Description

Stainless Steel Floor Drain Covers and Gratings – Manufacturer & Exporter India

Stainless Steel Fittings India manufactures precision stainless steel floor drain covers, grating covers, trench drain grates, channel drain covers, square drain covers, linear drain grates, anti-slip floor gratings, and pressed drain strainer plates in SS 201, SS 304, SS 316, SS 316L, and SS 430 grades. Manufactured by pressing, perforating, laser cutting, CNC bending, and TIG welding of stainless steel sheet and bar, our drain covers and gratings serve food processing plants, pharmaceutical facilities, commercial kitchens, hospitals, breweries, dairies, chemical plants, and industrial wash-down floors. Price: US$ 11.60/Kilogram.

Product Overview

Stainless steel floor drain covers and gratings are structural drainage components that simultaneously allow liquid passage, retain solids, support floor traffic loads, and provide cleanable hygienic surfaces in wet processing environments. Unlike cast iron or galvanised steel drain covers, SS 304 and SS 316 drain gratings resist corrosion from food acids, cleaning chemicals (caustic soda, chlorine, peracetic acid), and high-temperature steam washdowns — making them the material of choice in GMP-regulated food and pharmaceutical facilities and in chemical process plants with aggressive drainage chemistries.

SS Square & Round Floor Drain Covers

Square, rectangular, and round stainless steel floor drain covers, drain grates, access covers, gully grating covers, and drain frame-and-grating assemblies are pressed and fabricated from SS 304 and SS 316 sheet in thicknesses from 1.5 mm to 6 mm. Standard sizes from 100×100 mm to 500×500 mm and custom sizes to drawing. Slot patterns, round perforations, hexagonal perforations, and bar grating patterns provide open areas from 25% to 60% depending on drainage capacity requirements. Anti-slip embossed surfaces, raised edges, and recessed top-flush designs are available for both surface-mounted and flush-floor installations.

SS Trench Drain Grates & Channel Drain Covers

Linear trench drain grates, channel drain covers, corridor drain grating sections, and modular drain channel frames with SS grating inserts are press-bent and TIG-welded from SS 304 and SS 316 for food factory floors, pharmaceutical cleanrooms, brewery floors, abattoir drainage, commercial kitchen drainage channels, and hospital corridor drains. Standard widths from 100 mm to 400 mm in 100 mm increments; lengths to 1200 mm per section with modular bolted assembly for longer runs. Heel-proof slot patterns (slot width ≤ 8 mm per EN 1253) prevent heel-catch injuries in public and commercial food-service areas.

Hygienic Floor Drain Covers for Food & Pharmaceutical

EHEDG-compliant and 3-A Sanitary Standard hygienic SS drain covers for food processing, dairy, beverage, and pharmaceutical facilities are manufactured with crevice-free welded frames, electropolished surfaces, and no horizontal ledges for bacterial retention. Internal grating surfaces achieve Ra < 0.8 μm per EHEDG design guidelines. SS 316L is standard for pharmaceutical cleanroom drains and dairy CIP (Clean-in-Place) drainage systems where chloride-containing cleaning agents demand higher pitting resistance than SS 304. Fully removable grating inserts allow cleaning of drain channels without tools.

Heavy-Duty SS Gratings for Industrial & Chemical Floors

Heavy-duty stainless steel bar gratings, pressed steel gratings, load-bearing drain covers, and forklift-rated drain grating panels are manufactured from SS 304 and SS 316 flat bar and sheet for chemical plant floors, offshore platform decks, industrial wash-down areas, wastewater treatment facilities, and petrochemical secondary containment areas. Load ratings from A15 (pedestrian) to D400 (heavy vehicle) per EN 124 are achievable with appropriate bar size and spacing specifications. Non-slip serrated bar grating and checker-plate perforated grating are available for high-traction safety requirements.

SS Anti-Slip Floor Drain Covers & Access Plates

Anti-slip stainless steel floor drain access covers, manhole covers, inspection pit covers, sump covers, and drainage access plates with checker-plate or diamond-pattern pressed surfaces are manufactured for industrial floors, food factory aisles, cold store floors, wet processing areas, and public catering kitchens. Pressed checker-plate patterns and laser-cut anti-slip perforations provide CoF (coefficient of friction) > 0.5 wet per slip-resistance testing standards. Recessed handle or lift-point designs allow tool-free removal for drain access without trip hazards when covers are properly seated.

SS Shower & Bathroom Floor Drain Grates

Stainless steel shower drain grates, bathroom floor drain covers, wet room drain plates, hospital shower drain grating, linear shower drain covers, and hair-catcher drain inserts are pressed, perforated, and finished in SS 304 and SS 316 for residential, commercial, and healthcare applications. Tile-height flush designs, square and linear formats, and decorative slot patterns in 304 mirror finish are available for architectural and interior design specifications. Strainer basket inserts below the grate trap hair, debris, and solid particles without blocking the drain opening — a combined function achieved by integrating pressed grating with a deep-drawn strainer cup below.

Custom OEM & Project-Specific Drain Covers

Project-specific stainless steel drain covers, bespoke grating sections, non-standard drain frame assemblies, and custom perforation pattern drain plates are manufactured to architect, consultant, or contractor drawings. Full engineering support for load calculation, drain capacity calculation (open area vs. flow rate), and material selection is available. DXF/DWG/STEP files accepted; prototype fabrication and approval before project production. Export packing with ISPM-15 fumigated wooden crates for EPC project shipments to Middle East, Southeast Asia, Europe, and North America.

Key Features

Full SS grades: 201, 304, 304L, 316, 316L, 430 — selection based on corrosion duty
Hygienic EHEDG-compliant designs with crevice-free welds and Ra < 0.8 μm surfaces
Load ratings A15 to D400 per EN 124 — pedestrian to heavy vehicle
Heel-proof slot patterns (≤ 8 mm) per EN 1253 for commercial kitchens and food areas
Anti-slip checker plate, diamond pattern, and serrated bar grating options
Electropolished finish available: Ra < 0.4 μm for pharmaceutical cleanroom drains
Removable grating inserts for easy clean-in-place (CIP) compliance
Custom sizes and perforation patterns to architect/consultant drawings
NSF 61 and 3-A Sanitary Standards compliant materials available
EN 10204 3.1 MTC with every shipment; ISO 9001:2015 certified

Corrosion Resistance in Chemical Washdown Environments

Food processing and pharmaceutical facilities use aggressive CIP chemicals including sodium hydroxide (2–4%), nitric acid (1–3%), peracetic acid, and sodium hypochlorite at elevated temperatures up to 85°C. SS 316L (molybdenum-bearing grade, PREN > 24) provides superior resistance to chloride pitting and crevice corrosion versus SS 304 in these conditions. Electropolished surfaces further enhance corrosion resistance by removing surface irregularities that act as corrosion initiation sites — passivated and electropolished SS 316L drain covers pass 1000-hour neutral salt spray (NSS) tests per ISO 9227, exceeding the performance of hot-dip galvanised drain covers by a factor of 5–10×.

EHEDG Hygienic Design Compliance

EHEDG (European Hygienic Engineering & Design Group) guidelines for drains in food processing areas require: no dead legs or horizontal ledges where liquid can pond; internal surface Ra < 0.8 μm; full-penetration continuous welds with ground smooth; no open bolt threads exposed to the product zone; and easy disassembly for manual cleaning. Stainless Steel Fittings India’s hygienic drain covers are designed and manufactured to satisfy all EHEDG Guideline Document 10 requirements for drain design in food factories, dairies, breweries, and pharmaceutical production facilities.

Structural Load Capacity

Floor drain covers in industrial and commercial settings must support static and dynamic loads from pedestrian traffic, fork-lift trucks, pallet jacks, and production equipment. Load class selection per EN 124 (A15 = 1.5 kN; B125 = 12.5 kN; C250 = 25 kN; D400 = 40 kN) guides SS grade and section thickness specification. SS 316 plate at 4–6 mm thickness with welded frame achieves D400 heavy-duty ratings for production area floors with fork-lift traffic — significantly lighter than equivalent cast iron drain covers while maintaining full structural performance.

Drainage Flow Capacity & Open Area Design

Drainage capacity is a function of grate open area, hydraulic head, and drain pipe sizing. Our engineering team calculates minimum required open area for specified drainage flow rates (litres per second) using the weir-flow formula and recommends slot pattern, slot width, and grating dimensions accordingly. Standard open areas range from 25% (heavy-load structural covers) to 60% (light-duty drainage gratings). Laser-cut slots and CNC-punched perforations maintain dimensional accuracy of ±0.1 mm across the grating pattern, ensuring consistent open area and drainage performance across production batches.

Installation & Maintenance Features

Stainless steel drain covers are supplied with matching SS 304/316 frames for new construction and as retrofit grating inserts for existing drain frames. Lift handles, recessed pull points, and quarter-turn locking mechanisms allow tool-free removal for periodic cleaning and inspection. Bolted-down options with SS 316 hex socket screws prevent unauthorised removal in public areas. Modular trench drain sections with push-fit assembly allow rapid installation in new food factory builds and minimise installation time in plant refurbishment projects where production downtime is critical.

Surface Finish Options & Aesthetics

Available surface finishes range from 2B mill finish (standard industrial) through No.4 brushed satin (commercial kitchen, food factory) to No.8 mirror polish and electropolished finishes for pharmaceutical cleanrooms and architectural applications. Brushed No.4 finish hides surface scratches from cleaning brushes and floor traffic better than mirror finish, making it the preferred choice for visible drain covers in commercial food service. Bead-blast matte finish provides maximum anti-slip performance while maintaining corrosion resistance — suitable for wet floor areas, cold store entrances, and industrial wash-down zones.

Technical Specifications

Parameter	Specification
Manufacturing Processes	Pressing, CNC Punching/Perforating, Laser Cutting, CNC Bending, TIG Welding
Material Grades	SS 201, 304, 304L, 316, 316L, 430
Sheet Thickness	1.5 mm – 8 mm (cover/grating); frame: 3 mm – 10 mm
Standard Sizes	100×100 mm to 600×600 mm; trench: 100–400 mm wide × up to 1200 mm long
Custom Sizes	To drawing; no extra charge for laser-cut profiles
Open Area	25% – 60% (slot/perforation pattern dependent)
Slot / Hole Size	3 mm – 25 mm (slot width); 1 mm – 20 mm (round hole)
Load Rating	A15 to D400 per EN 124
Surface Finish	2B, No.4, No.8, Electropolished (Ra < 0.4 μm), Passivated, Bead-blast
Hygienic Surface	Ra < 0.8 μm (EHEDG food grade); Ra < 0.4 μm (pharma grade)
Operating Temp.	-196°C to +870°C (SS grade dependent)
Price	US$ 11.60 / Kilogram

Material Grades & International Equivalents

Grade	UNS	EN / W.Nr.	DIN	JIS	BS	AISI
SS 201	S20100	1.4372	X12CrMnNiN17-7-5	SUS 201	—	AISI 201
SS 304	S30400	1.4301	X5CrNi18-10	SUS 304	304S31	AISI 304
SS 304L	S30403	1.4307	X2CrNi18-9	SUS 304L	304S11	AISI 304L
SS 316	S31600	1.4401	X5CrNiMo17-12-2	SUS 316	316S31	AISI 316
SS 316L	S31603	1.4404	X2CrNiMo17-12-2	SUS 316L	316S11	AISI 316L
SS 430	S43000	1.4016	X6Cr17	SUS 430	430S17	AISI 430

Product Types & Variants

Type	Description	Key Applications
Square / Round Drain Cover	Pressed SS cover with slots or perforations	Floor drains, gully covers, access covers
Trench / Channel Drain Grate	Linear SS grating for channel drains	Food factories, commercial kitchens, corridors
Hygienic Drain Cover (EHEDG)	Crevice-free welded, electropolished SS drain	Pharmaceutical, dairy, brewery, food GMP
Heavy-Duty Bar Grating	SS flat bar welded grating for load-bearing	Industrial floors, chemical plants, offshore
Anti-Slip Checker Plate Cover	Pressed checker pattern drain access cover	Wet floors, cold stores, industrial aisles
Shower / Bathroom Drain Grate	Fine-slot or perforated SS shower grate	Residential, hotel, hospital shower rooms
Manhole / Sump Access Cover	Heavy SS plate cover with lift handles	Sump pits, inspection chambers, drain access
Custom Project Drain Covers	To architect/consultant drawings	Bespoke construction and refurbishment projects

Industry Applications

Industry	Application
Food Processing	Factory floor drain grates, slaughter drain covers, wash-down area gratings, CIP drainage covers
Pharmaceutical / Biotech	Cleanroom floor drains, EHEDG-compliant grating, electropolished drain covers, sterile area drainage
Commercial Kitchens	Grease trap gratings, sink area drain covers, kitchen floor trench grates, dishwash area drainage
Brewery / Dairy	Fermentation floor drains, CIP drainage, washdown gratings, mash area drain covers
Hospital / Healthcare	Wet room drain covers, surgical suite drains, sluice room gratings, decontamination area drains
Chemical / Petrochemical	Acid-resistant floor gratings, secondary containment drains, process area drain covers
Residential / Commercial Architecture	Shower drain grates, bathroom linear drains, wet room covers, architectural linear drain systems
Industrial / Offshore	Platform deck gratings, wash-down area covers, chemical containment drains, ATEX-zone drain covers

Manufacturing Process

SS sheet and flat bar stock are received with EN 10204 3.1 MTCs and cut to size on CNC laser cutting machines or shear presses. Grating patterns are CNC-punched or laser-cut with ±0.1 mm positional accuracy. For bar grating types, SS flat bar is welded to SS frame members using TIG welding with full-penetration welds. Press braking forms drain frames and channels to required cross-section profiles. TIG welding joints are ground smooth and linished to eliminate crevices per EHEDG requirements for hygienic designs. Post-fabrication treatment includes pickling and passivation per ASTM A967 for all grades, and electropolishing per ASTM B912 for pharmaceutical and food-grade units. Dimensional inspection, open-area measurement, and surface Ra measurement (electropolished parts) complete the quality process before packing.

Quality Standards & Certifications

ISO 9001:2015 – Quality Management System
EN 1253 – Gullies for Buildings (floor drain standard)
EN 124 – Gully Tops and Manhole Tops — Load Classes A15 to F900
EHEDG Guideline Document 10 – Hygienic design of drains in food factories
3-A Sanitary Standards – Dairy and food equipment
NSF/ANSI 61 – Drinking water system components
ASTM A240 / A480 – Stainless steel sheet and strip
EN 10088-2 – European stainless steel flat products
ASTM A967 – Chemical Passivation of Stainless Steel
ASTM B912 – Electropolishing of Stainless Steel
EN 10204 3.1 – Mill Test Certificates

Why Choose Stainless Steel Fittings India

Full SS grade range: 201, 304, 304L, 316, 316L, 430 — always in stock for rapid delivery
EHEDG-compliant hygienic designs for food, pharmaceutical, and dairy drain applications
Custom sizes, perforation patterns, and frame profiles to architect or consultant drawings
Electropolishing (Ra < 0.4 μm) and passivation in-house for pharma-grade drainage
Load ratings A15 to D400 for pedestrian to heavy vehicle applications
EN 10204 3.1 MTCs and dimensional inspection reports with every shipment
Competitive pricing from US$ 11.60/kg; volume project discounts available
25+ years export experience to USA, UK, UAE, Germany, Australia, Singapore, Canada

Frequently Asked Questions

What SS grade is recommended for food processing drain covers?

SS 316L is recommended for food processing drain covers due to its superior resistance to chloride-containing cleaning agents (CIP chemicals, sodium hypochlorite). SS 304 is acceptable for dry food areas and light washdown. SS 316L with electropolished finish meets EHEDG and 3-A Sanitary Standards for food contact drainage components.

What load class do I need for a food factory floor drain cover?

For pedestrian-only access areas, A15 (1.5 kN) or B125 (12.5 kN) load class is sufficient. For areas with pallet jacks or electric forklifts (up to 2.5 tonnes), C250 (25 kN) class is required. For heavy counter-balance forklifts and loaded vehicles, D400 (40 kN) class is required. Our engineering team provides load class recommendations based on vehicle type and wheel load data.

Can drain covers be supplied with matching drain frames?

Yes. Complete drain assemblies — SS grating insert plus SS frame — are supplied as matched sets for new construction projects. Retrofit grating inserts to fit existing drain frames are also available; please provide existing frame dimensions for accurate sizing.

What is the standard slot width for heel-proof drain grates?

EN 1253 and food industry guidelines require slot widths not exceeding 8 mm in pedestrian areas to prevent heel-catch injuries. Our standard commercial kitchen and food factory drain grates use 6 mm slots — below the 8 mm heel-proof limit — while maintaining adequate drainage open area.

Are electropolished drain covers available for pharmaceutical cleanrooms?

Yes. SS 316L drain covers and trench gratings with electropolished surfaces (Ra < 0.4 μm) are manufactured for ISO Class 5–8 cleanrooms, pharmaceutical GMP production areas, and biotech fermentation facilities. Electropolishing certificates and Ra measurement reports are supplied with each batch.

Can you manufacture to non-standard custom sizes?

Yes. Laser cutting and CNC punching allow any custom grating size and perforation pattern with no dedicated tooling cost. Custom sizes from 50×50 mm to 1200×600 mm are produced from DXF/DWG files submitted by customers. No tooling charges apply for laser-cut custom sizes.

How are SS drain covers cleaned and maintained?

SS 304 and SS 316 drain covers are cleaned with standard alkaline detergents, acid descalers, or chlorinated sanitisers used in CIP systems. Abrasive cleaning pads should be used along the grain direction of brushed (No.4) finishes. Electropolished surfaces are the easiest to clean — soil cannot adhere to the ultra-smooth surface, reducing CIP chemical consumption and cleaning cycle duration.

Do you supply mill test certificates with drain covers?

Yes. EN 10204 3.1 Mill Test Certificates covering chemical composition and mechanical properties of raw SS sheet material are supplied with every order. Dimensional inspection reports and surface Ra measurement records (electropolished parts) are available.

What is the minimum order quantity?

For standard catalogue sizes in SS 304 and SS 316, MOQ is typically 50 kg. For custom laser-cut sizes and project orders, MOQ is 1 piece for prototype and small batch production. Volume project discounts apply for EPC contractor orders above 500 kg per size.

Equivalent Terms in Other Languages

Spanish: Rejilla de suelo en acero inoxidable, Tapa de sumidero inox, Reja de desagüe suelo, Sumidero de acero inoxidable
Russian: Решётка напольного трапа из нержавеющей стали, Крышка канализационного трапа нержавейка, Дренажная решётка нержавеющая, Трап напольный нержавеющий
French: Grille de drain de sol en acier inox, Couvercle de siphon inoxydable, Grille de caniveau inox, Avaloir de sol inox
Portuguese: Grelha de ralo de piso em aço inox, Tampa de ralo inoxidável, Grelha de canaleta, Ralos de inox para piso
Italian: Griglia scarico pavimento in acciaio inox, Coperchio tombino inox, Griglia canalina inossidabile, Piletta a griglia inox

Explore Our Full Range of Stainless Steel Pressed & Stamped Parts

Request a Quote for Stainless Steel Floor Drain Covers and Gratings

Contact Stainless Steel Fittings India for competitive pricing and technical specifications for stainless steel floor drain covers and gratings. Price from US$ 11.60/kg. Standard and custom sizes; hygienic EHEDG designs; load-rated industrial gratings. OEM, EPC, and distributor enquiries from USA, UK, UAE, Germany, Australia, and Southeast Asia are welcome. Contact us with your drawings, specifications, or project requirements for a fast quotation.