Grilles Services for Industrial Projects
Basic Description
Sagiant Piping Industries supplies air grilles and registers for supply and return air — single and double deflection grilles, egg-crate return grilles, linear bar grilles, fixed-blade grilles, door/transfer grilles and floor grilles — in extruded aluminium, powder-coated steel and stainless steel 304/316. Grilles are made to SMACNA, AMCA and ASHRAE practice with adjustable horizontal/vertical deflection, optional opposed-blade dampers, gang-operated cores and any RAL or anodized finish, supplied with airflow performance data and project documentation.
Grille & register types, materials, sizes and air-performance reference data
Supply and return air grilles and registers for HVAC and ventilation. Sagiant Piping Industries / SPI Steel keeps grille types, construction materials, sizes, standards and performance data on one page for consultants, contractors and QA teams.
Technical Specification
| Parameter | Specification |
|---|---|
| Product Type | Supply/return grilles, registers, egg-crate, linear bar, door & floor grilles |
| Material | Extruded aluminium 6063, GI / CRCA, SS 304 / 316 |
| Deflection | Single or double; individually adjustable horizontal & vertical blades |
| Damper Option | Opposed-blade damper (OBD), gang-operated from the face (register) |
| Fixing | Screw-on (visible), concealed clip, or spring / lever lock |
| Border | Flanged (15–35 mm) or flat for plaster / ceiling |
| Finish | Powder coated (any RAL), anodized, mill or stainless finish |
| Documentation | Selection sheet, GA drawing, finish record, dispatch list |
Construction Materials
| Material | Grade / Spec | Typical Use | Finish |
|---|---|---|---|
| Extruded aluminium | 6063-T5 | Face, frame, blades & bars | Powder coated / anodized |
| Aluminium sheet | 1100 / 3003 | Cones, back pan, plenum | Powder coated / mill |
| Galvanized steel (GI) | IS 277 / ASTM A653, Z180–Z275 | Plenum box, frame, blades | Pre-galvanized / powder coated |
| Cold-rolled steel (CRCA) | IS 513 / ASTM A1008 | Frames, damper blades | Powder coated |
| Stainless steel | 304 / 316 (ASTM A240) | Cleanroom, kitchen, corrosive areas | 2B / brushed (No.4) |
Grille / Register Types
| Type | Description | Typical Use |
|---|---|---|
| Single deflection grille | One set of adjustable blades | Supply/return where one-plane throw is enough |
| Double deflection grille | Two blade sets (horizontal + vertical) | Side-wall supply needing 2-way throw control |
| Register (grille + OBD) | Grille with opposed-blade damper | Supply/return with volume control |
| Egg-crate grille | 1/2" x 1/2" core, high free area | Return & exhaust, false ceiling |
| Linear bar grille | 0° / 15° / 30° fixed bars | Sills, floors, perimeter, architectural |
| Door / transfer grille | Sight-proof inverted-V blades | Door & partition air transfer |
| Floor grille | Heavy-gauge roll-formed / extruded | Floor-level supply/return, foot traffic |
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Air performance & rating | AMCA 210 / 500-D, AMCA 511 certified ratings |
| Duct & sheet construction | SMACNA HVAC Duct Construction Standards |
| Design & ventilation | ASHRAE Handbook, ISHRAE, Eurovent |
| Material | ASTM A240 (SS), A653 (GI), A1008 (CRCA), aluminium 6063 |
| Finish / coating | Powder coat, ASTM B117 salt-spray, anodizing |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| Airflow / pressure | AMCA 500-D test; throw, NC & pressure-drop selection data |
| Finish | Coating thickness (DFT), adhesion, ASTM B117 salt-spray |
| Dimensional | Face size, blade & core pitch, border & squareness |
| Material | EN 10204 2.2 / 3.1 mill certificate on request |
| Inspection | Sample approval, GA drawing sign-off, dispatch checklist |
Applications & Industries Served
Available Forms, Sizes & Range
Share airflow (CMH/CFM), wall/ceiling type and whether a damper (register) is required for exact selection.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Supply / return grille | 150 x 150 to 1200 x 600 mm | Extruded aluminium | SMACNA / AMCA |
| Egg-crate grille | To 1500 x 1500 mm (jointed) | Aluminium core | SMACNA |
| Linear bar grille | Length to 3000 mm/section | Extruded aluminium | SMACNA / Eurovent |
Frequently Asked Questions
What is the difference between single and double deflection grilles?
Single deflection has one set of adjustable blades (one-plane throw); double deflection adds a second perpendicular set for full horizontal and vertical air-pattern control.
Can grilles be supplied with volume control dampers?
Yes — an opposed-blade damper (OBD) can be fitted behind the grille and adjusted through the face; this is called a register.
Which material should I choose?
Extruded aluminium is standard; powder-coated GI/CRCA suits economy projects and stainless 304/316 suits cleanrooms, kitchens and coastal or corrosive areas.
What free area do egg-crate grilles offer?
Egg-crate cores give high free area (typically 90%+), making them ideal for return and exhaust applications.
What finishes are available?
Powder coating in any RAL shade, anodized aluminium, mill finish or stainless 2B/brushed.
Scope of Work
The grilles 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