Q355 H Beams for Structural Projects | Reliable Supply & Competitive Pricing

Q355 H Beam – High-Strength Structural Steel for Heavy-Duty Projects

The Q355 H Beam is a high-strength structural steel widely used in industrial plants, logistic centers, heavy-duty platforms, and large commercial buildings. With 355 MPa minimum yield strength, Q355 provides significantly higher load-bearing capacity than Q235/A36—helping contractors reduce section weight while improving structural efficiency.

Produced according to GB/T 1591, our Q355 beams offer consistent chemistry, excellent weldability, and long-term reliability for demanding engineering applications.

Key Specifications of Q355 H Beam

• Available Grades: Q355A, Q355B, Q355C, Q355D, Q355E
• Standard: GB/T 11263
• Production: Hot-rolled
• Length: 6m / 9m / 12m / custom-cut
• Surface Options: Black, shot-blasted, primed, galvanized

Comprehensive Size & Theoretical Weight Table (Popular Sections)

Section (mm)	Height (H)	Width (B)	Web (t1)	Flange (t2)	Weight (kg/m)
H200×200×8×12	200	200	8	12	56.2
H250×250×9×14	250	250	9	14	81.6
H300×300×10×15	300	300	10	15	110
H350×350×12×19	350	350	12	19	137
H400×400×13×21	400	400	13	21	172

A full size list is available upon request together with the quotation and inventory sheet.

Chemical Composition (According to GB/T 1591)

Element	Q355B (%)	Q355C (%)	Q355D (%)	Q355E (%)
C	≤0.20	≤0.22	≤0.24	≤0.26
Si	≤0.50	≤0.50	≤0.50	≤0.50
Mn	0.90–1.50	1.0–1.6	1.10–1.70	1.20–1.80
P	≤0.035	≤0.035	≤0.035	≤0.035
S	≤0.035	≤0.035	≤0.035	≤0.035

Mechanical Properties (Standard Minimum Requirements – GB/T 1591)

Property	Q355B	Q355C	Q355D	Q355E
Yield Strength	≥355 MPa	≥355 MPa	≥355 MPa	≥355 MPa
Tensile Strength	490–630 MPa	490–630 MPa	490–630 MPa	490–630 MPa
Elongation	≥22%	≥22%	≥22%	≥22%

Processing Services

We provide full fabrication support tailored for contractor needs:

• Precision length cutting (Length tolerance: ±2 mm, or ±1 mm upon request)
• Drilling & punching for bolted connections
• Beveling for welding preparation
• Welding & component assembly
• Plate & beam fabrication packages
• Shot blasting & primer coating
• HDG galvanizing for corrosion protection

Applications of Q355 H Beams

Q355 is used extensively in mid-to-large-scale projects requiring high strength, durability, and efficient construction:

• Industrial plants & manufacturing halls
• High-rise structures and commercial complexes
• Machinery frames & heavy equipment platforms
• Warehouse & logistics centers
• Large-span roofing systems
• Infrastructure & structural reinforcement

For buyers comparing Q355 with other high-strength steels, our guide on common construction steels provides useful context—see Common Structural Steel Grades for Construction Projects (Q355, S355, A572, A709, Q460).

Why Choose Our Q355 H Beams?

1. Higher Strength for Modern Construction

Q355’s enhanced mechanical properties allow lighter designs with improved rigidity—ideal for high-rise, industrial, and machinery-support structures.

2. Stable Supply & Fast Dispatch

We maintain steady stock of popular Q355 H Beam sizes and ensure reliable delivery for time-sensitive projects worldwide.

3. Quality Assurance with Full Traceability

Full Mill Test Certificates (MTC) are provided for project orders or upon request.

4. Flexible Orders & Value-Added Processing

Custom cut lengths, drilling, welding, surface treatment, and fabrication services help reduce workload for contractors and fabricators.

Packaging & Transportation

All Q355 H Beams are packed with export-grade protection:

• Bundled with steel straps
• Waterproof wrapping
• Wooden supports for stability
• Seaworthy packaging
• Container or bulk shipment options

We supply globally across Asia, Middle East, Africa, Europe, and America.

Quality Assurance & Reliable Export Service

We work with certified mills and maintain long-term relationships with global buyers in construction, fabrication, and distribution. Each shipment undergoes:

• Dimensional and visual inspection
• Chemical & mechanical verification
• Packing reinforcement checks
• Pre-shipment photo documentation

Request A Quote Today

Get a detailed quotation, available sizes, and MTC within 24 hours.
We supply high-strength Q355 H Beams tailored for engineering contractors, fabricators, and distributors worldwide.
Contact us now for Q355 H Beam price and inventory.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment