Precision Engineered ASME-BPE Tubes & Fittings
Surface perfected for ultra-pure applications
About BioPure
Precision Engineered for High-Purity Industries
Biopure by Rensa is a leading manufacturer of stainless steel tubes and fittings engineered for high-purity industries. With advanced infrastructure and strict adherence to ASME BPE standards, we deliver reliable and precision-based solutions globally.
Why Choose Us
Excellence in Every Detail
Full traceability system
ASME BPE compliance
Short lead times
Eco-conscious manufacturing
High precision finishing
Applications
Industries We Serve
Biopharmaceuticals
ASME BPE SF1/SF4 for bioreactors and process systems.
Vaccines
Ultra-clean single-use compatible transfer lines.
Cell & Gene Therapy
High-purity systems for advanced therapeutics.
Diagnostics
Precision tubing for diagnostic equipment.
Food & Beverage
Hygienic solutions for food processing.
Specifications
Tube & Fitting Specifications
All BioPure tubes and fittings are manufactured to ASME BPE latest edition.
| Parameter | Tubes | Fittings |
|---|---|---|
| Standard | ASME BPE · ASTM A270 S2 | ASME BPE (butt-weld & clamp) |
| Material Grade | 316L-CS (1.4435 · low-S) | 316L-CS (matched grade) |
| Size Range | OD ½″ – 4″ (DN12 – DN100) | ½″ – 4″ (standard & reducing) |
| Surface Finish | ID: BA, SF1, SF4 · OD: Mill / BA | ID: SF1 / SF4 · OD: EP |
| Ra (ID) | ≤ 0.38 µm (SF4) | ≤ 0.38 µm (SF4) |
| Weld Prep | Orbital-weld ready (square-cut) | ASME BPE end tolerances |
| Traceability | Heat number marked, full MTR | Heat number marked, full MTR |
Need a tighter Ra or custom size? We support UHP Ra ≤ 0.25 µm and custom OD/WT on request. Contact us for qualification support.
Surface Finish
ASME BPE Surface Finish Designations
All finishes are profilometer-verified and recorded batch-wise. Cr/Fe oxide ratio checked for EP surfaces.
| Designation | Process | Ra Target (ID) | Typical Application |
|---|---|---|---|
| SF1 | Mechanical polish (ID + OD) | ≤ 0.51 µm | General bioprocessing |
| SF2 | Mechanical + electropolish | ≤ 0.38 µm | Pharma utilities |
| SF4 | Electropolish (ID only) | ≤ 0.38 µm | WFI / Clean steam |
Quality Assurance
QA & Traceability
Every BioPure order is backed by systematic QA checks from raw material receipt to final despatch.
XRF PMI on Every Heat
Positive material identification for every heat number received — alloy composition confirmed before production.
Profilometer Ra / Rz
Surface roughness measured batch-wise and recorded against ASME BPE SF1/SF4 targets.
Weld Bore-Scope Inspection
Orbital weld inspection against ASME BPE Annexe D — visual and bore-scope, every joint.
Full Documentation Pack
MTR, PMI, surface data, weld records and EC number shipped with every order.
Every BioPure order ships with a 3.1 Material Test Report traceable to heat number — chemical composition, mechanical properties and surface finish data included.
Product Range
BioPure Fittings Range
Butt-Weld Fittings
- Elbows 90° / 45°
- Equal & reducing tees
- Concentric reducers
- End caps
Clamp Fittings
- Clamp unions
- Ferrules (ASME BPE)
- Clamp tees & elbows
- Sight glasses
Special Fittings
- Diaphragm valve bodies
- Sample valves
- Inline strainers
- Pulsation dampeners
Custom Fabrication
- Manifolds & headers
- Custom OD / WT
- Electropolished sub-assemblies
- ETO-clean packaging
Request a qualification package
We supply MTRs, PMI records, surface finish data and samples aligned to your URS — reducing NCRs and audit cycles for pharma and biotech customers.