For A&E Engineers & Risk Assessors

Engineer MIC Out of Your Master Spec.: The Universal Physical Failsafe for All Wet, Dry, and Preaction Fire Sprinkler Systems.

  As a specifying engineer or risk assessor for Healthcare Facilities, Class-A Commercial High-Rises, Logistics Warehouses, or Mission-Critical Data Centers, your primary objective is long-term asset protection.

  Whether you are designing a standard Wet-Pipe System or a nitrogen-inerted Dry/Preaction System, the core enemy remains the same: Microbiologically Influenced Corrosion (MIC). If traditional steel pipes arrive on-site coated in cutting oils, varnish, and mill debris, you are unknowingly introducing the exact organic food source that fuels MIC.

  Stop relying on reactive chemical flushing. Start specifying a physical baseline.

  At Josh Global Corporation, we manufacture UL/cUL listed, "Clean-Interior" bare-metal fire sprinkler pipes. By completely eliminating internal hydrocarbons and debris at the manufacturing level, we effectively starve MIC before the system is even pressurized.

The Engineering Baseline: Universal System Protection

🔄 1. Universal Nitrogen Synergy (WPNI & DPNI)

  Whether your design employs Wet Pipe Nitrogen Inerting (WPNI) to eliminate trapped oxygen or Dry Pipe Nitrogen Inerting (DPNI), residual manufacturing oils act as a physical barrier. Our bare-metal interior serves as the perfect physical complement to specified 98% Nitrogen generators (such as Potter or ECS). Without oil interference, the nitrogen passivation process is immediate and flawless across all system types, stopping corrosion at the molecular level. (Fully supports the risk-reduction mandate of FM Global DS 2-1).

📜 2. Guaranteed Liability Transfer (15-Year Warranty)

  When our clean-interior piping is paired with any qualified 98% Nitrogen system (wet or dry), it qualifies for an Owner-Facing 15-Year Limited Leak Warranty. This definitively transfers long-term MIC liability away from the specifying firm and the owner, directly to the manufacturer.

🌱 3. Verifiable ESG & LEED Alignment

  Specify a system that bypasses hazardous chemical on-site flushing. Our process guarantees zero toxic wastewater discharge into municipal systems, perfectly aligning with your clients' strict Environmental, Social, and Governance (ESG) targets for any modern build.

Engineering & Insurance Compliance Note: Navigating FM Standards

​  Our steel sprinkler piping is UL & cUL listed (UL 852) and engineered with a highly specific, dual-surface configuration: an externally galvanized surface paired with a 100% clean, non-galvanized bare-metal interior.

​ Because this advanced hybrid design is uniquely engineered to physically eradicate MIC, it currently falls outside the legacy testing scope of the standard FM Approvals program for basic steel pipe. This is a classification limitation, not a performance failure. For Mission-Critical facilities insured by FM Global, this system is strategically designed to be approved via Owner Variance. Here is why our UL/cUL listed piping remains the optimal, risk-averse specification:

Aligned with FM's Own Risk Data: Our design directly supports FM Global Property Loss Prevention Data Sheet 2-1, which strongly cautions against internally galvanized steel pipe in wet systems due to heightened corrosion risks. Our clean, non-galvanized interior perfectly answers this exact FM mandate.

Passive Component Acceptance: In the eyes of property insurance reviewers, steel piping acts as a passive structural component. As long as active equipment (like the Nitrogen generator) holds the required FM certifications, field engineers routinely accept our UL-listed, ASTM-compliant piping because it actively eliminates the massive financial risk of MIC leaks.

​The Comprehensive Acceptance Package: To empower underwriters to confidently approve the system, we provide a complete engineering package. This includes our UL/cUL listings, the Clean-Pipe Evidence Pack, and project-specific commissioning records (WPNI/DPNI). By explicitly aligning with FM Global Data Sheet 2-1, our system provides the exact verifiable data risk reviewers require—effectively eliminating the financial risk of MIC, and positioning the facility to safely secure and maintain its premium FM insurance coverage. 

Copy & Paste This Into Your Division 21 Master Spec

  Force the highest standard of asset protection. Add the following exact language to your Fire Protection Bid Specifications:

  "All fire sprinkler piping, regardless of system application (Wet, Dry, or Preaction), must be UL/cUL listed, bare-metal steel, delivered 100% free of internal oils, varnish, and cutting debris from the manufacturer (e.g., Josh Global / FireSprinklerPipe.com). The clean-interior piping shall be physically verified and fully compatible with the specified 98% Nitrogen inerting system (WPNI or DPNI) to activate the mandatory 15-Year Manufacturer Leak Warranty against Microbiologically Influenced Corrosion (MIC)."