1-1/2" Schedule 5 Seamless Pipe 321 Stainless - 4 Foot Length

1-1/2" Schedule 5 Seamless Pipe – 321 Stainless Steel

PNW Sanitary 321 stainless steel Schedule 5 seamless pipe is manufactured for nominal pipe size (NPS) stainless piping systems operating in elevated temperature environments. Produced to ASTM A312 specifications, this pipe is engineered for industrial fabrication, thermal processing systems, exhaust applications, and other installations where enhanced resistance to heat-related corrosion is required.

321 stainless steel is titanium-stabilized to reduce the risk of intergranular corrosion and weld decay in heat-affected zones during sustained high-temperature service or repeated thermal cycling. Schedule 5 wall thickness (approximately 0.065") provides a lightweight solution suited for fabrication projects and industrial assemblies where structural load and pressure demands are moderate.

Seamless construction eliminates internal weld seams, ensuring uniform wall thickness and consistent structural integrity. Pipe is ink-stamped “Ace Race Parts” for manufacturing identification.

Features

• Material: 321 stainless steel (titanium-stabilized)
• Wall thickness: Schedule 5 (approx. 0.065")
• Seamless construction (no internal weld seam)
• Specification: ASTM A312
• Enhanced resistance to heat-related corrosion and weld decay
• Lightweight construction for fabrication efficiency
• Ink-stamped for manufacturer identification

Applications & Compatibility

Commonly used in high-temperature industrial piping, exhaust systems, thermal processing lines, and fabricated stainless assemblies requiring improved resistance to sustained heat exposure. Compatible with standard NPS Schedule 5 stainless butt-weld fittings manufactured to ASME B16.9 dimensions. Not intended for sanitary clamp-style or hygienic ferrule-based systems.

Quality & Material Verification

PNW Sanitary verifies stainless steel pipe through in-house Positive Material Identification (PMI) using the SciAps X-550 handheld XRF spectrometer to confirm alloy chemistry and support material traceability.