Composition and treatment of pipe material

According to API 5CT standard, steel material used for making the pipe billet supplied shall be grain refining treatment. This steel shall contain one or more grain refining elements, such as a certain amount of aluminum, niobium, vanadium or titanium, so that the austenite grains of the steel Grain refinement.

• Pipes supplied shall be manufactured in seamless type or ERW type.

• Couplings, coupling stock and coupling materials shall be in seamless.

• Cold drawn tubing pipe shall be properly heat treated, otherwise is not acceptable.

• Casing and tubing attachment materials shall be seamless pipe, unless other type stated on the order