International standards for tubing
The American Petroleum Institute (API) has numerous manufacturing requirements for tubing. Many API standards have also been adopted by the International Standards Organization (ISO). The tubing purchaser and designer should be aware of API requirements and testing procedures (see APISpec. 5CT).[1] All tubing should meet API minimum requirements. In critical wells, the purchaser may want to receive and review the manufacturer's test results.
June, 2015