Products +
MNPTxMNPT Shaded-dimension Details +

Male NPT – Male NPT 316 SS 20Ra Sanitary Spools:

  • 1.5” Diameter (view other available diameters)
  • Tubing and Fittings meet 3A Sanitary Standards and ASME BPE Standards
  • Tubing and Fittings are BPE, 3A, ASME, and ASTM Industry Standard Compliant
  • Tubing meets ASTM A269/A270
  • Surface Finish options – Measured per ASME/ANSI B46.1 requirements: SFF1 – Mechanical polish 20 Ra ID / 32 Ra OD
  • Hygienic and Cleanable
  • Option documentation for Full Traceability back to the original stainless steel supplier

Our Sanitary Spools in 316 Stainless Steel are ideal for:

  • Biotechnology and Pharmaceutical Industries: Product Contact Piping, Vents and Exhaust Piping, Drain Piping, CIP Piping, Steam Piping
  • Food, Dairy, Brewing, Healthcare, Chemical, and other Heavy Industries: Product Piping, Vents and Exhaust Piping, Drain Pipings, RO/DI Water Piping

316 SS Male NPT – Male NPT 1.5″


We expertly weld our male NPT sanitary spools with state-of-the-art equipment and ship them directly to customers. With more than 30 years of industry experience as process piping contractors, our team can organize accurate, detailed test documentation for the spools including FDA, MTR, and passivation.

Product Add-ons

Available Add-Ons and Documentation:

Passivation: Select passivation to receive a passivation report that includes the duration for which parts were in the passivation solution, passivation type (citric), PH level of passivation solution, and rinse media.

FDA Documentation: When you select FDA documentation for your sanitary spool(s), you’ll receive Material Test Reports, Material Pre-Inspection Reports (wall thickness verification, ovality check, surface finish quality control), Weld Logs, and a Final Weld Inspection certification by a certified weld inspector.

MTR Documentation: Material Test Reports are included in this option, but do not include FDA documentation. FDA documentation cannot be added retroactively.

Please Note: If you do not choose a documentation selection, HPS will provide a packing slip that confirms your order and product details.

Additional information

Weight 1.5755 lbs
Dimensions 72 × 5 × 5 in
(C) Carbon, max


(Mn) Manganese, max


(P) Phosphorus, max


(S) Sulphur, A270-S2

0.005 – 0.017

(Si) Silicon, max


(Ni) Nickel

10.0 – 14.0

(Cr) Chromium

16.0 – 18.0

(Mo) Molybdenum

2.0 – 3.0