Boiler steel plates mainly refer to hot-rolled medium-thick plate materials used to manufacture superheaters, main steam pipes and boiler firebox heating surfaces.

The most fundamental difference between ASTM A53 Grade A and Grade B steel pipes is their mechanical properties, especially their minimum yield strength and tensile strength.This makes Grade B more suitable than Grade A for high pressure applications.

ASTM A795, A53 and A135 pipe are all steel pipes produced in accordance with the standards of the American Society for Testing and Materials (ASTM International). These three types of pipes can all be suitable for firefighting pipes and can also be produced by electric resistance welding, but they are slightly different.

Regarding the design of surface casing, technical casing and oil layer casing, each has its own design characteristics and design emphasis.

ASTM A795 ERW Pipe is an electric resistance welded pipe produced in accordance with the standards of the American Society for Testing and Materials (ASTM International).

The casing head is an important connection between casing and wellhead equipment.Its lower end is connected to the surface casing through threads, and its upper end is connected to the wellhead device or blowout preventer through flanges or clamps.