Dimensions of steel tubes: light          
Nominal size (DN) Designation of thread Outside diameter(mm) Thickness(mm) Mass of black tube (kg/m)
max  min Plain end  Screwed and socketed
8  1/4 13.6 13.2 1.8 0.515 0.519
10  3/8 17.1 16.7 1.8 0.670 0.676
15  1/2 21.4 21.0 2 0.947 0.956
20  3/4 26.9 26.4 2.3 1.38 1.39
25 1    33.8 33.2 2.6 1.98 2.00
32 1 1/4 42.5 41.9 2.6 2.54 2.57
40 1 1/2 48.4 47.8 2.9 3.23 3.27
50 2    60.2 59.6 2.9 4.08 4.15
65 2 1/2 76.0 75.2 3.2 5.71 5.83
80 3    88.7 87.9 3.2 6.72 6.89
100 4    113.9 113.0 3.6 9.75 10.0
Chemical Composition(ladle) Mechanical Properties at room temperature
C (max) Mn (max) P (max) S (max) Tensile strength,Rm Yield strength,Re(min) Elongation on gauge length  Lo=5.65√SoA(min)
0.20% 1.20% 0.045% 0.045% 320 to 460 N/mm2 195 N/mm2 20%

1.We have a series of practically complete pipe specifications for your choice. And in view of some special specifications, it is available for any customization. Our moulds are designed for specific specifications with high technology. For example, we can make elliptical tube, bread pipe as well as quincunx pipe accessible. Other complicated shape is also available. So if your requirements or projects are special, you can place an order in certain quantities with us without hesitation. Our moulds can control errors in minimum range to tally with your standards. Certainly, our moulds will have an increase in the near future, about 2 years. 

2.Following the current diversified consumption trend in the steel market, we always adhere to the dedication to meet the customized needs of different customers from different regions in the world. It is believed that you can always find your desired products here. Our small steel pipes can be inserted in large scale pipes, besides, our steel pipes are equipped with other accessories as it seeks to prevent wires from scratching when threading. In addition to flattening inside or outside weld joints, we can also ensure the surface is glossy with solid structure.

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