Hot-dip galvanized steel pipe
    
        
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             Specification 
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             Outer diameter 
            (mm) 
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             Thickness 
            (mm) 
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             Hot-dip galvanized steel pipe 
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             1/2 
             | 
            
             20-21.3 
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             2.5-2.75 
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             3/4 
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             25-26.8 
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             2.5-2.75 
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            | 
             1 
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             31.5-33.5 
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             2.5-3.75 
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             1 1/4 
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             41-42.3 
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             2.5-3.75 
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            | 
             1 1/2 
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             46.5-48 
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             2.5-3.5 
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             2 
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             58.5-60 
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             2.5-3.5 
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             2 1/2 
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             74.5-75.5 
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             2.0-3.5 
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             3 
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             87-88.5 
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             2.3-4.0 
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             4 
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             113-114 
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             2.5-4.0 
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             5 
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             139-140 
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             2.75-4.5 
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             6 
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             165 
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             2.75-4.5 
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