Introduction of round steel tube
Round steel tube is a steel material that is open at both ends and has a hollow and concentric cross-section, and its length is larger than that of the periphery. The size of the round steel tube is expressed by the external dimensions (such as the outer
What is high quality structural steel
High quality structural steel must ensure chemical composition and mechanical properties at the same time. The grade is the ten thousand fraction (ωс**10000) that uses two digits to indicate the mass fraction of average carbon in the steel. For
What are the chemical performance indicators of steel?
The performance indicators of steel are generally divided into mechanical properties, chemical properties and process properties. Among them, the chemical properties of steel refer to the resistance of the steel to chemical or electrochemical reactions wh
How to distinguish weather resistant steel plate and ordinary steel plate?
When purchasing weather resistant steel plates and ordinary steel plates, what should be paid attention to, and what methods are there to distinguish the differences between weather resistant steel plates and ordinary steel plates?1. The small rust spots
Four characteristics of weather resistant steel after rusting
Weather resistant steel is a kind of corrosion-resistant steel. The more rust the better, what are the characteristics of weather resistant steel after it rusts?First, the photosensitive composition is stable, and the color thickness is uniform. At an out
Why should weather resistant steel landscape surface be treated with rust
Weather resistant steel landscape is strictly a kind of corrosive steel plate. In recent years, corroded steel plate has been mainly used to manufacture large-scale machinery and equipment, and is widely used in field steel such as containers, power plant
What are the advantages and disadvantages of high carbon steel
After proper heat treatment or cold drawing hardening, high carbon steel has high strength and hardness, high elastic limit and fatigue limit, and the cutting performance is acceptable, but the welding performance and cold plastic deformation ability are
Comparison of carbon steel and stainless steel
The nature of carbon steel and stainless steel is completely different. Building materials manufactured and produced by carbon steel and stainless steel will also have great differences in service performance and service life. So which carbon steel or sta
The role of various chemical elements in 15CrMo alloy steel pipe
15crmo alloy steel pipe is a kind of seamless steel pipe. Its performance is much higher than that of ordinary seamless steel pipe. Because this steel pipe contains more Cr, its high temperature resistance and corrosion resistance are not comparable to ot
The differences between high pressure boiler pipe and low and medium pressure boiler pipe
1. Different working environmentLow and medium pressure boiler pipe: the working pressure is generally not more than 5.88Mpa, and the working temperature is below 450℃;High-pressure boiler pipe: the working pressure is generally above 9.8Mpa, and the work
What are the differences between 20#seamless steel pipe and 20G seamless steel pipe
20#seamless steel pipe and 20G seamless steel pipe are both carbon structural steels with an average carbon content of 0.20%. There are big differences between 20#seamless steel pipe and 20G seamless steel pipe in terms of implementation standards, chemic
The differences between Q235B steel and 20#steel
1. Different chemical composition20#steel chemical composition: C: 0.17-0.23%; Si: 0.17-0.37%; Mn: 0.35-0.65%; Cr: ≤0.25%; Ni:≤0.30%; Cu: ≤0.25%.Q235B steel chemical composition: C:≤0.20%; Si:≤0.35%; Mn:≤1.40%; P:
What is P265GH steel plate
P265GH steel plate belongs to European standard pressure vessel steel plate. P265GH steel plate is a non-alloy quality steel with high temperature function, fulfilling the specification: EN10028-2. P265GH steel plate has outstanding plasticity, resistance
What are the differences between 15crmo steel and 20crmo steel?
1. Difference in chemical composition:The chemical composition of 15crmo steel: C: 0.12-0.18 Si: 0.17-0.37 Mn: 0.40-0.70 Cr: 0.80-1.10 Mo: 0.40-0.55The chemical composition of 20crmo steel: C: 0.17-0.24 Si: 0.17-0.37 Mn: 0.40-0.70 Cr: 0.80-1.10 Mo: 0.15-0
Five characteristics of distinguishing good and bad steel
When buying steel, how do we distinguish between good and bad steel?1、Fake and inferior steel are prone to folding: folding is a variety of fold lines formed on the surface of the steel, and this defect often runs through the longitudinal direction of the