The material and manufacturing process of fire hydrants vary depending on type and application.
However, they are generally cast, with some spare parts using different casting processes. According to available information:
Outdoor fire hydrants
are made of cast iron or copper alloy and produced using a casting process. For example, some products use cast iron fire hydrants or brass fire hydrant heads, and the manufacturing process involves lost foam casting.
Indoor fire hydrants
Material specifications are more stringent, with valve stems required to pass tensile tests (GB/T 228 standard). Some products use stainless steel or anti-corrosion treatments.
In summary, fire hydrants include cast iron or copper alloy products produced using a casting process, as well as models using non-cast materials such as stainless steel.
What is the typical lifespan of a fire hydrant?
The lifespan of a fire hydrant varies depending on type, material, and operating environment, as follows:
1. Outdoor fire hydrants
Above-ground fire hydrants: The design lifespan is typically 10-15 years.
Underground fire hydrants: Due to their humid environment, they are susceptible to corrosion and have a shorter lifespan, generally around 10 years. Special environments (such as near chemical plants): The lifespan may be shortened to 5-6 years.
2. Indoor Fire Hydrants
There is no fixed expiration date, but a comprehensive inspection every 3-5 years is recommended, depending on the material (e.g., cast iron, stainless steel) and maintenance status.
Harsh environments (such as humidity, corrosive gases) or inadequate maintenance may significantly shorten the lifespan.
Of course, if you require custom large quantities of cast iron parts, you can partner with Mulan Metal. With 12 years of experience in metal casting and processing, Mulan Metal has helped clients in over 30 countries complete various cast iron parts commissions and has received consistent praise. We look forward to your consultation and cooperation.
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