Another type of iron beam available in the market is called INP. This product has a large distance between the wing and the girder, and at the same time, the wing is less thick. This product is designed in the shape of I and is mostly produced in Russia and China. Of course, Iran is also one of the countries producing INP tirah. From the characteristics of this product, we should mention the thinness of the wing at the beginning of the beam. The further you go towards the end of the product, the thicker the wing becomes. In fact, if you look at it from the beam head, you will notice a gentle slope in the thickness of the wings. Most of the products that enter the Iranian market from foreign countries are produced by countries such as Korea, Germany, Spain and Poland. However, INP beams enter the Iranian market from China and Russia. The products produced by China and Russia are very similar to IPE beams and therefore make it a little difficult for the customer to distinguish. Your building plan may be based on INP, but mistakenly use Chinese and Russian IPE products.
