S-7750K399 4.026" ID x 4 1/2" OD x 36" Long ASME B1.20.1, ASTM A53, ASTM A733 Standard-Wall Steel Threaded Pipe Nipples and Pipe
Standard-Wall Steel Threaded Pipe Nipples and Pipe
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Basic Information
Connection Parameters
Dimension Parameters
Material & Accessories Parameters
Installation Parameters
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Key Features & Benefits at a Glance
- Enhanced corrosion resistance with black-coated steel construction for prolonged service life in demanding environments
- Reliable leak-proof connections through precision NPT threading ensuring secure fittings for high-pressure systems
- Superior structural integrity from welded construction and Schedule 40 wall thickness (0.237") handling industrial fluid pressures
- Versatile multi-medium compatibility for air, natural gas, oil, steam, and water applications with iron/steel fittings
- Standardized dimensional accuracy per ASME B1.20.1 and ASTM specifications for seamless integration with Class 125/150 flanges
- Regulatory compliance assurance meeting REACH and RoHS 3 environmental standards for global industrial use
- Time-saving installation with threaded × butt weld/socket connect options reducing assembly labor in piping systems
Professional Applications & Engineering Value
This black-coated steel threaded pipe nipple delivers critical performance in industrial fluid handling systems where corrosion resistance and pressure integrity are paramount. The welded construction combined with Schedule 40 wall thickness (0.237") provides exceptional burst strength for steam, oil, and gas applications, while the NPT threaded end ensures pressure-tight seals with standard iron/steel fittings. Engineers specify this 36-inch adapter for its ability to maintain system integrity across thermal cycling and mechanical stress, reducing maintenance intervals in chemical processing, power generation, and industrial plumbing systems. The black coating extends service life in humid or corrosive environments, making it ideal for both indoor and outdoor installations where environmental compliance (REACH/RoHS 3) is required.
Specification Summary & Compliance
Manufactured to ASME B1.20.1 for NPT thread form and dimensional tolerances, with material compliance to ASTM A53 and ASTM A733 specifications. The 4" pipe size features 4.026" ID and 4 1/2" OD with Class 125/150 flange compatibility. Full compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives ensures suitability for regulated industrial markets.
