STK400-S235JR ERW Galvanized Steel Pipe

Description

STK400/S235JR ERW Galvanized Steel Pipe is manufactured from high-quality carbon structural steels complyingJIS G3444 STK400 (Japanese Standard)andEN 10025-2 S235JR (European Standard). Produced via advancedElectric Resistance Welding (ERW)technology and finishedhot-dip galvanizing, this pipe combines exceptional structural strength, excellent weldability, and long-lasting corrosion resistance, making it an ideal choice for construction, municipal infrastructure, machinery, energy transmission, and other industrial fields.

Core Advantages

Dual Standard Compliance, Reliable QualityMeets both JIS G3444 and EN 10025-2 standards. STK400 offers a minimum tensile strength400MPa, while S235JR provides a yield strength of ≥235MPa, ensuring stable mechanical properties and compatibility with global engineering specifications.

Precision ERW Welding, High EfficiencyERW technology delivers dense, uniform welds with high strength. The pipes feature tight dimensional tolerances, smooth inner and outer surfaces, and defect-free welds, ensuring excellent pressure resistance and fluid conveyance performance. The process is highly efficient and cost-effective.

Hot-Dip Galvanizing, Long-Term Corrosion ProtectionHot-dip galvanizing forms a metallurgically bonded zinc-iron alloy layer (50-150 μm), providing both physical barrier and sacrificial anode protection. In harsh environments (humid, acidic, alkaline, marine), the service life reaches20-50 years, significantly reducing maintenance and replacement costs.

Easy Fabrication, Strong AdaptabilityThe base material exhibits excellent weldability, formability, and machinability, allowing on-site cutting, welding, bending, and threading with ease. This simplifies installation and improves construction efficiency.

Application Scenarios

Construction Engineering: Steel structures, columns, beams, curtain wall frameworks, factory/stadium support structures.

Municipal Infrastructure: Gas pipelines, utility tunnels, cable protection conduits, road guardrails.

Machinery Manufacturing: Hydraulic system pipelines, conveying pipes, construction machinery components.

Energy Transmission: Oil/gas branch pipelines, wind turbine tower accessories, PV brackets, power cable conduits.

Agriculture & Industry: Greenhouse frames, warehouse shelves, chemical anti-corrosion pipelines, marine structural parts.

Quality Assurance

Strictly complies with international quality standards suchEN 10204 3.1, with original material certificates and inspection reports provided for every batch.

Full-process quality control from raw material sourcing, ERW welding, hot-dip galvanizing to final inspection ensures stable performance and high consistency.

Meets corrosion and environmental requirements includingNACE MR0175, ensuring safety, non-toxicity, and suitability for demanding working conditions.

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