Pass Boxes Services for Industrial Projects
Basic Description
Sagiant Piping Industries manufactures static and dynamic pass boxes for cleanroom material transfer — fabricated in stainless steel 304/316 with interlocking double doors, toughened-glass view panels and door interlocks that prevent both doors opening together. Dynamic pass boxes add HEPA H14 filtration and UV options to maintain cleanliness during transfer, built to ISO 14644 and EU/cGMP practice with mechanical or electromagnetic interlocking, coved internal corners and stainless hardware.
Pass box types, materials, sizes and GMP reference data
Static and dynamic pass boxes for cleanroom material transfer. Sagiant Piping Industries / SPI Steel keeps pass-box types, construction materials, sizes, standards and HEPA data on one page for cleanroom teams.
Technical Specification
| Parameter | Specification |
|---|---|
| Product Type | Static & dynamic (HEPA) pass boxes |
| Material | Stainless steel 304 / 316, fully welded & polished |
| Doors | Double interlocking doors with toughened-glass view panels |
| Interlock | Mechanical or electromagnetic; prevents simultaneous opening |
| Dynamic Filtration | HEPA H14 (99.995% per EN 1822) with blower; optional UV germicidal |
| Indicators | Status lights, magnetic gasket sealing |
| Mounting | Flush / surface; bench or floor-mounted |
| Finish | SS No.4 / mirror, coved internal corners, passivated |
Construction Materials
| Material | Grade / Spec | Typical Use | Finish |
|---|---|---|---|
| Stainless steel | 304 / 316 (ASTM A240) | Door leaf, frame, pass-box & air-shower body | Brushed No.4 / 2B, passivated |
| Pre-coated GI (PCGI) | ASTM A653 + paint, 0.5–0.8 mm skin | Panel & door skins | Polyester-coated (any RAL) |
| Galvanized / CRCA steel | IS 277 / A653, IS 513 / A1008 | Door leaf, frame, sub-frame | Powder coated |
| Insulation core | PUF / PIR / EPS / rockwool / honeycomb | Panel & door core | Foamed-in / bonded |
| Aluminium | 6063-T5 extrusion | Coving, framing, glazing beads | Anodized / powder coated |
| Glazing | Toughened / laminated / ceramic fire glass | Vision panels & view windows | Clear / wired |
Pass Box Types
| Type | Description | Typical Use |
|---|---|---|
| Static pass box | Interlocked doors, no airflow | Adjacent same-class rooms |
| Dynamic pass box | HEPA-filtered laminar flow | Different-class rooms / higher grade |
| UV pass box | Static / dynamic + UV germicidal lamp | Surface decontamination of items |
| Floor-mounted pass box | Large trolley / equipment transfer | Bulk material movement |
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Cleanliness class | ISO 14644-1, EU GMP Annex 1, WHO / cGMP, Schedule M |
| Filtration (dynamic) | HEPA H14 per EN 1822 |
| Construction & hygiene | Welded, coved, cleanable SS GMP design |
| Material | ASTM A240 / A480 (SS 304 / 316) |
| Finish | SS No.4 / mirror, passivated |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| Interlock function | Door interlock & status-light operation test |
| HEPA integrity (dynamic) | Filter integrity / DOP-PAO test per ISO 14644-3 |
| Dimensional | Chamber size, door fit & gasket-line check |
| Material / weld | Weld visual, polish & passivation check |
| Documentation | GA drawing, HEPA certificate (dynamic), dispatch list |
Applications & Industries Served
Available Forms, Sizes & Range
Share item size, room classes either side and static / dynamic requirement for selection.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Bench-top pass box | 450 x 450 x 450 to 600 x 600 x 600 mm | SS 304 / 316 | ISO 14644 / GMP |
| Floor pass box | Up to 1000 x 1000 x 1800 mm | SS 304 / 316 | ISO 14644 / GMP |
Frequently Asked Questions
What is the difference between a static and dynamic pass box?
A static pass box transfers items between rooms of the same class via interlocked doors; a dynamic pass box adds HEPA-filtered airflow to maintain cleanliness when transferring between different classes.
How does the door interlock work?
Mechanical or electromagnetic interlocks ensure only one door can open at a time, preserving the pressure cascade and preventing cross-contamination.
What HEPA grade is used in dynamic pass boxes?
H14 HEPA filters (99.995% at MPPS per EN 1822), with optional UV germicidal lamps for surface decontamination.
What material are pass boxes made from?
Fully welded stainless steel 304 or 316 with coved internal corners and a No.4 or mirror-polished, passivated finish.
What sizes are available?
From 450 mm bench-top units to 1000 x 1000 x 1800 mm floor-mounted boxes for trolleys and equipment.
Scope of Work
The pass boxes scope can include project review, fabrication support, dimensional coordination, inspection documentation and dispatch support for industrial installations.
Applications
For related project work, review Custom Fabrication, Contact Sales or for technical assistance.
Types of Products
| Type | Description |
|---|---|
| Fabricated Assemblies | Built as per drawing and site requirement |
| Sheet Metal Products | Doors, dampers, diffusers and HVAC items |
| Tanks / Skids | Prefabricated tanks and supporting assemblies |
| Custom Items | Project-specific metal fabrication |
Available Forms
Related Pages
From requirement to dispatch
A drawing-led, inspection-backed process for engineered and fabricated supply — the same discipline on every project.
- 01
Requirement Review
Drawing, BOQ, specification and project scope reviewed to confirm feasibility.
- 02
Design & Specification
Material, method, tolerance and finish aligned to the applicable standard.
- 03
Fabrication Planning
Production planned with inspection and test points built into the sequence.
- 04
Inspection & QA
Dimensional and visual inspection against drawing, with documentation as required.
- 05
Packing & Dispatch
Tagging, packing and dispatch documentation for on-time project delivery.
Frequently Asked Questions
What materials does Sagiant Piping Industries supply?
Sagiant Piping Industries can supply stainless steel, carbon steel, alloy steel, duplex, super duplex and nickel alloy products subject to project requirement.
Do you provide MTC and test certificates?
MTC, test certificates, heat number traceability and inspection documents can be coordinated based on the material, standard and project scope.
Can Sagiant supply as per project BOQ?
Yes. The team can review BOQs, line lists, drawings and specifications to support pipes, fittings, flanges, fasteners and fabricated items.
Do you support third-party inspection?
Third-party inspection, PMI and dimensional inspection support can be arranged when required by the enquiry or project documentation.
Can you work from drawings or site requirements?
Engineering and fabrication enquiries can be reviewed from drawings, BOQs, approved samples or project specifications.
Do you provide custom fabrication services for industrial projects?
Custom fabrication support is available for industrial assemblies, tanks, duct accessories, clean room items and project-specific metal works.
A controlled path from requirement to delivery support
A technical RFQ flow built for engineers, QA teams and project buyers who need clear standards, traceability and dispatch documentation.
Requirement Submission
Share product, grade, size, class, quantity, drawing and delivery location.
Technical Review
Review standards, specifications, missing inputs and service conditions.
Material Selection
Align stainless, carbon, alloy, duplex, titanium or nickel alloy grades.
Quotation & Approval
Confirm commercial scope, documents, inspection needs and timelines.
Production / Sourcing
Coordinate manufacturing, stock sourcing or fabrication as per scope.
Quality Inspection
Manage dimensional checks, MTC review, PMI or third-party inspection.
Dispatch & Documentation
Prepare packing, tagging, test certificates and dispatch documents.
Delivery Support
Support delivery coordination, document handover and project closure.
Find the right product path
Choose what you need and jump directly to the correct product, material or engineering section.
304/L, 316/L, 321, 347 and 904L for corrosion-resistant piping, fittings, flanges and fabrication.
View stainless steelASTM A106, A53, A105, API 5L and IS 2062 for pressure, utility and structural supply.
View carbon steelUNS S31803, S32205, S32750 and S32760 for chloride, offshore and desalination service.
View duplex gradesInconel, Monel, Hastelloy, Incoloy and Nickel 200/201 for severe corrosion and heat service.
View nickel alloys