S-4550K251 1.278" ID x 1 21/32" OD x 6" Long ASME B1.20.1, ASTM A53, ASTM A733 Thick-Wall Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-coated steel construction for extended service life in demanding industrial environments
• Superior pressure handling with Schedule 80 thick-wall design, suitable for 300 and 600 flange class applications
• Reliable leak-proof connections through precision NPT threading on both ends, ensuring secure sealing
• Versatile fluid compatibility for air, natural gas, oil, steam, and water systems across multiple industries
• Exceptional structural integrity from welded construction, providing robust performance under high stress
• Guaranteed dimensional accuracy with compliance to ASME B1.20.1 thread standards for perfect fitment
• Broad material compatibility designed for use with iron and steel fittings, simplifying system integration

Professional Applications & Engineering Value

This black-coated steel threaded pipe nipple delivers critical engineering solutions for industrial fluid systems handling air, natural gas, oil, steam, and water. The welded construction combined with Schedule 80 thick-wall design provides exceptional burst pressure resistance, preventing system failures in high-pressure applications. The NPT threading on both ends ensures leak-tight seals while the black coating offers superior corrosion protection, significantly extending service life in harsh environments. Engineered to meet rigorous ASME B1.20.1, ASTM A53, and ASTM A733 standards, this nipple maintains dimensional precision for reliable connections with iron and steel fittings across petrochemical, manufacturing, and utility applications where 300 and 600 flange class requirements demand uncompromising performance.

Specification Summary & Compliance

Manufactured to exacting ASME B1.20.1 NPT thread standards with dimensional compliance including 1 1/4" pipe size, 6" length, and Schedule 80 specifications. Constructed from black-coated steel meeting ASTM A53 and ASTM A733 material standards, ensuring consistent quality and performance. Suitable for use with iron and steel fittings rated for Class 300 and steel flanges rated for Classes 300 and 600. The product maintains precise dimensional tolerances with 1.278" ID, 1 21/32" OD, and 0.191" wall thickness for reliable system integration.