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The BMI USA 10590 is a bulk pack of 66 black steel pipe nipples, each measuring 3/4 inch in diameter and 6 inches in length. Black steel pipe nipples are threaded fittings used to connect sections of pipe in gas distribution, industrial piping, and fire suppression systems. The black finish is a standard mill-applied iron oxide coating that distinguishes these fittings from galvanized pipe and indicates suitability for dry-system applications. At 19.37 pounds for the full pack, this assortment is sized for shop stock, service vans, or job-site inventory.
These nipples are commonly used in residential and light commercial gas piping runs, including natural gas and propane supply lines to appliances, boilers, and unit heaters. They are also a standard component in threaded black iron piping systems for industrial fluid transfer. Plumbers, pipefitters, and HVAC technicians typically keep 6-inch close-cut nipples on hand for branch connections, valve drops, and appliance stub-outs. The 66-piece assorted quantity supports ongoing service work without repeated small-quantity orders.
Designed as a standard NPT-threaded black steel pipe nipple for use with 3/4 inch black iron pipe fittings, valves, unions, and couplings in threaded piping systems.
Installation of black steel gas piping must be performed by a licensed plumber or pipefitter in accordance with IFGC and applicable local codes. Shut off gas supply and confirm zero pressure before making or breaking any threaded connections. Apply listed pipe thread sealant or PTFE tape rated for gas service to all male threads before assembly. Do not use black steel pipe nipples in wet, potable water, or steam systems without confirming suitability with local code authority.
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