Feature highlights:HEA300 IPE500 I Beam UPN Durable structural steel 290*300*8.5*14 winged construction steel, made with hot-rolled technique, features high strength and is ideal for beam and column members in industrial and civil structures. With a flange width of 100-1000mm, thickness of 4-60mm, and length customizable up to 12m, it meets ASTM and JIS standards, ensuring reliable quality for steel structure load-bearing support.

Feature highlights:High-quality H-beams made from Q235B, SM490, SS400, and Q345B structural steel, suitable for workshops, warehouses, and high-rise buildings. Features include customizable dimensions, hot-dip galvanized surface treatment, and efficient load-bearing design. Certified with RoHS compliance, ensuring environmental safety and market access.
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HEB300 is a type of hot-rolled H-beam according to the European standard (EN 10034), belonging to the wide flange series (HEB), characterized by high strength and good structural stability.

Main Dimensions: According to the European standard, the specific dimensions of HEB300 are as follows:
Section Height (h): 300 mm
Flange Width (b): 300 mm
Web Thickness (t_w): 11 mm
Flange Thickness (t_f): 19 mm
Sectional Area: 149.1 square centimeters
Theoretical Weight: Approximately 117 kg per meter

I-beams/H-beams are primarily made of carbon steel and alloy steel. The specific types are as follows:
Ordinary carbon structural steel
Q235B carbon steel is a typical example. This type of I-beam offers excellent plasticity and weldability, making it suitable for general engineering structures.
Low-alloy high-strength structural steel
Low-alloy high-strength structural steel
Structural steel is made by adding a small amount of alloying elements (such as manganese and nickel) to ordinary carbon steel to enhance its strength and corrosion resistance. It is commonly used in applications requiring high performance, such as bridges and buildings.

Carbon steel rods are rod-shaped materials made of carbon steel.
Low carbon steel (≤0.25%): With an elongation exceeding 25%, it is suitable for stamping applications such as construction rebar and automotive panels.
Medium carbon steel (0.25%-0.6%): High strength. After quenching and tempering, it is suitable for mechanical parts such as shafts and rods.
High carbon steel (>0.6%): High hardness, commonly used in applications such as knives and springs that require high wear resistance and elasticity.
Processing properties: Low carbon steel has excellent weldability, while medium and high carbon steels require preheat treatment (such as quenching) to improve processing properties.
Typical applications:
Construction industry: Low carbon steels such as Q235 are used for rebar.
Mechanical manufacturing: Medium carbon steels are used for shafts and rods.

Stainless steel rods are primarily categorized into three main types: austenitic, ferritic, and martensitic. Austenitic stainless steel is widely used due to its excellent corrosion resistance and workability.
304L is a low-carbon version, offering enhanced resistance to intergranular corrosion after welding.
316L is an ultra-low-carbon version, further enhancing corrosion resistance.
The 310 series contains up to 25% chromium, enabling stable operation at temperatures up to 800°C.
Duplex steels contain 17%-22% chromium and 5%-8% nickel, offering superior strength and corrosion resistance to ordinary stainless steels and are commonly used in marine engineering.
The 410 series (e.g., 410) offers high hardness but weaker corrosion resistance, making it commonly used in knives.
The 430 series (e.g., 430) offers outstanding wear resistance, making it suitable for decorative applications.

Hot Rolled Steel Coils SS400

Product Specifications and Pricing
Thickness and Width:
1.5mm: Width 800-1600mm (Common 1250mm)
2.0mm: Width 1000-1500mm (Customizable)
2.5mm: Width 1250-1600mm (Coil Weight 3-10 Tons)

Material Standards: ASTM A36/A36M, GB/T 700 (Q235B)

Chemical Composition:
Carbon (C) ≤0.25%, Manganese (Mn) 0.80%-1.20%, Sulfur (S) ≤0.05%

Mechanical Properties:
Yield Strength ≥250MPa, Tensile Strength 400-550MPa, Elongation ≥20%

Applications
Construction: Steel frames, bridges, roof panels (2.5mm is commonly used)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm is suitable)
Ships and containers: Reinforcement ribs, inner linings (Z275 galvanized coating is optional)

Hot Rolled Coil ASTM A36 Carbon Steel Coil

Product Specifications and Pricing
Thickness and Width:
1.5mm: Width 800-1600mm (Common 1250mm)
2.0mm: Width 1000-1500mm (Customizable)
2.5mm: Width 1250-1600mm (Coil Weight 3-10 tons)
Material Standard: ASTM A36/A36M, GB/T 700 (Q235B)

Chemical Composition:
Carbon (C) ≤0.25%, Manganese (Mn) 0.80%-1.20%, Sulfur (S) ≤0.05%

Mechanical Properties:
Yield Strength ≥250MPa, Tensile Strength 400-550MPa, Elongation ≥20%

Applications
Construction: Steel frames, bridges, roof panels (2.5mm is commonly used)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm is suitable)
Ships and containers: Reinforcement ribs, inner linings (Z275 galvanized coating is optional)

Product Definition and Classification
Hot-dip galvanized steel coils are corrosion-resistant steels made by dipping carbon steel coils into molten zinc (approximately 450°C) to form a zinc-iron alloy layer (Zn-Fe). Based on the weight of the zinc layer, they are categorized as follows:
Z60-Z120: Zinc layer 60-120g/m² (light corrosion protection)
Z180-Z275: Zinc layer 180-275g/m² (heavy corrosion protection, such as building structures)

Technical Parameters and Pricing
Thickness 0.12-6.0mm (common 0.3-3.0mm)
Zinc layer weight 30-600g/m² (double-sided)

Core Application Scenarios
Construction: Roof panels, wall panels (requires a zinc coating of Z180 or higher)
Home Appliance Manufacturing: Refrigerator back panels, washing machine housings (Z60-Z80)
Automotive: Chassis components, exhaust pipes (requires fingerprint-resistant treatment)

Q235 Hot Rolled Steel Coils
Product Specifications
Thickness and Width:
1.5mm: Width 800-1600mm (1250mm common)
2.0mm: Width 1000-1500mm (customizable)
2.5mm: Width 1250-1600mm (coil weight 3-10 tons)

Material Standards: ASTM A36, GB/T 700 (Q235B)
Surface Treatment: Bare or Shot Blasted

Applications
Construction: Steel structure frames, roof panels (2.5mm thickness is common)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm thickness is suitable)
Ships and containers: Reinforcement ribs, lining plates (optional Z275 galvanized coating required)

S235JR Cold-Rolled Steel Coil
Grade: S235JR (European Standard EN 10025-2), a non-alloy structural steel corresponding to China's Q235B.
Surface Treatment: Pickling or GI coating is typically required after cold rolling to improve corrosion resistance.
Cold Rolling Process: Thickness 0.3-6.0mm, Width 600-1500mm, Coil Weight 3-10 tons (Standard Coil ID 508/610mm).
Surface Condition: Smooth surface finish (SPCC grade) after cold rolling, with custom pickling or oiling available.

Applications
Building Structures: Beams, columns, roofs (requires galvanizing or spray coating for corrosion protection)
Machinery: Drive shafts, gears, molds
Automotive Parts: Chassis, suspension systems (requires high-precision cold rolling)

Comparison with Other Grades
S235JR vs. SPCC: S235JR is structural steel, while SPCC is ordinary cold-rolled steel with lower strength.
S235JR vs. Q235B: They offer similar performance, but Q235B has a slightly higher sulfur content limit (0.045%).

DX51D Cold Rolled Steel Coils

Grade: DX51D (JIS G3302 standard), cold-rolled steel coil for hot-dip galvanized substrates, corresponding to the Chinese standard SGCC

Production Process and Specifications
Cold Rolling Process: Thickness 0.12-3.0mm, Width 20-1500mm, Coil Weight 3-10 tons (Standard Coil ID 508/610mm)
Galvanizing Process: Hot-dip galvanizing (Z30-Z275), with surface options of Zero Spangle, Mini Spangle, or Regular Spangle.
Surface Treatment: Additional chromating, oiling, or passivation treatments are available to enhance corrosion resistance.

Applications
Construction Industry: Roofing, wall cladding (PPGI color-coated sheet)

Comparison with Other Grades
DX51D vs. SPCC: DX51D is a galvanized steel substrate, while SPCC is ordinary cold-rolled steel that requires subsequent galvanizing.
DX51D vs. SGCC: DX51D is a JIS standard grade, while SGCC is its Chinese counterpart, offering similar performance.

304 Cold Rolled Stainless Steel Coil

Basic Properties and Grades
Grade:
JIS Standard: SUS304 (0Cr18Ni9)
ASTM Standard: 304/304L (Low Carbon Version)

Chemical Composition:
C ≤ 0.07% (304L ≤ 0.03%), Cr 17.0-19.0%, Ni 8.0-11.0%
Magnetic Properties: Weakly magnetic or non-magnetic at room temperature (cold working may induce martensitic transformation)

Production Process and Specifications
Cold Rolling Process: Thickness 0.025-4.0mm, Width 10-1500mm, roll weight customizable.
Surface Finish:
2B (matte), BA (mirror), 8K (high-reflective mirror), HL (hairline).
Annealing: Solution treatment (1050-1100°C) eliminates cold working stress and restores the austenitic structure.

Common Grades and Standards
DC01/DC03/DC04: Low-carbon cold-rolled stainless steel coil, conforming to JIS G3141. Suitable for deep-drawn parts (such as appliance housings and automotive parts).
304/316L: 300 series austenitic stainless steel, with a smooth surface finish after cold rolling (2B/BA) and high corrosion resistance. Suitable for food processing and chemical equipment.

Production Process and Specifications
Cold-rolled process: Thickness 0.1-3.0 mm, width 10~1500mm, roll weight can be customized on demand
Surface treatment: 2B (matte), BA (mirror), HL (hairline), etc. are available to meet the needs of different industries
Typical application areas
Automobile manufacturing: exhaust systems (304/316L), fuel tanks (DC01)
Home appliance industry: refrigerator liners (304), washing machine drums (DC03)
Industrial equipment: chemical pipelines (316L), precision instruments (304)

Cold-rolled steel coil is primarily made from low-carbon steel, processed through a cold-rolling process. Using low-carbon steel as raw material, cold-rolled steel coil typically has a carbon content between 0.1% and 0.25%. Some products may contain low-alloy or high-alloy components.
Strength and Hardness: Cold-rolled steel sheet generally has higher strength and hardness than hot-rolled material, but work hardening may increase yield strength.
Ductility: Annealed cold-rolled steel coil (such as SPCC and DC01) has better ductility and is suitable for stamping; unannealed (chilled) coil has higher hardness and is suitable for simple forming.
Common Grades
Common grades include SPCC, SPCD, SPCE, DC01, and DC03. SPCC is ordinary cold-rolled carbon steel, while DC01 is annealed cold-rolled steel sheet.