Quality Standards of Casing and Tubing:

API 5CT Specification for Casing and Tubing

SY/T 6194 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells

BS EN ISO 11960 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells

NF M87-207 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells

JIS G3439 seamless steel oil well casing, tubing and drill pipe

ISO 4270 Steel tube for well casing pipes

GOST 632-80 Casing and Coupling

Material:

API 5CT:

H40, J55, K55, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V150

Connection:

Casing: LTC, STC, BTC, NEW VAM, VAM TOP, VAM FJL, VAM ACE etc.

Tubing: NU, EU, XL, PH-4, PH-6, LTC, STC, BTC, NEW VAM, VAM TOP, VAM FJL, VAM ACE etc.