What is the difference between 18# GB and GB?
18# GB GB, the weight of each meter is 24.1, and then multiplied by the number of meters, multiplied by the tons sold to you on the priceBecause the non standard is not up to 24.1 so you can ask your supplier to the actual weigh
The national standard refers to the approval issued by the national standardization administrative body, which is of great significance to the national economic and Technological Development and is unified throughout the country.
The difference between 18# standard and non-standard I-beam is with the theory of similar size, such as the angle of 50*50*5, GB thickness is very close to 5, such as the thickness of Maanshan Iron and steel, is only reached 4.5, even more thin, so the difference, GB, non-standard thickness is not the same, not the same as the weight, when purchasing can meet the design requirements can choose the appropriate standard, this will save money, because the non-standard, much cheaper than gb.
The national standards are unified technical requirements throughout the country, and shall be formulated by the administrative department for standardization under the State Council to coordinate the project division of labor, organize the formulation (including revision), and uniformly examine and approve, number and issue.Nonstandard is the product that does not produce according to national standard.
