High Strength 10-2000mm Diameter Round Pipe S350GD+Z Galvanized Steel Pipe
- Outer Diameter:10mm to 2000mm
- Wall Thickness:0.5mm to 300mm
- Length:10-16000mm
- Overview
- Recommended Products

Product Pictures

Product Induction
S350GD+Z Galvanized Steel Tubing (including round tubes, square and rectangular tubes, and special-shaped welded tubes) is a high-strength structural steel tubing based on European Standard EN 10346. It offers advantages of high strength, high corrosion resistance, high formability, and excellent weldability. The total galvanized coating weight is 275 g/m² on both sides. It can be applied in construction, electromechanical, energy, agriculture, and animal husbandry sectors.
Specification
| Product Name | High Strength 10-2000mm Diameter Round Pipe S350GD+Z Galvanized Steel Pipe |
| Technique | Hot Rolled(common in practical applications, with higher strength and thickness range) |
| Grade | S350GD+Z |
| Grade Can be Supplied |
Structural pipe,Liquid pipe,High pressure boiler tube,Pipeline Alloy pipe,Structure pipe,Vehicle pipe,Pipe for pipe mould Pipe for hydraulic prop,Pipe for fluid transmission all types seamless pipes with all grades can be produced. |
| Outer Diameters | 10mm to 2000mm |
| Wall Thickness | 0.5mm to 300mm |
| Length | 10-16000mm |
Galvanized Coating Weight |
Z275-Z600 |
| Certificate | ISO9001/ROHS |
| Processing Service | Welding, Punching, Cutting, Bending |
| Application | Photovoltaic brackets, high-speed railway cable trays, modular building columns |
S350GD+Z Chemical Composition
| Grade | C | Si | Mn | P | S % | Zn |
| S350GD+Z | 0.06-0.2 | 0.2-0.6 | 1.1.7 | 0.045 | 0.045 | 275g/m2-600g/m2 |
S350GD+Z Mechanical Properties
| Grade | tensile strength(MPa) | yield strength(MPa) | Elongation% |
| S350GD+Z | 420–510 MPa | ≥ 350 MPa | ≥ 16 % |
S350GD+Z Galvanized Pipe Applications
Construction: Roof/wall purlins, large-span truss columns, scaffolding, photovoltaic mounting systems
Electromechanical: Automotive chassis longitudinal beams, vehicle body frames, air conditioning brackets, elevator guide rails
Energy: Wind turbine tower internal platforms, substation fencing, coastal photovoltaic spiral piles
Agriculture & Livestock: Greenhouse columns, livestock and poultry shed frames, with superior ammonia corrosion resistance compared to standard galvanized pipes.
Common Specification List for Galvanized Pipes
| outer diameter | wall thickness | outer diameter | wall thickness | outer diameter | wall thickness |
| 10mm | 2mm | 13.5mm | 2.75mm | 17.0mm | 3.5mm |
| 21.3mm | 3.15mm | 26.8mm | 3.4mm | 33.5mm | 4.25mm |
| 42.3mm | 5.15mm | 48.0mm | 4.00mm | 60.0mm | 5.00mm |
| 75.5mm | 5.25mm | 88.5mm | 4.25mm | 114.0mm | 7.00mm |
| 140.0mm | 7.5mm | 165.0mm | 7.5mm |
Other Pipe Products
We can also do other all kinds of pipe products such as seamless steel pipe,weld pipe,spiral steel pipe,square pipes,square rectangular steel pipes,stainless steel pipe,shape-special pipe.
Each type of steel pipe is available in ample stock, can be cut to length, and supports customization.
seamless steel pipe:
outer diameters:od6mm-od2500mm wall thickness:1mm to 200mm length:10mm-25000mm
welded pipes:
outer diameters:10mm to 3000mm wall thickness:0.5mm to 400mm length:10mm to 25000mm
spiral pipes:
outer diameter:325mm to 3000mm wall thickness:10mm to 200mm length:10-25000mm
square pipes:
size:10*10-2000*2000mm wall thickness:0.5mm-300mm length:10mm to 25000mm
rectangular steel pipes:
size:10*10-2000*2000mm wall thickness:0.5mm-300mm length:10mm to 16000mm
stainless steel pipe:
size:10*10-2000*2000mm wall thickness:0.5mm-300mm length:10mm to 16000mm

FAQ
Q: What is the yield strength?
A: Theoretical ≥ 350 MPa, actual delivery 370–400 MPa.
Q: Can it be processed for bending?
A: Yes. Under 180° cold bending, the outer surface shows no visible cracks, and there is essentially no risk of springback cracking.
Q: What are the differences between S350GD+Z galvanized pipes and S280GD+Z?
A: The yield strength is 70 MPa higher, and the tensile strength is approximately 60 MPa higher. It is more suitable for large-span, high-load photovoltaic mounting structures. Even with a 15% reduction in wall thickness, equivalent strength is maintained.
Q: What is the zinc coating thickness?
A: The default is 275 g/m² (total for both sides). Actual orders can reach up to 350 g/m², depending entirely on customer requirements.
Q: Can 350GD+Z Galvanized Pipe be welded?
A: It can be welded at room temperature. This material is low-carbon, low-alloy steel and can be welded using CO₂ welding at room temperature.
Q: How can I get your quotation as soon as possible?
A:Please contact:
Email:[email protected]
WeChat/WhatsApp/Mobile: + 86 13512028034