Hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in the tank of ammonium chloride or zinc chloride aqueous solution or mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the in the hot dip bath. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe substrate undergoes complex physical and chemical reactions with the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel tube substrate. Therefore, it has strong corrosion resistance.
| Product name | hot dipped galvanized round steel pipe |
| Technique | Longitudinal Electronic Resistance Welding (ERW) High Frequence Welding (HFW) |
| Material Quality | Steel Grade | Q195 Q215 Q235 Q345,etc. |
| Material Type | Available in cold rolled and hot rolled |
| Size | W.T. | 1.0mm-20.0mm |
| Diameter | 21.3mm-273mm |
| Length | 1m-12m or as your requirement |
| Surface | Galvanized, 3PE, painting, coating oil, steel stamp, etc. |
| Ends | Plain ends, cutting, threaded with coupling, beveled, flange, etc. |
| Inspection | With Chemical Composition and Mechanical Properties Testing; Hydrostatic Test, Dimensional and Visual Inspection, With Nondestructive Inspection |
| Certification | BV, ISO, IAF or as per customer. |
| Application | construction pipe, structure pipe, Greenhouse pipe, Building material tube, Furniture tube, etc |
| Trade Terms | FOB, CFR, CIF, EXW. |
| Payment Terms | T/T,L/C at sight 30%T/T in advance,balance 70% should be paid after receiving the copy of BL. |
| Loading Port | Qingdao/Tianjin/Shanghai Port |
