S-9157K81 4.026" ID x 4 1/2" OD x 3 1/2" Long ASTM A312, ASTM A733, ASME B1.20.1 Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Superior corrosion resistance with 304/304L stainless steel construction, ideal for harsh environments involving air, natural gas, oil, steam, and water.
• Reliable pressure handling designed for Class 150 service, ensuring safe operation in demanding industrial fluid systems.
• Versatile connection options with NPT threaded end and butt weld/socket connect, providing flexible installation for various piping configurations.
• Precision threading compliance with ASME B1.20.1 standard, guaranteeing leak-resistant seals and easy assembly in threaded applications.
• Enhanced durability and strength from Schedule 40 wall thickness and welded construction, offering long-term performance under high-stress conditions.
• Broad industry applicability meeting ASTM A312 and A733 specifications, suitable for oil, gas, steam, and water systems with consistent reliability.
• Environmental and safety compliance with RoHS 3 standards, ensuring safe use in regulated industries without hazardous substances.

Professional Applications & Engineering Value

This 4" Schedule 40 stainless steel threaded pipe nipple is engineered to address common industrial challenges such as corrosion, high pressure, and thermal stress in fluid transport systems. Constructed from 304/304L stainless steel, it provides excellent resistance to oxidation and chemical attack, making it ideal for air, natural gas, oil, steam, and water applications. The combination of NPT threading on one end and butt weld or socket connect options allows for secure, leak-free joints that simplify maintenance and reduce downtime. Its Class 150 rating and robust Schedule 40 design ensure reliable performance in demanding environments, from petrochemical plants to HVAC systems, enhancing system integrity and operational efficiency.

Specification Summary & Compliance

This product adheres to ASTM A312 and A733 for material and manufacturing standards, with NPT threading conforming to ASME B1.20.1 for precise fit and leak resistance. Dimensions include a 4" pipe size, Schedule 40 wall thickness of 0.237", and length of 3 1/2", ensuring accurate integration into industrial systems. It is RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for safe use across various sectors.