1. API5CT: is the American Petroleum Institute issued a standard for petroleum casing.
2. API5L: refers to the line pipe API 5L line pipe, is ISO and API jointly issued pipe steel pipe standards.
- Second, the process is different
1. API5CT: the main material main material B, X42, X46, X56, X65, X70 and so on. From raw materials to products before leaving the factory to carry out compression test, tensile test, impact test, tensile test and other related testing and inspection.
2. API5L: is the use of micro-alloying heating treatment process, seamless stainless steel pipe production costs are significantly higher than welded pipe, and with the improvement of steel grade, such as X80 above the steel grade pipeline pipe on the carbon equivalent limit.
- Third, the use of different
1. API5CT：Mainly used in the transportation of oil, natural gas, gas, water and other liquids, gases.
2. API5L：Pumping out the ground oil, vapor, water, through the pipeline pipe to the oil and gas industry enterprises.
