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ASTM F781-95

Standard Specification for Perfluoro (Alkoxyalkane) Copolymer (PFA) Plastic-Lined Ferrous Metal Pipe and Fittings (Withdrawn 2004)
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1.1 This specification covers factory-made perfluoro (alkoxyalkane) copolymer (PFA) plastic-lined ferrous metal pipe and fittings, primarily intended for conveying corrosive liquids and gases. Requirements for materials, workmanship, dimensions, design, construction, working pressures and temperatures, test methods, and markings are included.

1.2 The values given in parentheses are provided for information purposes only.

Note 1 - This specification does not include products coated with PFA nor does it define the suitability of PFA-lined components in chemical environments.

1.3 The ferrous piping products shall meet the requirements of the relevant specification listed in 1.3.1 through 1.3.4. Nominal sizes from 1 through 12 in. in 150 and 300 psi (1.0 to 2.0 MPa) ratings are covered.

Note 2 - The PFA sealing faces may prevent achievement of the full pressure rating of the ferrous housings. For pressure limitations, the manufacturer should be consulted.

1.3.1 For Ferrous Pipe:

  • ASTM Designation A 53 - Pipe, Steel, Black, and Hot-Dipped, Zinc-Coated Welded and Seamless
  • ASTM Designation A 106 - Seamless Carbon Steel Pipe and High-Temperature Service
  • ASTM Designation A 135 - Electric-Resistance-Welded Steel Pipe
  • ASTM Designation A 587 - Electric-Welded Low-Carbon Steel Pipe for the Chemical Industry
  • ASTM Designation A 312 - Seamless and Welded Austenitic Stainless Steel Pipe

1.3.2 For Ferrous Flanges:

  • ASTM Designation A 105 - Forgings, Carbon Steel, for Piping Components
  • ASTM Designation A 181 - Forged or Rolled Steel Pipe Flanges, Forged Fittings and Valves and Parts for General Service
  • ASTM Designation A 182 - Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
  • ASTM Designation A 216 - Carbon-Steel Castings Suitable for Fusion Welding for High-Temperature Service
  • ASTM Designation A 395 - Ferritic Ductile Iron for Pressure Retaining Castings for Use at Elevated Temperatures
  • ASTM Designation A 536 - Ductile Iron Castings

1.3.3 For Ferrous Fittings:

  • ASTM Designation A 105 - Forgings, Carbon Steel, for Piping Components
  • ASTM Designation A 181 - Forged or Rolled Steel Pipe Flanges, Forged Fittings, and Valves and Parts for General Service
  • ASTM Designation A 216 - Carbon Steel Castings Suitable for Fusion Welding for High-Temperature Service
  • ASTM Designation A 234 - Piping Fittings Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures
  • ASTM Designation A 351 - Austenitic Steel Castings for High-Temperature Service
  • ASTM Designation A 389 - Alloy Steel Castings Specially Heat-Treated for Pressure Contained Parts Suitable for High-Temperature Service
  • ASTM Designation A 395 - Ferritic Ductile Iron for Pressure Retaining Castings for Use at Elevated Temperatures
  • ASTM Designation A 536 - Ductile Iron Castings
  • ASTM Designation A 403 - Ductile Iron for Pressure Containing Castings for Use at Elevated Temperatures

1.4 The PFA-lined flanged pipe and fitting assemblies are limited to use from -20 to 500°F (-29 to 260°C). For use below -29°C (-20°F) consult the manufacturer.

Note 3 - The above temperature limitations are based on noncorrosive test conditions. Use in specific aggressive environments may alter the above temperatures, and these limits shall be established by mutual agreement between the purchaser and manufacturer.

1.1 This specification covers factory-made perfluoro (alkoxyalkane) copolymer (PFA) plastic-lined ferrous metal pipe and fittings, primarily intended for conveying corrosive liquids and gases. Requirements for materials, workmanship, dimensions, design, construction, working pressures and temperatures, test methods, and markings are included.

1.2 The values given in parentheses are provided for information purposes only.

Note 1—This specification does not include products coated with PFA nor does it define the suitability of PFA-lined components in chemical environments.

1.3 The ferrous piping products shall meet the requirements of the relevant specification listed in 1.3.1 through 1.3.4.

Nominal sizes from 1 through 12 in. in 150 and 300 psi (1.0 to 2.0 MPa) ratings are covered.

Note 2—The PFA sealing faces may prevent achievement of the full pressure rating of the ferrous housings. For pressure limitations, the manufacturer should be consulted.

1.3.1 For Ferrous Pipe:

  • ASTM Designation A 53 — Title of Specification: Pipe, Steel, Black, and Hot-Dipped, Zinc-Coated Welded and Seamless
  • ASTM Designation A 106 — Seamless Carbon Steel Pipe and High-Temperature Service
  • ASTM Designation A 135 — Electric-Resistance-Welded Steel Pipe
  • ASTM Designation A 587 — Electric-Welded Low-Carbon Steel Pipe for the Chemical Industry
  • ASTM Designation A 312 — Seamless and Welded Austenitic Stainless Steel Pipe

1.3.2 For Ferrous Flanges:

  • ASTM Designation A 105 — Forgings, Carbon Steel, for Piping Components
  • ASTM Designation A 181 — Forged or Rolled Steel Pipe Flanges, Forged Fittings and Valves and Parts for General Service
  • ASTM Designation A 182 — Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
  • ASTM Designation A 216 — Carbon-Steel Castings Suitable for Fusion Welding for High-Temperature Service
  • ASTM Designation A 395 — Ferritic Ductile Iron for Pressure Retaining Castings for Use at Elevated Temperatures
  • ASTM Designation A 536 — Ductile Iron Castings

1.3.3 For Ferrous Fittings:

  • ASTM Designation A 105 — Forgings, Carbon Steel, for Piping Components
  • ASTM Designation A 181 — Forged or Rolled Steel Pipe Flanges, Forged Fittings, and Valves and Parts for General Service
  • ASTM Designation A 216 — Carbon Steel Castings Suitable for Fusion Welding for High-Temperature Service
  • ASTM Designation A 234 — Piping Fittings Wrought Carbon Steel and Alloy Steel for Moderate and Elevated Temperatures
  • ASTM Designation A 351 — Austenitic Steel Castings for High-Temperature Service
  • ASTM Designation A 389 — Alloy Steel Castings Specially Heat-Treated for Pressure Contained Parts Suitable for High-Temperature Service
  • ASTM Designation A 395 — Ferritic Ductile Iron for Pressure Retaining Castings for Use at Elevated Temperatures
  • ASTM Designation A 536 — Ductile Iron Castings
  • ASTM Designation A 403 — Ductile Iron for Pressure Containing Castings for Use at Elevated Temperatures

1.4 The PFA-lined flanged pipe and fitting assemblies are limited to use from -20 to 500&#176F (-29 to 260&#176C)</b>. For use below -29&#176C (-20&#176F) consult the manufacturer.</p> <p><b>Note 3</b>—The above temperature limitations are based on noncorrosive test conditions. Use in specific aggressive environments may alter the above temperatures, and these limits shall be established by mutual agreement between the purchaser and manufacturer.</p>

SDO ASTM: ASTM International
Document Number F781
Publication Date Jan. 1, 1995
Language en - English
Page Count 4
Revision Level 95
Supercedes
Committee F17.11
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