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Pyrocrete 341


A minimum average 52 lb./ft³ (833 kg/m³) density, Portland cement based, fireproofing that provides hydrocarbon fire, jet fire and cryogenic spill protection for structural steel. Recommended areas of application include refineries, petrochemical and LNG facilities.


File Name Language Download
Pyrocrete 341 PDS English

File Name Language Download
Pyrocrete 341 SDS English

File Name Language Download
Application Manual - Pyrocrete 341 English

Pyrocrete 341 - Brochure English

Pyrocrete 341 UL 1709 XR747 English

Pyrocrete Series - Shop Application Brochure English

Technical Bulletin - Durometer Hardness English

Video - Pyrocrete 341 Promotional English

Video - Pyrocrete 341 Spray Test English

Video - Pyrocrete 341 vs a Cinder Block English

Features & Benefits

  • UL 1709 hydrocarbon fire rated up to 4 hours
  • ISO 22899-1 jet fire rated from 30 minutes to 2 hours
  • ISO 20088-1 cryogenic spill protection to -50°C
  • Resistant to 4 bar blast overpressure
  • ISO 20088-1 cryogenic spill followed by ISO 22899-1 jet fire
  • 4 bar overblast followed by third party witnessed hydrocarbon fire
  • NFPA 290 simultaneous torch and hose stream resistant (extended to 150 minutes)
  • UL 2431 Category I-A Outdoor Heavy Industrial and Exterior Environmental Purpose
  • Lightweight - one-third the weight of concrete
  • Ideal for field and shop application
  • Enhanced application characteristics (3/4" - 1 1/2" (19 - 38.1 mm) on initial pass)
  • Excellent durability with early hardness development
  • Non-friable – high impact strength
  • Asbestos-free – complies with EPA and OSHA regulations