Is there a difference between seamless steel pipe and ordinary steel pipe? The general requirements of A514 grade E high strength steel plate ordinary steel pipe are not so high, which are used in ordinary buildings or structures. According to the different materials and standards, seamless steel pipe will have different application environment. For example, seamless steel pipe for boiler requires pressure value. Seamless steel pipe for petroleum cracking also has its own corresponding national standard. Seamless steel pipe can be divided into fluid pipe, gas cylinder pipe, boiler pipe, oil pipe, automobile steel pipe, ship pipe, structural pipe, etc.
A514 grade E high strength steel plate, Q890D steel plate is quenched and tempered steel for high-strength structure, the implementation standard: GB/T 16270. In the Q890D steel grade, "Q" means yield, "890" means yield value, and "D" means grade level. The equivalent material of Q890D is EN S890Q steel. The size, shape, weight and allowable deviation of Q890D steel plate shall meet the requirements of GB/T709. Q890D steel plate delivery status (heat treatment): quenching and tempering.
As an experienced world class steel materials supplier and exporter, logistics and fast delivery is a crucial step to us. Our logistics department and shipping department take the responsiblity to allocate and transport steel materials from our mill and warehouse to customer port or designated destination. The cooperation of the two departemts are excellent and that powerfully support our fast delivery, and strive for shorter time for customers to receive steel materials.
The addition of Ca element in steel such as A514 grade E high strength steel plate can refine grain size, partly desulphurize and change the composition, quantity and morphology of non-metallic inclusions. It is similar to that of adding rare earth in steel. It can improve the corrosion resistance, wear resistance, high temperature and low temperature resistance of steel, improve the impact toughness, fatigue strength, plasticity and welding performance of the steel, and increase the cold heading, shock resistance, hardness and contact endurance strength of the steel.
