Oil and gas

API 5L is an industry standard for steel pipes that transfer oil, gas and water across long distances. It comes in a variety of grades, from GR.

Carbon Steel API 5CT GR L80 Pipe OD: 4 1/2"-20", (114.3-508mm) Carbon Steel API 5CT Grade L80 Pipeline wall thickness: 1.0mm – 30 mm 5CT GR L80 Carbon Steel Tube Sizes: 114.3 mm (4.5 in) to 406.4 mm (16 in) API Grade 5CT L80 Carbon Steel Pipe Sizes: 26.7 mm (1.05") to 114.3 mm (4.5")

ASTM A335 is the standard specification for seamless ferritic alloy steel pipe for high temperature applications. Different grades (P1, P2, P5, P9, etc.) represent different alloy compositions.

Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion.