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Large-diameter pipes LSAW for sour service

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Large diameter pipes for sour service are used for the transportation via pipeline of hydrogen sulfide-containing substances, CO₂-containing substances.

Pipes must withstand high mechanical loads during installation and have resistance to operational corrosion.

Technical data

Outer diameter, mm/in Wall thickness, mm Length, m Steel grades Standards
508-1,422/20-56 8 - 40 9.5 - 18.3 GR B - X100 API 5L, ISO 3183, CSA Z245.1, EN 10219-1, EN 10217-1, EN 10217-3, EN 10217-5

Products

L245MS or BMS L450MS or X65MS
L290MS or X42MS L485MS or X70MS
L320MS or X46MS
L360MS or X52MS
L390MS or X56MS normalized products
L415MS or X60MS up to L360NS or X52NS
Corrosion resistance testing

  • Hydrogen cracking test according to NACE TM 0284
  • Sulfide stress corrosion cracking according to NACE TM 0177
Compliance with

  • ANSI/NACE MR0175/ISO 15156-2
  • API Spec 5L / ISO 3183 Annex H

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