Classification of oil casing pipe Materials:
There are many types, the basic ones are ordinary carbon steel, J55, L80, N80, P110, etc .; then there are more special materials, such as 3Cr, 9Cr, 13Cr, 22Cr, etc., which are mainly carbon dioxide-resistant; and materials that prevent hydrogen sulfide , Such as 90SS, 95SS, etc. In addition, higher level, there are nickel-chromium alloy pipes, according to different manufacturers, different numbers, there are some special needs, such as high anti-extrusion material, some manufacturers will add the above TT indicates anti-crush.
