... to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35 ... psi.1. Casing pipe Product specification: O.D.: Casing: 4 1/2″-30″ (114.3mm-762mm)Tubing: 1.05 ... C110, P110, Q125, V150Annual output:150000 tons3. Thread type:Casing: STC, LTC, BTC, OTTM, OTTG, BTO, NEW VAM ... TOP, VAM FJL, VAM ACE, FOX, Hydril, Hunting etc.Tubing: NU, EU, XL, PH-4, PH-6, LTC, ...