1500tons Q355GNH cold rolled weathering steel coil exported to New Delhi

From the ship plate to our building materials, steel plate is needed everywhere in our daily life. The quality of Q355GNH cold rolled weathering steel coil, steel plate is also related to each of us. Therefore, the quality of steel plate should be strictly controlled from manufacturer to the user. Once there are quality problems with steel plate, it is very easy to generate major events endangering people's lives.

A small amount of Nb is sufficient to obtain excellent comprehensive properties of Q355GNH cold rolled weathering steel coil etc. steel material, because at low Nb concentration, the yield strength of steel material increases faster and is proportional to the concentration, but when the Nb content is greater than 0.03%, the strengthening effect begins to decrease. Studies have shown that when the Nb content is greater than 0.06%, excess Nb will no longer strengthen the steel material.

The hot rolling method is to heat the Q355GNH cold rolled weathering steel coil steel material to about 1000 ℃ ~ 1250 ℃ and use the rolling mill to roll it. The traditional hot rolling process is generally divided into the following two steps: the first step is to use the primary rolling mill or billet rolling mill to roll the ingot, billet or continuous casting billet into a certain shape and size of billet. This kind of Q355GNH cold rolled weathering steel coil rolling process is usually called semi-finished product production, also called blank production.

It is very important for a company to have a sound after-sales service system, which better guarantees the interests of customers and increases the reliability of the company's products in the hearts of customers. Our company has a dedicated after-sales service team and good after-sales service reputation, and has been recognized by customers over the past decades. Whenever there is problem about our Q355GNH cold rolled weathering steel coil steel materials during application on the user site, our after-sales service persons will assist to find solutions at the first time.