Do you want any logistics service, then call us: +86-371-86151827
We are world class steel materials supplier. We are engaed in providing raw steel materials such as a516 grade 70 welding steel plates / steel coils / steel sheets / steel pipes, deep processing and a series project design and solutions to clients. We guarantee to return goods for free for quality problem during its lifetime. Your satisfactory is our permanent pursue. We always welcome advise from clients to make self-improvement continously. And sincerely to build a516 grade 70 welding long-term cooperation with you.
BBN provides a wide range of seamless and welded pipes for oil and gas transportation. Welded pipes include ERW line pipe, SSAW line pipe and a516 grade 70 welding LSAW line pipe. Main application areas: onshore pipelines and offshore pipelines. The grades of steel pipes include PLS1 and PLS2.
Compared with 15Cr steel, 20Cr alloy has higher strength and hardenability. The critical hardening diameter in oil is 4-22mm, and the critical hardening diameter in water is 11-40mm, but the toughness is poor. This a516 grade 70 welding alloy steel a516 grade 70 welding still has a tendency to grow grains during carburization, and direct quenching at lower temperature has a greater impact on impact toughness, so secondary quenching is required after carburization to improve the toughness of the core of the part, and there is no temper brittleness.
The effect of Q345B alloy steel plate on the mechanical properties in the annealed state. The strengthening effect of alloying elements on steel in the quenched and tempered state, because it fully utilizes all four strengthening mechanisms. Martensite is formed during quenching, and carbide is precipitated during tempering, resulting in a strong second-phase strengthening, and at the same time greatly improving the toughness. Therefore, obtaining martensite and tempering it is an economical and effective comprehensive strengthening method for steel such as a516 grade 70 welding.
Alloy steel product a516 grade 70 welding size and stock (mm): 25*2200*9250, 25*2200*9200, 30*2200*10450, 35*2200*11050, 35*2000*11400, 75*2200*6100,,35*2200*9100, 50*2200*10000, 75*2200*6000, 35*2200*9300, 43*2100*12000, 70*2200*6500, 60*2200*10000, 60*2200*7450, 40*2200*11050, 43*2100*12000, 65*2200*6800, 90*2200*10000, 70*2200*10000, 110*2200*10000, 130*2200*10000, 150*2200*10000.
SG255 gas cylinder a516 grade 70 welding steel is widely used in petroleum, chemical industry, power station, boiler, etc, used to make the reactor, heat exchanger, separator. The company is a professional gas cylinder steel exporter and a steel stockist in china. We keep more than 1000 tons SG255 gas cylinder steel coils in a516 grade 70 welding stock every month. If you want to get the steel price, please do not hesitate to contact us. Any need in SG255 Chemical Composition and Mechanical Properties, please feel free to contact us by email or calling to us.
Our quality and service commitment: a516 grade 70 welding product quality problems, life-long replacement.In the process of using, any time if you find we supplied steel materials not conform to the requirements of technical standards, we can replace it for you free of charge. However, it should be noted that non product quality problems caused by improper use are not covered by the warranty. Please pay attention to the service time commitment as well as the product quality assurance commitment. Because only the products of big brands and reliable enterprises with complete after-sales service system can truly realize the long-term product quality assurance and the whole process of service.
Ask for the instant quotation