... API 5CT,Carbon Steel5"ZS300MeterLength: R2, R3.Application: serves as walls of a well .Packing: bundle or bulk Material grade: J55, K55 ... API 5CT,Carbon Steel7"ZS300MeterLength: R2, R3.Application: serves as walls of a well .Packing: bundle or bulk Material grade: J55, K55 ... Carbon Steel10 3/4"ZS300MeterLength: R2, R3.Application: serves as walls of a well .Packing: bundle or bulk Material grade: J55, ...