S-7727K431 3.826" ID x 4 1/2" OD x 2 7/8" Long ASME B1.20.1, ASTM A106, ASTM A53, ASTM A733 Thick-Wall Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-coated steel construction, extending service life in demanding industrial environments
• Enhanced pressure containment through Schedule 80 thick-wall design (0.337" wall thickness), preventing leaks and system failures
• Reliable sealing performance with fully threaded NPT connections that maintain tight seals under vibration and pressure fluctuations
• Seamless construction integrity eliminates weak points, providing consistent strength for high-pressure applications
• Broad media compatibility safely handles air, natural gas, oil, steam, and water across multiple industrial systems
• Universal flange compatibility with Class 300/600 flanges enables flexible integration into existing piping networks
• Regulatory compliance assurance meets REACH and RoHS 3 standards for environmental and workplace safety requirements

Professional Applications & Engineering Value

This 4" Schedule 80 black-coated steel threaded pipe nipple delivers critical engineering solutions for industrial fluid systems. The seamless construction combined with NPT threading creates a robust connection point that withstands thermal expansion, pressure surges, and mechanical stress in air, natural gas, oil, steam, and water applications. The black-coated steel surface provides an additional protective layer against corrosion in harsh environments, while the thick-wall design (0.337" wall thickness) ensures structural integrity under high-pressure conditions. Engineered to meet ASTM A106/A53 specifications, this fully threaded pipe nipple serves as a reliable component in processing plants, power generation facilities, and industrial piping networks where leak prevention and long-term durability are paramount.

Specification Summary & Compliance

This threaded pipe nipple features precision NPT threads manufactured to ASME B1.20.1 standards, ensuring proper engagement and sealing compatibility. The product complies with ASTM A106 and ASTM A53 material specifications for pressure piping applications, with dimensional accuracy maintained through controlled manufacturing processes. Regulatory compliance includes full adherence to REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) directives, confirming environmental safety and restricted substance management. The combination of 4" pipe size with Schedule 80 wall thickness provides optimal pressure rating performance for industrial systems requiring 300/600 flange class compatibility.