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Tianjin Yuantai Derun 26.5m Long Welded Carbon Steel Pipes

Tianjin Yuantai Derun (YTDR) 26.5m Long Welded Carbon Steel Pipes are high-performance structural and transmission components manufactured through advanced submerged arc welding technology.

  • Brand: YTDR or OEM/ODM
  • OD(Outer diameter): 300mm-1200mm /other Customized Sizes
  • Wall Thickness: 8mm to 50mm
  • Length: 26.5m
  • Surface Treatment: Hot Rolled
  • Oiled or Non-oiled: Slightly Oiled
  • Standard: Q195 Q235 Q355
  • Delivery Times: 7-15 days
  • Delivery Port: Xingang Tianjin Port,China
  • Payment Terms: L/C,T/T
 Product Description
YTDR

Tianjin Yuantai Derun (YTDR) 26.5m Long Welded Carbon Steel Pipes are high-performance structural and transmission components manufactured through advanced submerged arc welding technology. The product is crafted from premium low-carbon steel grades Q235B and S355JR, featuring excellent weldability, mechanical strength, and corrosion resistance—key properties for demanding industrial applications.

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Standard specifications cover outer diameters from 114mm to 630mm, wall thicknesses ranging from 6mm to 25mm, and the fixed length of 26.5m ensures fewer joints and higher structural integrity for large-scale projects. YTDR supports fully customized solutions, including adjusted lengths, wall thicknesses, and surface treatments (such as hot-dip galvanizing) to meet specific project requirements.
The pipes comply with international standards EN 10217-7 and ASTM A500, with core performance indicators exceeding industry benchmarks: tensile strength of 410-550MPa, yield strength ≥235MPa, and zinc layer thickness ≥85μm for galvanized versions. Each pipe undergoes strict non-destructive testing, including ultrasonic flaw detection and hydrostatic pressure tests, to ensure zero defects in welds and structural integrity.

Why Choose YTDR Structural Hollow Sections?
YTDR

Brand Strength
With over 20 years of experience in steel pipe manufacturing, YTDR is a trusted supplier for global infrastructure and energy projects, boasting partnerships with 600+ clients across 50+ countries, including key players in the oil & gas and construction sectors.

Production Advantages
Equipped with 8 advanced welding production lines and intelligent rolling equipment, YTDR achieves an annual output of 500,000+ tons. The 26.5m long pipes are produced in one continuous process, reducing joint failures by 30% compared to spliced alternatives.

Quality Control
A 3-tier inspection system (raw material testing, in-process monitoring, final certification) ensures a defect rate of less than 0.01%. All products are traceable via unique batch codes, with full test reports provided for each shipment.

Cost Efficiency
Optimized production processes and bulk raw material sourcing enable YTDR to offer competitive pricing while reducing clients’ total lifecycle costs by 15-20%—thanks to the pipes’ long service life and low maintenance requirements.

Service Guarantee
YTDR provides 24-hour quotation responses, technical consulting, and customized solution design. The global logistics network ensures on-time delivery with an average lead time of 15-20 days, and a 5-year quality warranty covers manufacturing defects.

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Service Life
YTDR

YTDR’s 26.5m Long Welded Carbon Steel Pipes deliver exceptional durability across different environments:
● Rural/low-corrosion areas: 25+ years of service life
● Urban/industrial areas: 20-25 years
● Coastal/high-salt fog areas: 15-20 years (10+ years longer than ungalvanized carbon steel pipes)
The extended service life stems from two core advantages: the 85μm+ hot-dip galvanized layer forms a physical-chemical barrier against moisture and corrosive agents, while the Q235B/S355JR low-carbon steel base material ensures structural stability and resistance to fatigue. A Southeast Asian client’s 2012-installed oil transmission pipeline using YTDR’s pipes remains in stable operation without significant corrosion or structural degradation as of 2024.

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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%.

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Application Channels
YTDR

Our large-format hollow sections are versatile across industries:
● Construction & Infrastructure: Ideal for primary columns and beams in industrial warehouses, airport hangars, and multi-story car parks. Their high strength and corrosion resistance are perfect for exposed structural frameworks and bridge supports. Used in landmark projects like European metro station canopies.
● Heavy Machinery & Manufacturing: Serves as robust framework for large CNC machines, press foundations, and conveyor system gantries. The rectangular shape facilitates easy mounting of equipment panels.
● Transportation & Logistics: Used in port container handling equipment frames, heavy-duty trailer chassis, and freight terminal structures.
● Agricultural & Renewable Energy: Excellent for greenhouse mega-structures, grain silo supports, and the mounting frameworks for large-scale solar panel arrays.
● Furniture & Urban Design: For high-strength, minimalist public seating, decorative sculptural installations, and heavy-duty shelving systems in commercial spaces.

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 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.

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 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.

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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!