Gnee Steel (tianjin) Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Delivery Time | 5-10 week day |
| Yield strength | 355 MPa |
| Material grade | Q355B |
| Size range | 100*50*5*7-900*300*16*28mm |
| Surface treatment | Galvanized / Black |
| Theoretical weight | 10.5-37.1 kg/m |
| Processing technique | Hot rolled / Welded |
| Brand Name | GNEE |
| Model Number | Q355B hot-rolled H-beam |
| Certification | SGS |
| Place of Origin | tianjin |
View Detail Information
Explore similar products
Length 1m Prefabricated Light Alkyd Painting Steel Building Structure
Eps Prefabricated Clean Room , Steel Structure Building
Custom Industrial Modular Multispan Steel Frame Structure Building
Multi Storey Metal Sheet 1m Length Prefabricated Steel Carport
Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Delivery Time | 5-10 week day |
| Yield strength | 355 MPa | Material grade | Q355B |
| Size range | 100*50*5*7-900*300*16*28mm | Surface treatment | Galvanized / Black |
| Theoretical weight | 10.5-37.1 kg/m | Processing technique | Hot rolled / Welded |
| Brand Name | GNEE | Model Number | Q355B hot-rolled H-beam |
| Certification | SGS | Place of Origin | tianjin |
Q355B hot-rolled H-beam steel is a high-strength (355 MPa yield), low-alloy structural material compliant with GB/T 1591-2018 standards, designed for superior load-bearing in building construction, bridges, and industrial equipment. It offers excellent weldability, durability, and seismic resistance due to its hot-rolled process and efficient cross-sectional shape.
The 355 MPa minimum yield strength ensures robust performance for load-bearing structures, including skyscrapers and industrial plants.
H-shaped profiles provide improved bending resistance, allowing for longer spans and lighter, more cost-effective structures compared to traditional beams.
Q355B is known for its reliability and toughness across varied temperatures, making it a reliable choice for critical engineering projects.
These beams are frequently treated with epoxy or polyurethane coatings to enhance anti-corrosion properties or galvanized for improved longevity in humid or outdoor environments.
| Product Name | Carbon Steel I/U/H Profiles Steel Beams Wide Flange Section For Construction |
| Shape | H & I Beam |
| Technique | Hot Rolled / Welded |
| Standard | ASTM / AS / BS / GB / JIS |
| Materials | Q235B, SS400, A-36, AS300B, S355J0, S450J0-T, S275JR |
| Size | 100*50*5*7-900*300*16*28mm |
| Surface Treatment | Galvanized / Black |
| Specification (inx1b/ft) | Height (mm) | Width (mm) | Web Thickness (mm) | Flange Thickness (mm) | Theoretical Weight (kg/m) |
|---|---|---|---|---|---|
| W6X7 | 147 | 100 | 3.3 | 4.2 | 10.5 |
| W6X8.5 | 148 | 100 | 4.3 | 4.9 | 13 |
| W6X9 | 150 | 100 | 4.3 | 5.5 | 13.5 |
| W6X12 | 153 | 102 | 5.8 | 7.1 | 18.0 |
| W6X15 | 152 | 152 | 5.8 | 6.6 | 22.5 |
| W6X20 | 157 | 153 | 6.6 | 9.3 | 29.8 |
| W6X25 | 162 | 154 | 8.1 | 11.6 | 37.1 |
| W8X8 | 198 | 99 | 3.3 | 4.2 | 12.0 |
| W8X9 | 199 | 100 | 3.8 | 4.7 | 13.5 |
| W8X10 | 200 | 100 | 4.3 | 5.2 | 15.0 |
| W8X13 | 203 | 102 | 5.8 | 6.5 | 19.3 |
| W8X15 | 206 | 102 | 6.2 | 8 | 22.5 |
| W8X18 | 207 | 133 | 5.8 | 8.4 | 26.6 |
| W8X21 | 210 | 134 | 6.4 | 10.2 | 31.3 |
The hot rolling process improves the performance of Q355B H-beams by heating the billet to a high temperature (approximately 1200°C) and rolling it into an H-shaped section. This process refines the grain structure, improving strength and ductility. Furthermore, hot rolling reduces internal stress, prevents warping, and ensures dimensional stability.
Hot rolling also creates a uniform microstructure, improving weldability and facilitating on-site welding. This method allows for precise control of flange and web thickness, ensuring consistent beam performance. Simultaneously, the hot rolling process is cost-effective and suitable for large-scale production, ensuring a wide supply of Q355B H-beams.
Q355B H-beams exhibit excellent corrosion resistance due to their alloy composition, performing well even in harsh environments. Their alloy composition contains elements such as manganese and niobium, which significantly improve corrosion resistance compared to ordinary carbon steel.
Their high strength ensures they can withstand extreme weather conditions in outdoor structures, such as blizzards or strong winds. Impact strength tests conducted at 20°C demonstrate that this steel is not prone to brittle fracture in cold climates. Furthermore, when combined with protective coatings such as paint or galvanizing, this steel effectively prevents rusting in humid or coastal areas. These properties enable its long-term reliable use in harsh environments.
Widely used in various building structures, bridges, vehicles, brackets, machinery, etc., for example:
All structural components, panels, bolts, and various accessories will be packaged in standard sea freight packaging and loaded into 40'HQ containers. All products will be loaded safely at the factory loading point by our skilled workers using cranes and forklifts. Goods will be protected from damage. We maintain good relationships with multiple shipping companies to ensure smooth transportation.
Steel possesses high strength and toughness, capable of withstanding large loads and exhibiting excellent seismic performance, ensuring the safety and stability of the installation.
Steel structure workshops have relatively short construction periods, improving construction progress and reducing construction costs.
Steel is a recyclable material, conforming to green building principles.
Steel structure workshops feature streamlined designs and diverse colors.
Steel structure surfaces are typically coated with fire-retardant paint, forming a protective film and improving the fire resistance limit of components.
Composite panels are used for roofs and walls.
Exceeding 50 years of reliable performance.
Q355 and S355 are not identical standards, but they are functionally equivalent for most structural applications. Both have a minimum yield strength of 355 MPa and similar tensile strength ranges. The main differences lie in standard specifications, chemical composition limits, and delivery conditions. Grade matching, such as Q355B vs S355JR, is essential for correct substitution.
Q355B is generally considered comparable to S355JR. Both grades require Charpy V-notch impact testing at +20°C and share similar mechanical property ranges. For projects requiring lower temperature toughness, Q355C, Q355D, or Q355E should be selected to match S355J0, S355J2, or S355NL respectively.
Yes, Q355 steel can replace S355 and ASTM A572 Grade 50 in many structural and fabrication applications. However, substitution should be approved by the project's design authority and supported by Mill Test Certificates confirming compliance with chemical composition, mechanical properties, and impact toughness requirements.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2008
Total Annual:
3000000-3500000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China. GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high quality steel ... Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China. GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high quality steel ...
Get in touch with us
Leave a Message, we will call you back quickly!