ASTM A500 33.4mm Pre-Galvanized ERW Welded Hollow Section Steel Pipes

Key Advantages & YTDR's Exclusive Value:
1.Exceptional Strength & Durability:
● High Strength, Light Weight: Manufactured from ASTM A500 Grade B/C high-strength carbon steel, these pipes deliver excellent structural load-bearing capacity while enabling a lightweight design, helping to reduce overall structural weight and transportation costs.
● Long-Lasting Corrosion Resistance: Our proprietary "Uniform-Zinc Bonding" technology ensures a metallurgical bond between the zinc coating and the pipe body, creating a dense protective layer. Based on accelerated corrosion test data, the projected service life exceeds 20 years in standard atmospheric environments (e.g., C2-C3 categories), significantly outperforming standard black pipes and inferior galvanized products.
● Precise Geometry: The 33.4mm (approximately 1-inch) outer diameter, combined with precise wall thickness control, guarantees excellent roundness and straightness, facilitating easy installation and alignment on site.

2.Advanced Manufacturing Process:
● ERW Technology: Utilizing advanced Electric Resistance Welding (ERW) process results in strong, smooth, and nearly seamless welds, ensuring uniform strength throughout the pipe body and eliminating potential weak zones associated with conventional welding.
● Full-Process Quality Control: YTDR implements integrated production and monitoring from coil stock to finished packaging. Each batch is supported by complete material certification and mill test reports, ensuring traceable quality and guaranteed performance.

3.Ready-to-Install & Minimal Maintenance:
●Protected Upon Delivery: The pre-galvanized surface is smooth and uniform, providing superior corrosion resistance straight from production. Pipes can be directly welded and assembled upon arrival at the job site, eliminating the need for secondary processing like sandblasting or galvanizing, which drastically saves project time and initial costs.
●Low-Maintenance Operation: The product requires virtually no special maintenance during service. For use in harsh industrial or marine environments (e.g., C4-C5 categories), we recommend a simple surface cleaning and coating integrity check every 5-8 years. Minor scratches can be easily touched up with zinc-rich paint, making lifecycle maintenance costs exceptionally low.

● 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.

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!

Yuantai Derun square steel pipes also provide cutting, punching, and heat treatment services to meet customers' needs for gas cutting, punching, and thermal assistants. Contact us immediately and send us your processing requirements.

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.