Dn15,4 branch pipes, inner diameter 15mm, outer diameter 23mm and wall thickness 4 m;
DN20,6 branch pipes, with an inner diameter of 20mm, an outer diameter of 27mm and a wall thickness of 3.5mm；;
DN25, 1 inch pipe, with an inner diameter of 25mm, an outer diameter of 32mm and a wall thickness of 3.5mm；;
DNDN32, 1.75 inch pipe, with an inner diameter of 32mm, an outer diameter of 38mm and a wall thickness of 3 mm;
DN40, 1.5 inch pipe with an inner diameter of 40mm, an outer diameter of 48mm and a wall thickness of 4mm；;
DN65, 2.5-inch pipe, with an inner diameter of 65 mm, an outer diameter of 76 mm and a wall thickness of 4.5 mm;
DN80, a 3-inch pipe with an inner diameter of 80mm, an outer diameter of 89mm and a wall thickness of 4.5mm;
Dn 100, 5-inch pipe, inner diameter 100mm, outer diameter 108mm, seamless pipe, wall thickness 4 mm;
DN 1OO, 5-inch pipe, inner diameter 100mm, outer diameter 1 14mm, seamless pipe, wall thickness 7 mm;
DN 125, inner diameter 125mm, outer diameter 133mm, and wall thickness of 4mm；;
DN 150, inner diameter 150mm, outer diameter 165mm, and wall thickness of 8 mm;
DN200, internal diameter 200mm, external diameter 2 19mm and wall thickness 9.5mm；;
DN250, inner diameter 250mm, outer diameter 273mm, wall thickness11.5 mm.
Extended data:
galvanized pipe
As a water pipe, after several years of use, a large number of rust scales are produced in the pipe, and the yellow water flowing out not only pollutes the sanitary ware, but also is mixed with bacteria growing on the uneven inner wall. Due to rust, the content of heavy metals in water is too high, which seriously endangers human health (the state has issued regulations prohibiting it from being used as a drinking water pipeline).
References:
Galvanized pipe-Baidu Encyclopedia, water pipe-Baidu Encyclopedia.