Welcome to Henan BBN Steel

  • zhengzhou
    henan ,China
  • Opening Time
    Mon - Sat: 08.00 to 18.00
Pageviews:

The company specializes in the research and development, production and sales of S355ML material equivalent standards seamless pipes, longitudinally welded pipes, large-diameter welded pipes, API 5L welded pipes, spiral welded pipes, and large-diameter thick-walled straight seam steel pipes. The company has S355ML material equivalent standards five production lines in three major production workshops: large-diameter longitudinally welded pipe production workshop,S355ML material equivalent standards rolled steel pipe production workshop, and thermally expanded steel pipe production workshop, with an annual production capacity of more than 100,000 tons.

Thin steel plate is a kind of steel plate material that is thinner in thickness. Generally, steel plate with thickness less than or equal to 4mm is called thin steel plate. As we all know, the steel products we usually see are also divided into different thicknesses. The strength, performance and scope of application of different thickness steel plates, S355ML material equivalent standards are also different. Today, we will talk about some related knowledge of thin steel plates, and take you to understand the characteristics and uses of thin steel plates.

The main difference between S355ML material equivalent standards, 45# steel plate and boiler steel plate is the difference of carbon content and impact toughness. 45# steel is a high-quality carbon structural steel, which is expressed by the number of ten thousand percent of the average carbon content. The 45# steel represents the high-quality carbon structural steel with 0.45 percent carbon content. The high-quality carbon structural steel contains less harmful impurity elements (S, P) and non-metallic inclusions, and has excellent plasticity, toughness and processing technology.

No. 45 steel is commonly used medium carbon quenched and tempered structural steel. The cold plasticity of No. 45 steel is generally better than S355ML material equivalent standards. Annealing and normalizing are better than quenching and tempering. No. 45 steel has higher strength and better machinability than Q345 steel. After proper heat treatment, it can obtain certain toughness, plasticity and wear resistance. No. 45 steel S355ML material equivalent standards is suitable for hydrogen welding and argon arc welding, but not suitable for gas welding. Preheating is required before welding, and stress relief annealing shall be conducted after welding.

What is the difference between Q345B steel and Q345A steel? S355ML material equivalent standards, Q345B steel and Q345A steel have slight difference in chemical composition: Q345A steel: C ≤ 0.20, Mn ≤ 1.7, Si ≤ 0.55, P ≤ 0.045, S ≤ 0.045, V 0.02 ~ 0.15; Q345B steel: C ≤ 0.20, Mn ≤ 1.7, Si ≤ 0.55, P ≤ 0.040, S ≤ 0.040, V 0.02 ~ 0.15. The difference between Q345B steel and Q345A steel is mainly in A and B behind the steel grade, Q345A steel grade is not subject to impact; Q345B steel grade needs 20 ℃ room temperature impact test.

The company is deeply supported and loved by customers with its unique business philosophy and business model. The company has always been adhering to the "credibility first, integrity-based, quality first" purpose, and sincerely serve new and old customers. Over the past twenty years, the company has won the trust of customers by relying on good service and good reputation. Our aftersales team’s main responsibility is to deal with quality feedback and complaints from Customer.

Previous:7mm thickness S420ML steel supplier for Next:S355M steel vs pressure vessel steel pla

Add Your Comments

First Name*

Tel*

Email*

Your Comments*