S355JRH Hot-Dip Galvanized High Strength Structural Steel Pipe – Outdoor Corrosion Grade
Product Overview
Hot-dip galvanized high strength structural steel pipe combines the load-bearing performance of S355 grade steel with the corrosion protection of full zinc coating. Manufactured with complete inside-outside galvanizing, it delivers long maintenance-free service life for outdoor and atmospheric exposed structural applications. This outdoor grade is the standard material for municipal engineering, solar mounting and exterior structural systems where corrosion resistance is required.
Why Choose CNB Galvanized Structural Pipe?
We galvanize structural pipes on automated hot-dip galvanizing lines with strict control over zinc coating mass, uniformity and adhesion. Every pipe undergoes coating thickness measurement and surface inspection to ensure complete corrosion protection. We offer pre-cut, pre-drilled and pre-fabricated options to deliver ready-to-install structural posts, reducing on-site labor and construction time.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Hot-Dip Galvanized High Strength Structural Pipe |
| Steel Grade | S355JRH / Q355B structural grade |
| Manufacturing Process | Hot rolled seamless / ERW welded |
| Zinc Coating Mass | Z80 – Z275g/m² (inside & outside) |
| Outer Diameter Range | 33.7mm – 323.9mm |
| Wall Thickness Range | 2.0mm – 12mm |
| Standard Lengths | 6m / 9m / 12m, custom cut |
| Surface Condition | Bright spangled galvanized |
| Applicable Standards | EN 10210, ASTM A500, galvanizing standards |
| Minimum Yield Strength | ≥355MPa |
| Expected Service Life | 15–20 years (normal outdoor) |
Core Advantages
- Full corrosion protection: Inside-outside galvanizing for complete structural protection.
- High strength performance: S355 grade strength for load-bearing outdoor structures.
- Long service life: 15–20 years maintenance-free in normal atmospheric environments.
- Installation ready: Pre-cut, pre-drilled and pre-fabricated options available.
- Municipal proven: Widely adopted in outdoor public works and infrastructure projects.
Applications
This galvanized high strength structural pipe is widely used for outdoor structural frames, solar mounting columns, municipal guardrails, transmission towers, fencing systems, sign supports and exterior structural components.
Get a Quotation
We supply galvanized structural steel pipes in various grades, sizes and zinc coating weights with custom fabrication options. Coating test reports and project-specific material recommendations are available upon request. Contact our outdoor structural team for a detailed quotation.
