S-4457K252 4.026" ID x 4 1/2" OD x 20" Long ASME B1.20.1, ASTM A53, ASTM A733 Standard-Wall Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-coated steel construction for extended service life in harsh industrial environments
• Reliable welded construction ensures leak-proof performance under high-pressure applications with air, gas, oil, steam, and water
• Precision NPT threading on both ends provides secure, standardized connections compatible with Class 125 and 150 iron/steel fittings
• Heavy-duty Schedule 40 wall thickness (0.237") delivers exceptional structural integrity for demanding fluid transfer systems
• Full compliance with ASME B1.20.1, ASTM A53, and ASTM A733 standards guarantees dimensional accuracy and material consistency
• RoHS 3 and REACH compliant construction meets international environmental and safety regulations for industrial use
• Versatile 4" diameter with 20" length offers flexible installation options across multiple piping configurations

Professional Applications & Engineering Value

This heavy-duty 4" NPT threaded steel pipe nipple solves critical challenges in industrial fluid systems where reliability under pressure is paramount. The black-coated steel construction combined with welded manufacturing creates a robust barrier against corrosion and mechanical stress, particularly in applications handling air, natural gas, oil, steam, and water. The precision NPT threading ensures leak-resistant connections that maintain integrity across thermal cycling and vibration. Engineered to Schedule 40 specifications with standardized dimensions, this nipple eliminates compatibility issues while providing the wall thickness necessary for high-pressure industrial environments. Its compliance with major industry standards makes it ideal for maintenance, repair, and OEM applications where failure is not an option.

Specification Summary & Compliance

This 4" NPT threaded pipe nipple features precision threading conforming to ASME B1.20.1 standards with Schedule 40 dimensions (4.026" ID, 4 1/2" OD, 0.237" wall thickness). Manufactured from black-coated steel meeting ASTM A53 and ASTM A733 material specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. The 20" length with threaded both ends design ensures compatibility with Class 125 and 150 iron and steel fittings across industrial piping systems.