exactly like European and Korean grades and the process conditions are based on the latest machines in this industry, which has a great impact on the quality of the product compared to domestic grades. and problems such as gel formation in the inner layer, lack of proper process in the five-layer pipe product and cracks caused by environmental stresses and weather (ESCR) as well as very high resistance to scratches and abrasion. This product has a very high resistance in Equivalent to creep up to 95 ° C