| The different betweet hot dip galvanized and pre galvanized steel pipe | |
| Zinc coating | pre galvanized 60-120g/m2 & hot dip galvanzied 120-500g/m2 |
| Surface | pre-galvanized steel pipe is more bright then hot dip galvanized |
| Thickness | pre-galvanized:1/2”-6” & hot dip galvanized 1/2”-16” |
| Price & Delivery Time | hot dip galvanized is higher and longer than pre-galvanized steel pipe |
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