ASTM

A-53
Covers seamless and welded black and galvanized steel Pipe furnished in
the following types and grades:
  • Type F - furnace Butt Welded (also known as continuous Weld) 1/8 in. to 4 in. NPS
  • Type E - Electric-Resistance Welded, Grades A and B 1/8 in. to 24 in. NPS
  • Type S - Seamless, Grades A and B 1/8 in. to 26 in. NPS
Except for Type F, pipe ordered to this specification is suitable For
forming, bending, and flanging. Grade B, the most common, has a minimum
yield of 35,000 psi.

A-106 Covers seamless only carbon steel pipe for high-temperature service.Furnished in one of three grades, A, B, or C. Suitable for bending,flanging, and similar forming operations.

A-120 This specification covers black and hot-dipped galvanized welded and seamless steel pipe in nominal sizes 1/8in. to 16 in. inclusive with nominal (average) wall thickness. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification . Pipe ordered under this specification is intended for ordinary uses in steam, water, gas, and air lines, but is not intended for close coiling or bending, or high temperature service. No to this specification, except hydrostatic test which shall be made at the mills, as this specification is intended to cover pipe purchased mainly from jobber’s stocks.

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