What is the difference between the material specifications for A106 Grade B Seamless pipe and A53 Grade B (Type S) seamless pipe?
A106 is only produced as a seamless product and is available in three grades; A, B, C. There are no Types in A106 because it is produced only as a seamless product.
A53 comes in two grades and three types. A53 can be produced as a seamless product (A53 Grade A Type S (Seamless) and A53 Grade B Type S (Seamless) or as a welded product (A53 Grade B Type E (Welded), A53 Grade A Type E (Welded) or A53 Grade A Type F (Welded)).
The ASTM A106 specification is for seamless carbon steel pipe for High-Temperature Service. A106 must be produced with killed steel 2. It covers nominal pipe sizes (NPS) 1/8†NPS to 48 NPSâ€. For sizes 1- 1/2†NPS and under, A106 may be produced by two different processes; either hot finished or cold drawn. Unless otherwise specified, pipe 2″ NPS and over shall be furnished hot finished. Typical uses for A106 are for handling liquids and gasses at high temperatures and pressures in power plants, oil refineries, and industrial facilities.
The ASTM A53 specification is for steel pipe of welded or seamless construction, and available in black or hot-dipped zinc-coating (aka galvanized) 3. A53 does not require the use of killed steel as a starting material. It covers nominal pipe sizes 1/8†NPS to NPS 26†NPS. It is incumbent upon a purchaser to request the grade and type, whether black or galvanized, and the desired end configuration. A53 does not require nor prohibit any specific process (such as hot finished or cold drawn or other process) in the production of seamless pipe. Typical uses of A53 pipe are structural applications or for low pressure fluid systems such as air, gas, and water.
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