Customization: | Available |
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After-sales Service: | API Pipeline Steel Pipe Endless Service |
Warranty: | 5 |
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Hot rolled seamless api steel pipe deformation process can be summarized as three stages: extension, perforation and finishing. Hot rolled seamless steel pipes is relative to the cold-rolled, cold rolling is below the recrystallization temperature of the rolling and hot rolled is carried out at above the recrystallization temperature of the rolling. Hot rolled seamless steel pipe can damage the refinement of the crystal grains of the steel, cast microstructure of the steel ingot and eliminate the defects of the microstructure so that the the steel organization compacting, improves the mechanical properties. This improvement is reflected in the rolling direction so that the steel is no longer at a certain extent isotropic; pouring the formation of bubbles, cracks and osteoporosis, under high pressure and temperature can also be welded together.
Hot rolled carbon steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
steel grade | color sign | Yield Strength | Highest | Lowest | Rc | Elongation | API | |
Psi | MPa | MPa | MPa | (max) | % | scope of application | ||
H-40 | Black | 40 | 276 | 552 | 414 | 5A | ||
J-55 | Green | 55 | 379 | 552 | 517 | 22.5 | 5A | |
K-55 | Green | 55 | 379 | 552 | 665 | 18 | 5A | |
N-80 | Red | 80 | 552 | 758 | 689 | 17 | 5A | |
C-75 | Blue | 75 | 517 | 620 | 665 | 18 | 5AC | |
L-80 | Brown/Red | 80 | 552 | 665 | 665 | 23 | 18 | 5AC |
C-90 | Purple | 90 | 620 | 725 | 690 | 25.4 | (5AC) | |
C-95 | Brown | 95 | 665 | 760 | 720 | 25.4 | 16.5 | (5AC) |
P-110 | White | 110 | 758 | 965 | 865 | A5X | ||
Q-125 | White | 125 | 861 | 1040 | 930 | 18 | (5AQ) |
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.