1.I-pup inosangana inoshandiswa kugadzirisa urefu hwehurefu hwakareba chubhu kana tambo dzechikwambo, dzinoshandiswa zvakare kugadzirisa hudzamu hwekudzikira maturusi.
2.Standard: API
5CT 3.Size: 2 3/8 ″, 2 7/8 ″, 3 1/2 ″, 4 1/2 4. uye vamwe
4.Grade: J55 / K55 / N80 / L80 / P110
5. Kureba: 2FT / 3FT / 4FT / 5FT / 6FT / 8FT / 10FT / 12FT