ASME specifications are published by the American Society of Mechanical Engineers (ASME). ASME encourage collaboration, knowledge sharing, career enrichment, and skills development across all engineering disciplines. When it comes to art, science, and practice of standards associated with mechanical engineering this group takes the lead in setting codes and practices to help others. These specifications develop a standard for the manufacturing, testing, properties, and dimensions of steel pipe and components. In order to have the highest quality and most accuracy, ASME specifications change frequently to keep up with the times. This means that you should always be checking the most recent pipe specifications.
ASME SA53, modeled after ASTM A53, is a specification for hot-dipped, galvanized electric resistance welded, Grade B pipe, intended for use in mechanical and pressure applications. SA53 comes in three types (F,E,S) and two grades (A, B). Grade B tends to be the most popular grade for the clients because of the different applications that is convenient for. The outside diameter of grade B ranges from NPS ¼” to NPS 26”. The wall thickness of grade B schedules 10 through 160. The client requests grade B for the outside diameter and the wall thickness based on what application he or she tends to use that piping for. ASME SA53 pipe are designed for welding, grooving, threading, and bending but not for flanging. Common uses for ASME SA53 include structural applications such as piles, beams, pillars, and fencing. It is also used for low pressure uses such as piping for water, air, or steam.
SA-105/SA-105M 14 is a specification covering the standards for carbon steel forgings and carbon steel components used in ambient and high-temperature services. Some piping components under this specification include fitting, flanges, and valves.
ASME SA106, also known as the ASTM A106, is a specification covering seamless carbon steel pipe used for high temperature service. This pipe is commonly used in the construction of petrochemical plants, refineries, power plants, boilers, and ships.
SA-134 is a specification that covers pipe, steel and electric-fusion (ARC)-welded straight and spiral seam steel pipe NPS 14 or more in diameter, with wall thicknesses up to ¾ inch inclusive.
SA-135 – 09(2014) is a specification for electric resistance welded pipes (ERW), Grades are A and B, which are used for transporting vapor, gas, water and other liquids.
ASME B16.5 defines the specifications for pipe flanges and flanged fittings, ranging from NPS ½ to NPS 24.
B16.9 is a specification for factory-made wrought buttwelding fittings. This specification covers fittings sized NPS ½ through NPS 48. It does not, however, cover fabricated fittings.
B16.11 is a standard specification for threaded, socket weld, and forged fittings ranging in size from NPS ⅛ through NPS 4.
ASME 16.25 is a specification covering buttwelding ends, tolerances, and dimensions. This ASME standard pertains to the preparation of the buttwelding ends of pipe components to be attached to the piping system via welding.
The B16.28 specification is designed for wrought steel buttwelding short radius elbows and returns, sized from NPS ½ to NPS 24.
ASME B16.36 is a specification covering orifice flanges, sized from NPS ½ through NPS 24.
B16.47 covers specifications for large diameter steel flanges NPS 26 through NPS 60. Relevant pressure classes include: 75, 150, 300, 400, 600 and 900.
B36.10 is a specification published by the ASME to cover welded and seamless wrought steel pipe, size from NPS ⅛ through NPS 80.
B36.19 is a specification for stainless steel pipe, sizes NPS ⅛ through NPS 30.
SA-312/SA-312M – 17 is a standard specification for seamless, straight-seam welded and heavily cold worked austenitic stainless steel pipes. SA-312/ pipes are designed for general corrosive service and high temperature service. Companions for this specification include: stainless steel A403 butt weld fittings and ASTM A182 forged fittings.
ASME A333 is modeled after the ASTM A333 specification. It applies to nominal (average) wall carbon and alloy steel pipe. This pipe is used for low temperature service and other applications where notch toughness is necessary. Numerous grades of ferritic steel are included in this specification.
Also known as the ASTM A335, the ASME A335 specification pertains to a seamless ferritic alloy-steel pipe. This pipe is intended for high-temperature service and is suitable for fusion welding and forming operations, such as bending and flanging.
SA-672 – 14 is a standard specification for electric fusion steel welded pipe, designed for high pressure service at moderate temperatures. This specification pertains to electric fusion welded steel pipe with filler metal added, fabricated from a pressure vessel quality plate of numerous chemical analyses and strength levels and suitable for high pressure service at moderate temperatures.
SA-691 -18 is a standard specification for carbon and alloy steel pipe, electric fusion welded for high pressure service at high temperatures. This specification pertains to electric fusion welded steel pipe with filler metal added, fabricated from a pressure vessel quality plate of numerous chemical analyses and strength levels and suitable for high pressure service at high temperatures.