api 5ct Stc Slotted casing and tubing Dimension range(OD inch) 4-1/2â?�~20â?� (114.3mm-508mm) Wall Thickness As per API 5CT standard (the latest edition) Length R1,R2,R3 Steel Grade H40, J55, K55,C75,N80, L80,C90,T95, P110 ,Q125 Pipe Type Seamless (SMLS),Electric Resistance Welded (ERW) Threads or Connection BTC, STC, LTC, Left hand connection or other premium thread like :VAM Surface Treatment Anti-corrosion Water Based Paint TPI SGS, BV, MOODY, CCIC can be arranged before shipment. Packing Protection caps on both ends and in bundles with steel strips and two tags as per export requirements Application Used as the architectural retainer for the walls of oil, gas wells