Seamless Stainless Steel Stub Ends ASME B16.9
The Seamless Stainless Steel Stub Ends ASME B16.9 are hygienic grade pipe fittings designed for food, beverage and pharmaceutical processing lines. Manufactured from seamless SS304 and SS316L pipe with a mirror polished surface finish, these stub ends provide the smooth, crevice-free surfaces required for sanitary applications.
Because the fittings are seamless, there are no weld seams inside the bore where product could accumulate and breed bacteria. The mirror polished interior with roughness below Ra 0.8 microns allows complete drainage and easy cleaning, meeting the strict hygiene standards of the food industry. Manufactured to ASME B16.9 dimensions, these food grade stub ends pair perfectly with lap joint flanges, enabling fast disassembly for inspection and sanitation.
| Standard | ASME B16.9 |
|---|---|
| Construction | Seamless |
| Material Grade | SS304, SS316L |
| Surface Finish | Mirror Polished, Ra Less Than 0.8 um |
| Size Range | 1/2 Inch to 24 Inch |
| Wall Thickness | Sch10S to Sch160 |
| Connection Type | Butt Weld |
| Certification | ISO 9001:2015, FDA Compliant Material |
- Seamless construction eliminates internal crevices and bacteria traps
- Mirror polished surface below Ra 0.8 microns for hygienic cleaning
- SS316L option provides superior resistance to acidic food products
- Complete drainage design prevents product retention
- Fast disassembly with lap joint flanges for routine sanitation
- FDA compliant material grades suitable for food contact
- Full material certificates with each batch
- Food processing and packaging lines
- Beverage and dairy production plants
- Pharmaceutical and biotech process piping
- Brewery and distillery systems
- Clean in place (CIP) installations
Hygienic applications demand rigorous quality control. Our seamless stainless steel stub ends are produced from food grade material with certified chemical composition, and the polishing process is verified with surface roughness measurement. Each fitting is inspected for internal surface quality, dimensional accuracy and weld preparation.
Our facility operates under ISO 9001:2015, and material certificates confirm FDA compliance for food contact applications. With 15 years of experience supplying hygienic pipe fittings to the food and beverage industry, we understand the importance of surface quality, cleanability and full documentation.
Our production team combines advanced pipe forming technology with rigorous process control to deliver seamless fittings that meet the expectations of international food and beverage manufacturers. Every order is supported by responsive communication, clear documentation and reliable delivery schedules.
We welcome sample orders so that your quality team can verify the surface finish and dimensional accuracy firsthand before volume procurement.
A: Seamless stub ends have no longitudinal weld seam inside the bore, eliminating crevices where food residue and bacteria could accumulate. This makes cleaning and sanitation much more effective.
A: Our standard hygienic finish is mirror polished with surface roughness below Ra 0.8 microns. Finer finishes such as Ra 0.4 microns can be provided for pharmaceutical applications.
A: Yes, SS304 is FDA compliant and widely used in food processing. For acidic or chloride containing food products, SS316L provides better corrosion resistance and is recommended.
A: Yes. The smooth mirror polished bore and seamless construction make these stub ends fully compatible with clean in place systems, allowing effective cleaning without disassembly of the pipeline.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.