BBN sale the nm500 steel used for bridges China manufacturer

GB711-2011 Chinese steel standard is used in the manufacture of steel plates with a NM500 steel used for bridges thickness of not more than 150mm for navigating ships, fishing boats and marine engineering structures in ocean, coastal and inland waterway areas. CCS/NV/GL550 steel is a structural steel for ships and marine engineering, divided into four quality grades A, D, E, F, namely AH550, DH550, EH550, FH550, H is high-strength building materials, and 550 is the lower yield strength.

Pakistan's iron and steel industry has suspended NM500 steel used for bridges production and operation since the outbreak, the dawn reported on April 8. Last month, Prime Minister Imran announced a rescue package for the steel industry. Recently, Pakistan's steel industry called for the resumption of production as soon as possible.

Chromium element (Cr element) can improve the strength and hardness of NM500 steel used for bridges, carbon steel in rolling state, reduce elongation and area reduction. When the chromium content is more than 15%, the strength and hardness will decrease, while the elongation and reduction of area will increase correspondingly. It is easy to obtain high surface processing quality for steel parts containing chromium after grinding. The main function of chromium element (Cr element) in quenched and tempered steel structure is to improve hardenability, so that the steel has better comprehensive mechanical properties after quenching and tempering.

The recent improvement in demand is also reflected in NM500 steel used for bridges social inventory. This year, the growth rate of NM500 steel used for bridges social inventory has slowed down compared with the same period last year, which indirectly reflects that the demand of NM500 steel used for bridges this year is better than that of last year. In addition, NM500 steel used for bridges production, which has set new highs again and again, has slowed down this month, with a slight decline. The decline of NM500 steel used for bridges production will also alleviate the relationship between supply and demand.