40x40x3mm galvanized square steel tube
| Product name | sqaure and rectangualr steel pipe galvanized |
| Pipe end | plain end |
| Pipe Length | 3 meters-12 meters |
| Size | SHS: 10*10-400*400mm, RHS: 20*10-400*300mm |
| Materials | Q195, Q235, Q235B, Q345,St37,St37-2, St52, SS400, STK500, ASTM A53, S235JR |
| Standard | ASTM A53, JIS G 3466, BS EN 10219, ASTM A500, ASTM A513, ASTM A36 |
| Surface | galvanized (pre galvanized or hot dipped galvanized) |
| Zinc Coating | 60g/m2-600g/m2 |
| Payment term | T/T, L/C, Western Union, Cash, etc |
| Applications | structural tubes, decorative tube, greenhouse pipes, fence post, |
| Certificate | ISO9001, SGS, TUV, BV |
♦ What is the difference between hot dip galvanized pipe and pre-galvanized pipe
Both pre-galvanized pipes and galvanized pipes can be welded, but pre-galvanized pipe are processed with galvanized steel strip for one-time forming, and the anti-corrosion time is not as long as that of hot-dip galvanizing, while hot-dip galvanized pipe is processed from black pipes,then go to galvanizing. After a high temperature of 1000 degrees, generally thin wall thicknesses are not hot-dip galvanized.
There is also the difference in quality and classification. Galvanized pipes can be processed into hot and cold galvanized pipes, while pre-galvanized pipe cannot be made into hot-dip galvanized pipes, because their wall thickness is relatively thin, so compared with hot-dip galvanized pipes The price of zinc pipe is higher than that of pre-galvanized pipe, the galvanized layer is thicker, and the storage time is longer.
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