Yuantai Derun Steel Pipe Group, founded in 2002 and headquartered in China’s largest steel pipe production base, offers galvanized steel square pipes as a turnkey solution for OEM buyers, distributors, and infrastructure developers. With 700M RMB registered capital and 65 production lines, we provide consistency, traceability, and scale.
China YTDR Wholesale Galvanized Steel Square Tube Factory
Galvanized Steel Square Pipe – Engineered for Global Supply Chains
Total Traceability from Melt to Shipment
Every galvanized steel square pipe carries a production code linked to our ERP system.
●Raw material certification: Steel coil certificates (EN 10204 Type 3.1) available per batch.
●In-line inspection: Eddy current and ultrasonic testing during ERW/HFW forming.
●Galvanizing batch records: Zinc bath temperature, immersion time, and coating weight logged.
●Final QC reports: Dimensional, mechanical, and visual inspection data shipped with order.
Certification Ready for Any Market
Yuantai Derun holds the most comprehensive certification portfolio in the industry.
●EU: CE 10219 (structural hollow sections) and CE 10210 (hot-finished).
●Marine: DNV and ABS for offshore applications.
●Japan: JIS G3466.
●US: LEED v4 compliance for green building materials.
●Management: ISO9001, ISO14001, OHSAS18001, 5A operational, 3A credit ratings.
We provide certificate packs in 8 languages for customs clearance and project audits.
Unmatched Dimensional and Alloy Range
No other galvanized steel square pipe supplier offers this breadth.
|
Parameter |
Range |
|
Square side |
10×10 mm – 1000×1000 mm |
|
Rectangular |
10×15 mm – 800×1200 mm |
|
Wall thickness |
0.5 mm – 60 mm |
|
Length |
2 m – 16 m (custom) |
|
Steel grades |
Q195, Q235, Q355, S235JR, S355JR, STK400, STK500 |
|
Zinc coating |
40 – 275 g/m² (pre-galv or post-galv) |
●ERW, HFW, LSAW, SSAW, seamless, hot/cold forming – all available.
●Circular equivalents: Ø10.3 mm – 2032 mm for hybrid orders.
Innovation Backed by Patents and R&D
We hold 100+ patents, including proprietary methods for:
1.Reducing internal weld seam height (for fluid/gas applications).
2.Enhancing zinc adhesion on high-strength grades (Q355+).
3.Straightening extra-long lengths (up to 16m without bowing).
Our R&D center collaborates with Tianjin University to advance eco-friendly pre-galvanizing chemistry, reducing acid use by 40% compared to traditional methods.
Join a Top 500 Global Steel Leader
Yuantai Derun is ranked among China’s Top 500 Private Enterprises and Top 500 Manufacturing Companies. We supply galvanized steel square pipes to Belt and Road infrastructure, European renewable energy parks, and North American agricultural projects.
Contact our export team for:
●Free samples (customer pays freight, refunded on first order)
●Custom mill test reports
●Exclusive territory agreements for distributors
Drive the green future of steel with Yuantai Derun – where galvanized steel square pipes meet uncompromising quality.
