1.The pup joint are used to adjust the height of full length tubing or casing strings, they are also used to asjust the depth of downhole tools.
2.Standard: API 5CT
3.Size: 2 3/8″, 2 7/8″, 3 1/2″, 4 1/2″ and others
4.Grade: J55/K55/N80/L80/P110
5.Length: 2FT/3FT/4FT/5FT/6FT/8FT/10FT/12FT