Oxygen is a harmful element in A709 Gr 50 high strength steel steel. With the increase of oxygen content, the strength of A709 Gr 50 high strength steel steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of A709 Gr 50 high strength steel steel.
Since its inception, the company has always adhered to the development policy of "survival with quality, development with products, cooperation with credibility, and service with customers". I would like to express my heartfelt thanks to the old and new friends and customers who have always given care, support and help to the company! And sincerely hope to establish a long-term cooperative relationship with them, mutual benefit and common development.
We cooperated with the Peruvian government for many years. And supply them large diameter steel pipes and pipe fittings to support their Hydropower Station Projects. We do 100% UT, RT, Hydraulic test and so on tests for the A709 Gr 50 high strength steel steel pipes. And do PT, MT and so on tests for the pipe fittings. We published "Welding Procedure Qualification report" after production. And our mill will keep the test record in the documentary department for 5 years. If meet any problems in following application, we can check the test record easily and assist to solve problems at the first time.
A709 Gr 50 high strength steel products order online: 8*2400*12000, 9*2300*6870, 10*2400*8300, 10*2400*8450, 12*2820*11500, 14*1950*10000, 14*1950*10450, 14*1950*10500, 14*1950*10550, 14*1950*10600, 14*1950*10700, 14*1950*10800, 14*2150*8500, 14*2150*9300, 14*2400*10000, 16*2150*10950, 20*1950*9000, 20*1950*9150, 25*2100*8400, 25*2100*8650, 25*2400*11600.
