L80 API seamless casing pipe or tubing can be divided into 3 categories: L80-1, L80 9Cr and L80 13Cr. These 3 steel grades have no difference in mechanical properties, but different in heat treatment method and chemical composition. Among them L80 13Cr is the highest grade, which is always used in special environment.
Seamless steel casing pipe with coupling and thread protector
Standard: API 5CT
Material: H40, J55, K55, N80, L80, P110, Q125.
Threads: LTC ( Long Round Thread), STC ( Short Round Thread), BTC ( Buttress Thread)
Length:R1(4.88-7.62m), R2(7.62-10.36m), R3(10.36-14.63m))
Pipe length less than 5.8m (20 feet container)
Pipe length less than 11.8m (40 feet container)
Pipe length more than 11.8m (Bulk shipment)