Casing pipe and accessories
Casing Pipe Feature:
Grade: J55,K55,L80,N80Q,C90,T95,P110 
Size: 4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8", 9 5/8", 10 3/4", 13 3/8", 16", 18 5/8", 20"
Wall thickness: 6.35 - 12.70 mm
Thread type: STC, LTC, BTC
Length: R1,R2,R3
Standard: Accord with API 5CT 
Casing pipe accessories include: casing nipple, casing coupling.
Casing specification: