Pipe size
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The pipe size is 76*8, and the material is 20G. What standard does this correspond to? What is the equivalent DN value? Is the thickness 8 mm, and is it made of 20# steel?
There are many specifications and size standards involved; for example, according to GB17395 2008, the 76X8 size belongs to the first series, and if one wants a size that is closer to that, it corresponds to DN 65, which is 2.5 inches in diameter. It’s best not to mention such specifications, as it can lead to discrepancies. It is best to express it as outer diameter plus wall thickness.
Seamless steel pipes are subject to numerous standards; in China, steel grade 20 is included in various lists, and each standard pertains to seamless steel pipes made from grade 20 steel. The requirements for chemical elements and mechanical properties, as well as the inspection items, are all different.
The national standard uses outer diameter X wall thickness, while the American standard uses pipe diameter X outer diameter of the pipe
20G is the boiler steel specified in GB/T 5310-2017 \"Seamless Steel Tubes for High-Pressure Boilers\"; its grade is 20G, not 20#. It can be understood as 20# steel used for high-pressure boilers. A thickness of 8mm also provides good pressure resistance. D76 is generally DN65. However, in the thermal power or boiler industry, D76 might also be DN50.
It has nothing to do with standards; it’s the B series of DN65 with an outer diameter of 76 mm. For 20G, material 20# is used after normalizing, and the required value for V is 199. Direct sales from manufacturer 0317 at price 9871