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Help CenterSteel Billet & Pipe Production Steel Billet，Q235B、Q355B、20#、45#、40Cr、42CrMo、20CrMnTi
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1. Product Overview
Steel billet is a semi-finished steel product after smelting and serves as the basic raw material for rolling and forging. It is formed by continuous casting process with compact texture, uniform material composition and low internal impurities. As the core base material for steel deep processing, it can be further rolled into various profiles such as round steel, square steel, angle steel, channel steel, steel plate and wire rod. It is widely used in building steel structures, mechanical manufacturing, hardware processing, mold forging, bridge engineering, heavy industry equipment and other fields. We provide complete specifications, sufficient stock, customized cutting and processing services, as well as bulk domestic and foreign orders.
2. Product Classification and Production Process
2.1 Continuous Casting Square Billet
Formed by fully automatic continuous casting, it features regular cross-section, good surface quality and dense internal structure without shrinkage, porosity, cracks and other defects. With high yield rate and excellent cost performance, it is the mainstream general-purpose steel billet in the market, mainly used for rolling various profiles, bars and structural parts.
2.2 Continuous Casting Rectangular Billet
With a rectangular cross-section, it is suitable for rolling steel plates and wide profiles. It features stable shape and uniform deformation, ideal for mass deep processing. It is commonly used as the primary blank for medium and heavy plates, strip steel and large steel structure materials.
2.3 Round Billet
Continuous casting billet with circular cross-section, specially applied for hot-rolled round steel, seamless steel pipes and forging blanks. It has high concentricity and uniform structure, meeting the processing requirements of high-precision mechanical parts and high-strength alloy steel.
2.4 Forged Steel Billet
Custom-produced for high-strength and high-toughness products. After forging and densification treatment, the internal grains are refined, and the mechanical properties are far superior to ordinary continuous casting billets. It is suitable for high-end fields such as heavy machinery, wind power equipment, pressure vessels and high-end molds.
3. Main Material Grades
3.1 Carbon Structural Steel Billet
Q235B, Q355B: Highly versatile with good toughness and excellent weldability and cost performance. Suitable for building structures, ordinary profiles, embedded parts and general mechanical processing parts.
3.2 High-quality Carbon Steel Billet
20#, 45#: High material purity and uniform structure, suitable for deep processing such as quenching and tempering. Mainly used for blanks of shafts, gears, fasteners and precision mechanical parts.
3.3 Alloy Steel Billet
40Cr, 42CrMo, 20CrMnTi: Stable alloy composition with high strength, wear resistance, fatigue resistance and high temperature resistance. Applied in heavy industry equipment, hydraulic parts, transmission components and high-end forgings.
4. Specification Parameters
Square Billet Specifications: Conventional sizes include 100×100mm, 120×120mm, 130×130mm, 150×150mm, 165×165mm, 180×180mm, 200×200mm with complete stock availability.
Rectangular Billet Specifications: 160×220mm, 180×240mm, 200×260mm and other customized sizes are available.
Round Billet Specifications: φ80mm–φ350mm, covering full-size requirements for conventional rolling and forging production.
Standard Length: 6m, 9m, 12m. Custom fixed-length cutting, short-size processing and arbitrary cutting services are supported.
Dimensional Tolerance: Strictly controlled cross-section size, flatness and verticality with flat and burr-free end faces, fully meeting the precision requirements of subsequent rolling, forging and cutting processes.
5. Core Product Features
1. Stable Material Quality: High-purity molten steel with uniform composition, small batch deviation, no steel mixing or segregation problems, ensuring stable deep processing performance.
2. Dense Internal Structure: Mature continuous casting technology eliminates internal defects such as bubbles, porosity and interlayers, achieving high finished product rate and avoiding cracking and deformation during processing.
3. Strong Plasticity: Compatible with various processing technologies including rolling, forging, bending, welding and cutting, with excellent adaptability for deep processing.
4. Excellent Surface Quality: Smooth billet surface without slag inclusion, cracks or oxidation pits, reducing secondary polishing costs.
5. Balanced Mechanical Properties: Optimized matching of strength, toughness and ductility, satisfying the usage demands of both conventional structural parts and high-end tempered forgings.
6. Implementation Standards
The products strictly comply with national standards GB/T 2665, GB/T 699, GB/T 3077 and other continuous casting billet specifications. They also meet international standards such as ASTM, JIS and EN. Material certificates, furnace inspection reports and factory quality certificates are provided to support domestic acceptance and foreign trade customs clearance.
7. Application Scope
1. Profile Rolling: Used for rolling round steel, square steel, flat steel, angle steel, channel steel, I-beam, wire rod and other steel profiles.
2. Mechanical Manufacturing: Base materials for mechanical bases, supports, shaft parts, gears, pin shafts and forging parts.
3. Construction Engineering: Steel structure components, embedded blanks, bridge accessories and infrastructure load-bearing parts.
4. Mining & Heavy Industry: Blank materials for mining machinery, construction machinery, hydraulic equipment and heavy-duty equipment forgings.
5. Pipeline & Auto Parts: Raw materials for seamless steel pipe blanks, automotive transmission parts and precision mechanical components.
6. Mold Industry: Rough blanks for ordinary molds and mechanical tooling molds.
8. Product Advantages
1. Source Quality Assurance: Direct supply from steel mills with clear furnace numbers and qualified spectrum detection, ensuring genuine and stable material quality.
2. Sufficient Stock & Complete Specifications: Full range of conventional billets in stock for fast production arrangement and immediate delivery upon order.
3. Complete Processing Support: Provide pre-processing services such as fixed-length sawing, flattening, polishing and chamfering to save secondary processing costs for customers.
4. High Finished Product Rate: Minimal internal defects and low processing loss, effectively reducing customers' production costs.
5. Strong Supply Capacity: Support large-volume truckload and full-container shipment with direct domestic delivery and stable port delivery for foreign trade.
9. Packaging & Shipment
1. Standard Packaging: Steel billets are bundled and fixed by category. Each bundle is clearly marked with furnace number, material grade, specification, weight and production date for full traceability.
2. Anti-rust Protection: Anti-rust treatment and waterproof wrapping are available for export orders to prevent oxidation and collision damage during transportation.
3. Transportation Modes: Support truck, railway and sea container transportation, suitable for domestic engineering supply and global foreign trade export.
4. Weight Measurement: Weight is subject to weighed measurement, with both theoretical calculation and physical weighing available.
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