UL/FM Approved Red Painted Fire Sprinkler Steel Pipe from China Suppliers - Quality Factory Manufacturing
Detailed Description of Fire Sprinkler Steel Pipe
Fire sprinkler steel pipes are intended for automatic fire sprinkler systems. The primary purpose of these pipes is to automatically activate in the initial stages of a fire, discharging water uniformly across the given protected location to either contain or extinguish the fire. Our fire sprinkler pipes are mainly manufactured of quality carbon steel (Q235B) as the base metal, and manufactured by the (electric resistance welded) ERW process to production uniformity in the weld and high pressure resistance.
Corrosion protection of steel pipes is crucial in fire suppression systems because they usually have stagnant lines filled with water. We offer two main types of external surface treatment: red epoxy coating and hot dipped galvanizing. Firstly, the red epoxy coating offers good corrosion resistance and easy identification within complex systems. Secondly, the hot dipped galvanizing creates a layer of zinc-iron alloy on both the outside and inside of the pipe to combat corrosion, offering robust and long term protection against corrosion and is a good option for dry pipe and pre-action systems, (especially in corrosive environments).
ERW Welded Process
Electric Resistance Welded manufacturing ensures uniform weld quality and high pressure resistance throughout the pipe.
Red Epoxy Coating
Provides reliable corrosion resistance and easy visual identification within complex fire suppression systems.
Hot-Dip Galvanizing
Zinc-iron alloy layer on both surfaces offers robust, long-term protection — ideal for dry pipe and pre-action systems.
Key Parameters
| Parameter | Details |
|---|---|
| Base Pipe Type | ERW Welded Steel Pipe |
| Executive Standards | ASTM A795 ASTM A53 ASTM A135 UL 852 FM 1630 GB/T 3091 |
| Steel Grade | Gr.A Gr.B Q235B Q345B |
| Size Range (NPS) | DN15 – DN300 (1/2" – 12") |
| Wall Thickness | Schedule 10, Schedule 40 (or as per standard requirements) |
| Length | Usually 5.8m, 6m, 11.8m, 12m — customizable |
| Connection Type | Grooved Threaded Welded |
| Surface Treatment | Red Epoxy Coated (Internal/External) Hot-Dip Galvanized Black Painted Bare |
| Certifications | UL Listed FM Approved CE Certified |