Mild steel equivalent grades of nm450 steel chemical composition

Our pipeline products adopt the national standard and the international standard API 5L, which can meet the needs of equivalent grades of NM450 steel pipelines working in different environments-on land in the open air and offshore deep water. Acid-resistant pipelines are produced for transporting highly acidic crude oil.

Focusing on the energy conservation and emission reduction objectives proposed by the municipal government, the company gives full play to the advantages of equivalent grades of NM450 steel circular economy formed after the comprehensive completion and operation, and vigorously promotes the implementation of energy conservation objectives. Through measures such as energy saving, technological innovation and equivalent grades of NM450 steel management strengthening, the energy saving target of annual reduction of added value energy consumption by 7%. It has made great contribution to energy saving of over completion.

Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized equivalent grades of NM450 steel are higher than that of annealed equivalent grades of NM450 steel, but the elimination of internal stress is not as good as annealing. The normalizing operation of equivalent grades of NM450 steel is simple, the cost is low, the productivity is high, and it is widely used in actual production.

Under the action of the roller and the plug, a cavity is formed in the blank, which is called the blank. Then send it to the automatic tube rolling machine to continue rolling. Finally, the wall thickness of the whole machine is equalized and the diameter is calibrated by the sizing machine to meet the specification requirements. It is an advanced method to produce equivalent grades of NM450 steel, hot-rolled seamless steel tube by continuous rolling mill.

To provide customers with the most satisfactory service and realize the win-win of economic and social benefits, our company promises to provide excellent equivalent grades of NM450 steel products in this bidding, and in line with the attitude of being serious and responsible to customers, before sending goods to users, the equivalent grades of NM450 steel technical personnel shall confirm that there is no fault in the equipment before sending goods to users, and then send goods and products to users, and formulate the following service terms.