The standard covers pipe sizes in NPS (National Standard Straight) from 1/8 inch to 48 inch (10.3mm DN6 - 1219mm DN1200), meanwhile complied the nominal wall thickness of the standard ASME B 36.10M.Building Hoist Supplier For other sizes out of the ASME B 36.10M is also allowed to use this standard specification.

The materials used for ASTM A106 standard specification shall be applicable for bending, flanging, or the similar forming processes. In case the steel material is to be welded, the welding process supposed to be suitable for this grade of ASTM A106, and applicable for the high temperature working environment.

Where there is a superior or a higher grade for the ASTM A106 steel pipe is required, the standard has a optional specification for the supplementary requirements, for the pipes that used this standard. More over, these supplementary specification asked for the additional test, when the order is to be placed.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.

Heat treatment methods for API 5CT casing and tubing is an important factor to differ each grade. Products requiring heat treatment shall be subjected to full body and full length heat treatment. The heat-treated upsetting product should be heat treated full body, full length after upsetting.

A separately heat treated coupling blank is acceptable. If the finishing temperature is higher than the upper critical temperature of the treated steel and the pipe is air cooled, it shall be considered to be normalized.in case of welding type, weld seam shall be heat treated to a minimum temperature of 540 ℃(1000°F), or a certain treatment method shall be used to make the no untempered martensite structure in the weld.