Leave Your Message

ASTM A53 Gr. B Factory Price 600X600mm ERW Carbon Oversized Steel Pipe

Our oversized Rectangular Hollow Sections (RHS) are cold-formed from high-strength carbon steel strips, utilizing the Electric Resistance Welding (ERW) process.

  • Brand: YTDR or OEM/ODM
  • OD(Outer diameter): 300mm-1200mm /other Customized Sizes
  • Wall Thickness: 8mm to 50mm
  • Length: 12 m(39.37ft), 6m(19.69ft), 11.8M(38.71ft),5.8M(19.03ft)
  • Surface Treatment: Hot Rolled
  • Oiled or Non-oiled: Slightly Oiled
  • Standard: S420GD /S350GD/ S450GD/ S550GD /G550 /Q235
  • Standard: Q235 Q195
  • Delivery Times: 7-15 days
  • Delivery Port: Xingang Tianjin Port,China
  • Payment Terms: L/C,T/T
 Product Description
YTDR

Our product is a high-strength, oversized rectangular hollow section (RHS) manufactured for heavy-duty structural applications. It is formed from premium carbon steel strips using the Electric Resistance Welding (ERW) process, which creates a strong, seamless weld with consistent wall thickness and superior dimensional accuracy. The pipe is finished with a protective black paint coating, offering basic corrosion resistance and a uniform industrial appearance suitable for both indoor and covered outdoor use.
Key Specifications:
● Common Sizes: Our flagship 600mm x 600mm profile is available, alongside a wide range of other rectangular and square hollow sections. We specialize in custom widths, heights (up to 600mm and beyond), and wall thicknesses.
● Wall Thickness: Schedule 20 to Sch80 (e.g., 6mm to 25mm and above), catering to both structural and heavy-duty applications.
● Material Standards: Conforms to ASTM A500 Grade B, ASTM A53 Grade B, and EN 10219 S355J0H.

屏幕快照 2025-11-05 的 11

Key Performance:
● Yield Strength: Min. 250 MPa (ASTM A53 Gr. B) / 290 MPa (ASTM A500 Gr. B)
● Tensile Strength: 415 MPa (ASTM A53 Gr. B) / 400 MPa (ASTM A500 Gr. B)
● Excellent Mechanical Strength and Structural Stability

图片1

Why Choose YTDR Structural Hollow Sections?
YTDR

● Proven Expertise & Scale: With over 15 years of dedicated steel pipe manufacturing, YTDR possesses the specialized expertise and machinery to produce oversized and custom profiles reliably. Our facility serves 500+ global clients, including major construction and engineering firms.
● Advanced Production & Quality Control: We implement a rigorous 3-stage quality inspection (material, in-process, final), resulting in a documented product defect rate of less than 0.5%. Our focus on weld integrity and dimensional accuracy ensures you receive a product that fits and performs as specified.
● Direct Factory Cost-Efficiency: By manufacturing directly and selling at a factory price, we offer a cost-saving of 10-15% compared to traders and intermediaries. This provides exceptional value, especially for large-volume projects.
● Unmatched Service & Flexibility: We understand the need for speed and customization in the industry. We offer tailored sizing and swift logistics, with a commitment to providing quotations within 24 hours. Our technical support team assists with project specifications from start to finish.

图片2

Service Life
YTDR

The service life of our black steel pipe is dependent on the operating environment, as the black paint is a cosmetic and basic protective layer. For long-term outdoor exposure without maintenance, we recommend additional protective coatings or galvanizing.
● Dry Indoor Environments: 20+ years with minimal risk of corrosion.
● Humid Indoor / Covered Outdoor Environments: 5-10 years before significant surface rust may appear, depending on humidity levels.
● Exposed Outdoor Environments: 2-5 years before maintenance painting is recommended to prevent corrosion.
Real-World Case: A series of internal mezzanine floor structures supplied to a logistics warehouse in Southeast Asia in 2015 remain in excellent condition with no signs of structural degradation, demonstrating the product's long-term reliability in controlled environments.

图片3

Maintenance
Maintenance for black steel pipe is straightforward, focusing on monitoring and preserving the protective coating.
● Routine Cleaning: For indoor use, simple dusting or wiping with a dry cloth is sufficient. For outdoor applications, an annual inspection and cleaning with water to remove dirt and contaminants is advised.
● Localized Repair: If the black paint is scratched or damaged, spot maintenance is easy. Light sanding to remove rust, followed by the application of a primer and black paint, will restore protection. This is significantly easier and cheaper than dealing with an uncoated pipe.
● Inspection Frequency: We recommend a visual inspection every 12 months for pipes in exposed environments. This proactive approach is far more efficient than dealing with the extensive corrosion that would occur on bare steel, reducing long-term maintenance efforts by over 50%.

图片4

Application Channels
YTDR

● Construction & Infrastructure: Ideal for structural columns, beams, and supports in industrial plants, commercial buildings, and temporary structures. The large 600x600mm size is perfect for carrying heavy loads over long spans. Its rectangular shape allows for easy bolting and attachment of panels. (Used in the support framework for a large domestic industrial plant).
● Mechanical Manufacturing & Heavy Equipment: Used for constructing robust machine bases, conveyor frames, and heavy-duty jigs and fixtures. The flat surfaces facilitate the easy mounting and alignment of mechanical components.
● Transportation & Logistics: Applied in the fabrication of trailer chassis, container supports, and warehouse storage system frames, where high strength and rigidity are paramount.
● Furniture & Interior Design: For industrial-style staircases, shelving units, and decorative interior features, the black finish offers a modern, clean aesthetic straight from the factory.
● Agricultural Systems: Suitable for internal support structures in barns, greenhouse frames (if maintained), and equipment framing, providing a cost-effective structural solution.

图片5

 Steel Grade Customization
YTDR

● 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.

20
 Free Samples
YTDR

At Yuantai Derun, we take pride in delivering premium square steel pipes. To let you experience our excellence firsthand, we’re pleased to provide free samples (up to 20 cm in length), shipped directly to you via express air freight—with only the shipping cost on your end.

Why hesitate? Put our materials to the test and discover why Yuantai Derun stands out in quality and reliability. Request your sample today!

 Testing
YTDR

Yuantai Derun Square Steel Pipes – Quality Assured at Every Stage
From raw material sourcing to finished products, Yuantai Derun implements rigorous quality control at every step. We exclusively use traceable raw materials from reputable manufacturers, subjecting them to comprehensive inspections, including but not limited to:
●Dimensional & Visual Checks (appearance, size, straightness)
●Mechanical Testing (impact resistance, yield & tensile strength, hardness)
●Material Analysis (chemical composition, metallographic examination)
●Non-Destructive & Corrosion Testing (UT inspection, salt spray testing)
Contact us today to discuss your specific testing requirements—we ensure precision and reliability in every pipe.

图片19(1)

Product Description

Brand

Yuantai Derun Steel Pipe Manufacturing Group

Specification

300mm-1200mm

Wall Thickness

8mm-50mm

Length

1m, 1.5m, 2m, 3m, 4m, 5m, 6m

0.6m, 0.9m, 1.2m, 1.5m, 1.8m, 2.0m, 2.4m

 

Tolerance

±5%, ±10% as required

Shape

Square

 

Standards

ASTM A500/A501,EN10219,EN10210

Grade

10#, 20#, 45#, 16Mn, Q235, Q345, Q195

Surface Treatment

Hot Roll

Oil/Non Oil

Slightly Oil

Certificate

CE,LEED,BV,PHD&EPD,BC1,EN10210/10219,

ISO9000/14001/45001,DNV,ABS,JIS G3466

Application

1. Construction Field

2. Manufacturing Field

3. Transportation Field

4. Furniture & Agriculture Field

MOQ

2-5 Tons or No minimum order

Delivery Time

7-15 days

Samples

Free Samples    Get Free Sample Now!