Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The steel pipe substrate undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant and tightly structured zinc-iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe substrate. Therefore, it has strong corrosion resistance.
1. Uniformity of the galvanized layer: The steel pipe sample shall not turn red (copper-plated color) after being immersed in the copper sulfate solution for 5 consecutive times.
2. Surface quality: The surface of the galvanized steel pipe shall have a complete galvanized layer, and there shall be no unplated black spots and bubbles. Small rough surfaces and local zinc nodules are allowed.
3. Weight of the galvanized layer: According to the requirements of the buyer, the galvanized steel pipe can be measured for the weight of the zinc layer, and the average value shall not be less than 480g/square meter.
| Product Name | Hot dip galvanized steel tube |
| Grade | Q235/Q355/10#/20#/45#/A36/A572/Gr.B etc. |
| Technique | Straight seam welding/Hot rolled seamless |
| Standard | ASTM,AISI,GB,DIN,JIS |
| Outside diameter | 6mm-430mm or Customizable |
| Thickness | 0.2mm-10mm or Customizable |
| Length | 6000mm or Customizable |
| Surface Treatment | Bright, brushed, frosted, plated, wood grain transfer printing etc. |
| MOQ | 1ton /Customized version with a minimum order of 3 tons |
| Package | Export sea worthy package + water proof paper + wooden pallets |
| Delivery | Normally 3-7 days after receiving 30% deposit |
| Payment | T/T, L/C, DP or Negotiable |
| Application | Stainless steel pipes are widely applied in: |
| 1: Architectural decoration: stairs, doors and windows, railings, etc |
| 2: Fluid transportation, such as oil, natural gas, water, coal gas, etc |
| 3: Mechanical parts and engineering structures |