Hebei Borun Steel Trade Co.,Ltd is a rich-experienced manufacturer and exporter of seamless Casing Pipe, ERW casing pipe, Stainless Steel ERW Pipe Specifications of Casing Product Name: API 5CT CASING PIPE Type: Seamless (SMLS), Electric Resistance Welded (ERW) Length: R1, R2, R3 Diameter: 4 1/2" ~ 20" (114.3 mm ~ 508mm) Packing: Protection Caps on both ends and in bundles with steel strips and two tags as per export requirements Surface Treatment: Anti-corrosion Water Based Paint Steel Grade: H40/J 55/K55/N80/ C75/L80/C90/ T95/ P110/Q125 Threads or Connection: LTC/STC/BTC/ Left Hand connection or other premium threads like: VAM