The API tubing is defined as a pipe that drops right into the wells for the production or injection of fluids. In oil expedition, it drops hole to remove underground oil or gas, depending on threaded link. It normally travels through the oil casing, which plays a role of protection and also seclusion.The OCTG tubing dimension in API standard is 1.05 “- 4 “. Our manufacturing array is 2 3/8 “- 4 1/2″ (60.32 mm – 114.3 mm). The tubing pipe produced within this variety is used most regularly in oil and also gas exploration.