API 5CT casing pipe Process: ERW and Seamless . Standard: API 5CT Process: ERW and Seamless Standard: API 5CT Certificate: Casing: LTC, STC, BTC, VAM.Out Diameter: Casing: OD 4 1/2"- 20" (114.3mm-508mm) Wall Thickness: 0. 205"- 0.635" Length:R1(4.88mtr-7.62mtr), R2(7.62mtr-10.36mtr), R3(10.36mtr or longer) Steel Grade:H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, Q-125 Surface: Corrosion ...