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The ASC ENGINEERED SOLUTIONS 4354000880 is a black steel seamless extra heavy pipe nipple sized at 3/8 inch by 5 inches. It is manufactured to A106B standards, making it suitable for pressure and temperature applications common in commercial and industrial piping systems. The extra heavy wall classification provides greater pressure tolerance compared to standard-weight fittings. Licensed plumbers, pipefitters, and mechanical contractors install nipples like this when connecting threaded pipe sections in gas, steam, or liquid systems where durability and wall strength are required.
This nipple is suited for use in commercial and industrial mechanical systems, including gas distribution, steam lines, and hydronic piping. Its black steel construction and extra heavy wall make it appropriate for higher-pressure service conditions. The 3/8 inch by 5 inch dimensions position it as a close-quarter run nipple in tight piping assemblies or where a specific offset length is needed between fittings.
Designed as an OEM-style replacement or new-installation fitting for threaded black steel pipe systems requiring 3/8 inch extra heavy nipples in non-domestic service applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes, including the IPC and IFGC where relevant. Shut off and depressurize the system completely before removing or installing any threaded fittings. Apply appropriate thread sealant or listed pipe-thread compound rated for the service medium before hand-tightening and wrench-tightening to proper engagement. Do not over-torque threaded connections, as this can damage the fitting or mating threads.
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