APPLICATION & MATERIAL GUIDE

Common Materials for Refinery Process Piping

Refinery systems use multiple material classes selected by fluid, temperature, pressure, corrosion mechanisms and process-unit specification. Carbon, Cr-Mo alloy and stainless families are frequent starting points.

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YOUR QUESTION

Which materials are commonly used in refinery piping?

OPTION 1

Carbon steel

Grade
A106 B · A234 WPB · A105N
Reference standard
ASTM/ASME

Common for many hydrocarbon and utility services within corrosion and temperature limits.

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OPTION 2

Cr-Mo alloy steel

Grade
P11/P22 · WP11/WP22 · F11/F22
Reference standard
ASTM/ASME

Used in elevated-temperature hydrogen, steam and process services as specified.

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OPTION 3

Stainless Steel 316L

Grade
TP316L · WP316L · F316L
Reference standard
ASTM/ASME

Used for selected corrosive process services.

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INFORMATION REQUIRED

Confirm before selection

  • Process design conditions and corrosion circuits
  • Sour service / H2S requirements
  • Hydrogen service and hardness control
  • PMI, PWHT and inspection class
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