Bioprocessing Equipment Tubing
Stainless steel tubing manufactured to the ASME BPE standard for biopharmaceutical, pharmaceutical and biotechnology applications.
A standard that governs more than the tube
ASME BPE, developed by the American Society of Mechanical Engineers, governs equipment design, materials, fabrication, inspection, cleaning, sanitisation, testing and certification for high-purity process systems. BPE tubing is the piping element of that system.
The primary grade is 316L stainless steel to ASTM A269 TP316L, with EN 1.4404 as the European equivalent. Sulphur content is deliberately controlled between 0.005% and 0.017% because it is critical to consistent orbital weld penetration.
The standard designates six surface finish grades across mechanical polishing and electropolishing. SF1 mechanical and SF4 electropolished are the most widely used. Every tube is boroscope inspected for pits, nicks, inclusions and cracks.
Built for validated systems
Weldability by design
Controlled sulphur chemistry gives predictable orbital weld penetration on site.
Defined finishes
Six graded finishes remove ambiguity between supplier and validation engineer.
Documented inspection
Boroscope examination of the bore, recorded per lot.
System-level standard
Covers design, fabrication, cleaning, sanitisation, testing and certification.
| Finish type | Grade | Surface roughness (Ra) | Description |
|---|---|---|---|
| Mechanical polishing | SF0 | — | Coarsest finish |
| Mechanical polishing | SF1 | ≤ 20 Ra (0.51 µm) | Most common, default mechanical finish |
| Mechanical polishing | SF2 | — | Intermediate |
| Mechanical polishing | SF3 | — | Finest mechanical |
| Electropolishing | SF4 | ≤ 15 Ra (0.38 µm) + EP | Most common EP, default electropolished |
| Electropolishing | SF5 | — | Enhanced EP |
| Electropolishing | SF6 | — | Finest EP finish |
Where BPE tubing is used
What to send us for a firm quote
The more of this we have up front, the faster the quotation and the fewer clarifications later. Partial enquiries are welcome — we will tell you what else the specification needs.
Send an enquiryBioprocessing Equipment Tubing — common questions
Why is sulphur content controlled in BPE tubing?
Sulphur between 0.005 and 0.017 per cent is critical for consistent orbital weld penetration on site, which is why ASME BPE specifies it.
Which BPE finishes are most used?
SF1, the default mechanical finish at 20 Ra or better, and SF4, the default electropolished finish at 15 Ra or better plus EP.
What inspection does BPE tubing receive?
Boroscope visual inspection of the bore for pits, nicks, inclusions and cracks, in addition to standard dimensional and pressure checks.
Does ASME BPE cover more than the tube?
Yes. It governs equipment design, materials, fabrication, inspection, cleaning, sanitisation, testing and certification for high-purity process systems.
Enquire about Bioprocessing Equipment Tubing
Send grade, OD, wall, length, standard and finish for a firm quotation.