, flat steel
6. Packing, Marking & Delivery
6.1 Export Packing Standard
Steel billets are stacked and bundled with high-tensile steel strips; large-size blooms are fixed separately. Waterproof plastic film wrapped outside for sea transport to prevent rust and collision damage; fumigated wooden pallets are optional for container loading.
6.2 Marking Content
Metal tags are fixed on each bundle, marked with steel grade, section size, length, furnace number, gross/net weight and production standard.
6.3 Delivery Time (Ship from Tianjin Port)
Conventional spot billet specifications: 5–7 days loading and deliveryCustom alloy grades, special sizes and quality requirements: 7–15 days
6.4 Order Terms
Minimum order quantity: 20 tons; mixed grades and mixed sizes are acceptable; cutting service to custom lengths is available. Trade terms: FOB, CIF, CFR. Payment term: 30% TT deposit + 70% TT balance before shipment.
7. Product Advantages
Produced by continuous casting line, stable chemical composition, low impurity content, uniform internal grain structure
Full range of square, rectangular and round cross-section sizes, matching all downstream rolling production lines
Strict surface and internal defect inspection to reduce reject rate of finished steel for customers
Large spot stock volume, direct delivery from Tianjin Port with short lead time
Complete official test certificates provided for cross-border customs clearance and factory incoming inspection
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