National standard hot-dip galvanizing and other straight through. Accessories. Water pipe threaded joint inner teeth straight through external galvanized fittings 4 minutes -4 inches
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National standard hot-dip galvanizing and other straight through. Accessories. Water pipe threaded joint inner teeth straight through external galvanized fittings 4 minutes -4 inches
4 points 
6 points 
1 inch 
1.2 inch 
1.5 inch 
2 inch 
2.5 inch 
3 inch 
4 inch 
4 points GB 
6 points GB 
1 inch national standard 
1.2 inch national standard 
1.5 inch national standard 
2 inch national standard 
2.5 inch national standard 
4 inch national standard