S-4788K128 1.38" ID x 1 21/32" OD x 4" 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
- Universal compatibility with BSPT and NPT threads enables seamless connections between different piping systems
- Corrosion-resistant black-coated steel construction extends service life in demanding industrial environments
- Welded design ensures superior structural integrity and leak-proof performance under pressure
- Multi-medium capability handles air, natural gas, oil, steam, and water applications with reliable performance
- Precision threading to ASME B1.20.1 standards guarantees proper sealing and easy installation
- Heavy-duty Schedule 40 wall thickness provides exceptional durability for high-pressure industrial systems
- Comprehensive compliance with REACH and RoHS 3 ensures environmental responsibility and workplace safety
Professional Applications & Engineering Value
This black-coated steel pipe adapter solves critical interconnection challenges in industrial fluid systems where different thread standards coexist. The dual BSPT × NPT threading eliminates the need for additional adapters when connecting international piping components, reducing potential leak points and installation time. The welded construction maintains structural integrity under thermal cycling and pressure fluctuations common in steam, oil, and gas applications. With its Schedule 40 thickness and corrosion-resistant coating, this adapter provides long-term reliability in chemical processing plants, power generation facilities, and industrial manufacturing systems where air, water, and natural gas transport is critical to operations.
Specification Summary & Compliance
This 1 1/4" pipe adapter features precision Class 2A NPT threads per ASME B1.20.1 specifications with matching BSPT threading. Manufactured from ASTM A53 and ASTM A733 compliant steel with 1.38" ID, 1 21/32" OD, and 0.14" wall thickness. The 4" male-to-male adapter meets 150-class fitting requirements for iron and steel flange systems. Full compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards ensures regulatory acceptance for industrial applications worldwide.
