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In Stock: Q355B & Q235B Heavy Wall Welded Steel Pipe for Structural Use
Looking for premium-grade welded steel pipe for critical structural projects? YTDR Group proudly offers extensive in-stock inventory of Q355B (high-strength low-alloy steel) and Q235B (carbon structural steel) heavy wall welded pipes—delivering industry-leading performance where stability, durability and safety matter most.
Specifications & Compliance:
Available in a wide range of diameters and wall thicknesses, our pipes comply with major international standards (GB/T, ASTM, etc.) and can be supplied with complete mill test certificates (MTC).
Why Industry Leaders Trust YTDR？
With over 3,000 successful structural projects across 27 countries, YTDR has built a reputation for delivering materials that meet the most stringent safety requirements while optimizing project timelines and budgets.
The YTDR Structural Advantage
1.Immediate Availability: We maintain substantial buffer inventory across multiple specifications to ensure 24-72 hour shipment readiness
2.Full-Pipeline Quality Assurance: From raw material sourcing to final ultrasonic testing, our integrated production system ensures batch-to-batch consistency
3.Technical Engineering Support: Our metallurgical experts provide application-specific guidance, including material selection and welding parameter recommendations
4.Customization Ready: Available in OD 219mm-1625mm, wall thickness 6mm-80mm, with options for beveling, coating, and custom cutting
5.Certified Compliance: All products come with complete Mill Test Certificates (MTC) meeting GB/T, ASTM, EN, JIS and project-specific standards
Uncompromising Material Excellence
Each pipe is manufactured using controlled rolling and precision welding
techniques that guarantee:
● High Strength-to-Weight Ratio for optimized structural efficiency
● Enhanced Weldability & Ductility for seamless on-site fabrication
● Superior Impact Resistance in challenging environmental conditions
● Consistent Wall Thickness & Dimensional Accuracy (±0.5% tolerance)
Service life depends on material, environment, load, and protection. With proper measures:
● Standard structures: 50+ years
● Industrial settings: 25–50 years
● Harsh conditions: 15–30+ years (requires special grades/coatings)
YTDR ensures longevity through:
● Premium Q355B/Q235B materials with certified quality
● Technical support for grade/coating selection
● Custom solutions (weathering steel available)
Choose YTDR for durable, cost-effective structural solutions built to last. Contact us for project-specific lifespan assessment.
Designed for Demanding Structural Applications
Our pipes are engineered to excel under pressure in multiple demanding environments:
● Commercial & Industrial Construction: Building frames, support columns, crane rails
● Infrastructure Projects: Bridge components, tunnel reinforcements, offshore platforms
● Heavy Machinery & Equipment: Boiler frames, hydraulic cylinders, agricultural machinery chassis
● Public Works & Energy Sectors: Wind turbine towers, power plant structures, transportation hubsDesigned for Demanding Structural Applications
Our pipes are engineered to excel under pressure in multiple demanding environments:
● Commercial & Industrial Construction: Building frames, support columns, crane rails
● Infrastructure Projects: Bridge components, tunnel reinforcements, offshore platforms
● Heavy Machinery & Equipment: Boiler frames, hydraulic cylinders, agricultural machinery chassis
● Public Works & Energy Sectors: Wind turbine towers, power plant structures, transportation hubs
● American Standard (ASTM): Gr. A, B, C, etc.
● European Standard (EN): S235, S275, S355, S420, S460, etc.
● Japanese Standard (JIS): SS400, STKR400, STKR490, etc.
● Chinese Standard (GB): Q195, Q235, Q355, etc.
● Canadian Standard (CSA): 300W, 350W, etc.
Contact our structural specialists today for:
● Immediate stock verification for your specifications
● Competitive project-based pricing
● Comprehensive technical documentation
● Logistics coordination support
Yuantai Derun Square Steel Pipes – Quality Assured at Every Stage
Yuantai Derun Steel Pipes are built with an uncompromising commitment to quality, reinforced through systematic control from raw material to final delivery. We source only certified and fully traceable steel, which undergoes multiple verification phases—from visual and dimensional accuracy to mechanical, chemical, and corrosion performance testing. Each pipe is guaranteed to meet your structural and durability expectations. Tell us your requirements, and we’ll deliver pipes you can trust.
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Product Description |
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Brand |
Yuantai Derun Steel Pipe Manufacturing Group |
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Brand |
Yuantai Derun Steel Pipe Manufacturing Group |
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Specification |
300mm-1200mm |
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Wall Thickness |
8mm-50mm |
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Length |
1m, 1.5m, 2m, 3m, 4m, 5m, 6m 0.6m, 0.9m, 1.2m, 1.5m, 1.8m, 2.0m, 2.4m
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Tolerance |
±5%, ±10% as required |
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Shape |
Square
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Standards |
ASTM A500/A501,EN10219,EN10210 |
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Grade |
10#, 20#, 45#, 16Mn, Q235, Q345, Q195 |
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Surface Treatment |
Hot Roll |
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Oil/Non Oil |
Slightly Oil |
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Certificate |
CE,LEED,BV,PHD&EPD,BC1,EN10210/10219, ISO9000/14001/45001,DNV,ABS,JIS G3466 |
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Application |
1. Construction Field 2. Manufacturing Field 3. Transportation Field 4. Furniture & Agriculture Field |
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MOQ |
2-5 Tons or No minimum order |
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Delivery Time |
7-15 days |
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Samples |
Free Samples Get Free Sample Now! |