Casing Pipes are used in the drilling wells for oil, natural gas, hot water, steam, groundwater, salt and similar solid materials. According to API Standards, steel materials with low to high strength such as H40, J55, K55, N80-Q, M65, L80, C90, C95, T95, P110 and Q125 are used in casing pipes.
Pipe diameters, wall thicknesses, steel material and thread type are selected depending on the well depth and Casing alignment and targeted with high safety coefficients. The diameter of the casing pipes varies from 4 ½ ”(114.3 mm) to 20” (508 mm) according to the API standard.
Casing pipes, like other well pipes, are connected to each other by means of sleeves and are lowered. API (American Petroleum Institute) standards are mostly used in the production of these pipes. Depending on this standard, 3 different types of thread are used in Casing pipes. These teeth are known as STC (Short Tooth Casing), LTC (Long Tooth Casing) and BTC (Buttress Tooth Casing) and are opened according to API 5B standard.
These pipes, which are produced in API 5CT standards for use in hot water wells, oil and natural gas wells, are shipped straight-ended or according to customer demand by threading and belling in accordance with API 5b standard and filter opening and coating processes.