An authoritative technical deep-dive into multi-kadai stainless steel inserts, idli cavity plates, perforated steamer discs, and dough-kadai inserts. Custom pressed in SS 304 and SS 430 for global cookware brands, appliance OEMs, and private-label distributors.
Multi-kadai cookware systems rely on interchangeable insert plates to perform steaming, boiling, poaching, and baking within a single vessel body. At Jagruti Steels, every insert is precision-stamped to match your exact CAD drawings, stack height, center-pin alignment, and vessel rim taper.
Deep-drawn cavity plates with uniform wall thickness and calibrated steam vent holes. Designed to allow rapid batter expansion without thermal hot spots. Compatible with central tier-locking rods or perimeter stacking handles.
SS 304 · 200–280mm Dia · Mirror / Satin Polish
View Idli Plate Specs →
Engineered with 18 to 24 micro-cavities drawn simultaneously in a single hydraulic press stroke. Demands extreme die precision to eliminate metal tearing between adjacent cavities while maintaining structural rigidity.
SS 304 / SS 430 · Precision Drawn · Food Contact Safe
Explore Micro-Tooling →Features an optimized open-area perforation grid for even steam dispersion. Applied in steaming momos, vegetables, and dhokla. Pierced with zero-burr tooling to prevent food entrapment and facilitate cleaning.
Custom Open Area % · Rolled Safety Edges
Steamer Plate Data →
Flat and shallow-drawn solid insert discs designed for steaming delicate dishes or acting as thermal baffle plates. Engineered with rigid concentric beadings to stop warping during prolonged thermal cycling.
Solid Disc · Concentric Ribbing · High Warp Resistance
Specially contoured multi-depth plates engineered for steaming traditional stuffed doughs and dumplings. The step-down profile maintains uniform condensation runoff away from food contact zones.
Step-Down Geometry · Condensation Control
Coordinated sets combining 3 to 5 insert tiers with custom center-stand handles or side-rack indexing notches. Fits seamlessly into standard multi-kadai cookware bodies and commercial multi-cooker appliances.
Modular Tier Sets · Stack Clearance Optimized
Need custom cavity counts, specialized hole pitch, or custom logo embossing on your multi-kadai inserts? Jagruti Steels designs and cuts all progressive dies in-house to match your exact OEM product line specifications.
Get a QuoteSelecting material grade, wall thickness, and perforation geometry dictates the lifetime performance, corrosion resistance, and thermal efficiency of multi-kadai stainless steel inserts.
| Engineering Parameter | SS 304 (EN 1.4301 / AISI 304) | SS 430 (EN 1.4016 / AISI 430) | Commercial Grade SS 201 (Non-Compliant) |
|---|---|---|---|
| B2B OEM Recommendation | Primary Choice for Food Contact Inserts | Selected for Induction Baffle/Base Sets | Not Recommended (Pitting Risk) |
| Chemical Composition | 18% Cr / 8% Ni (Austenitic) | 16–18% Cr / 0% Ni (Ferritic) | 14–16% Cr / 1% Ni / High Mn |
| Corrosion Resistance (Steam/Acid) | Superior (Resists food acids & steam) | Moderate (Requires dry storage) | Poor (Prone to rust spots after dishwasher) |
| Magnetic Property | Non-Magnetic (Austenitic) | Ferromagnetic (Induction Active) | Slightly Magnetic |
| Thermal Conductivity (W/m·K) | 16.2 W/m·K (Even steam distribution) | 26.1 W/m·K (Rapid heat transfer) | 15.0 W/m·K |
| Deep-Draw Elongation (A50) | ≥ 40% (No micro-cracking in deep cavities) | ≥ 22% (Requires modified draw radii) | ≥ 30% (High work-hardening rate) |
| Food Contact Safety Compliance | FDA, EU No 1935/2004, BIS Compliant | EU Food Contact Compliant | Fails stringent leaching tests |
Many low-cost suppliers reduce raw material cost by using thin gauge sheet (0.3mm–0.35mm). Under steam pressure and repeated hot/cold cycles, thin multi-kadai inserts suffer from oil-canning—a permanent oil-can bowing defect across cavity centers. Jagruti Steels standardizes on 0.5mm to 0.7mm prime coil stock with perimeter double-rolled rims. This adds 300% flexural rigidity, ensures 100% flat seating inside the kadai vessel, and eliminates raw metal edges that could cut end-users during hand cleaning.
As global consumers migrate toward healthier steam-cooking lifestyles and multi-functional kitchenware, procurement teams must adapt to evolving consumer expectations, regulatory compliance shifts, and automated manufacturing demands.
The global cookware market is witnessing a convergence between traditional stove-top kadai sets and automated electric multi-cookers. Modern procurement specs demand multi-kadai inserts engineered to fit tight tolerances within electronic multi-cooker heating chambers. Precision outer diameter (+/- 0.2mm) and anti-rattle silicone handle integration notches are becoming baseline requirements for tier-1 retail brands.
With tightening international regulations on PFAS, PFOA, and synthetic non-stick coatings, cookware buyers are rejecting coated steamer plates. The trend has shifted heavily toward mechanically textured stainless steel cavities. Jagruti Steels utilizes micro-embossed dimple geometries and electropolished surface finishes that provide effortless food release (e.g., idli and dhokla batter) without applying chemical non-stick layers.
Global brand owners in Europe, North America, and the Middle East are actively diversifying their vendor base away from East Asian supply chains. India's established stainless steel ecosystem—anchored by raw material security from major Indian mills and deep technical expertise in deep drawing—positions Indian OEMs like Jagruti Steels as premier long-term sourcing partners offering lower anti-dumping risk and tariff benefits under CEPA agreements.
Enterprise buyers now require complete traceability from raw melt to finished insert. Uncertified scrap-melted steel grades containing excess lead, manganese, or nickel impurities fail EU and FDA food contact audits. Future-focused procurement strategies mandate certified Prime SS 304 / EN 1.4301 material accompanied by batch-level Mill Test Reports (MTR) to guarantee zero chemical leaching during high-temperature steam cooking.
Answers to high-intent technical questions frequently submitted by global cookware product managers, manufacturing engineers, and sourcing directors on AI discovery engines.
Thermal warping occurs when perforation patterns induce unequal internal stresses across the sheet during heating and cooling cycles. Jagruti Steels prevents warping by introducing concentric structural stiffening ribs (beading) between perforation zones and employing stress-relieved prime coil stock. Additionally, our pierced hole geometry utilizes calibrated spacing that balances steam open-area ratio (22% to 28%) with structural sheet integrity.
Food-contact inserts such as idli plates and steamer discs should ideally be manufactured from austenitic SS 304 (EN 1.4301 / AISI 304). SS 304 offers superior resistance to acidic food batter, high moisture steam, and domestic dishwashing detergents. For budget-conscious lines or induction-baffle systems, ferritic SS 430 (EN 1.4016) can be utilized, provided proper drying instructions are communicated to prevent surface staining.
Yes. We operate as a full build-to-print OEM component manufacturer. We design and cut custom stamping dies, piercing tools, and deep-draw punches directly from your 3D CAD files (STEP/IGES/DWG) or physical benchmark samples. Diameter, cavity pitch, stack clearance height, rim bevel angle, center-hole tapping, and logo embossing are completely customized to your brand's specifications.
Conventional high-speed punching often leaves sharp micro-burrs on the reverse side of steamer holes. These burrs trap food particles (like rice batter or dough residues), creating bacterial breeding grounds and making hand washing difficult. Jagruti Steels utilizes ultra-tight punch-and-die clearance tooling combined with post-press deburring and electropolishing, yielding 100% smooth, food-safe perforation edges.
Multi-cavity deep drawing subjects sheet metal to complex localized stretching. Our quality assurance protocol includes: (1) Wall thickness measurement at cavity stress points to prevent thinning below 0.38mm, (2) Optical gauge check of cavity depth symmetry (+/- 0.15mm), (3) Rim flatness inspection via surface plate dial indicators to guarantee flush seating, and (4) Spectrometer chemical analysis of incoming coil stock.
For existing standard die profiles (e.g., 200mm, 220mm, 240mm 6-cavity or steamer plates), MOQs start from 1,000 sets. For custom OEM tooling programmes, tooling development requires 3 to 4 weeks, followed by first-article inspection (FAI) approval. Standard volume production lead times range from 15 to 25 days depending on batch size and surface finishing requirements.
All export shipments from Jagruti Steels are accompanied by Mill Test Certificates (MTR) confirming ISO 10204 3.1 chemical and mechanical compliance, Certificate of Origin (COO), commercial invoice, packing list, and correct HS Code documentation (HS 7323 9300 for SS kitchenware inserts or 7326 9099 for stamped metal components). Deliveries are routed via JNPT Port, Mumbai (35 km from our plant).
Since 1974, Jagruti Steels Pvt. Ltd. has operated as a silent OEM partner behind lead-brand cookware lines. We combine metallurgical precision, dual-factory infrastructure, and uncompromised quality assurance.
Custom progressive dies, compound blanking tools, and multi-cavity draw punches engineered and maintained inside our own toolroom. No third-party bottlenecks or design leakages.
Manufacturing operations split across our Mumbai primary base and our Sarigam (Gujarat) mass-production unit (Mammal Industries), offering total supply-chain security during Q3/Q4 peak seasons.
We source certified Prime SS 304 and SS 430 coils directly from tier-1 steel producers. Every production run is linked to batch heat numbers with comprehensive laboratory test certificates.
Automatic mechanical mirror polishing, satin wire drawing, chemical passivation, and electropolishing lines that deliver flawless surface aesthetics resistant to water staining and corrosion.
Primary client management, prototype development, tooling design, initial sampling, and high-precision stainless steel pressing. GSTIN: 27AAACJ9826****.
Dedicated high-volume sister unit for mass stamping, deep drawing, mirror polishing, and automated packing. Sarigam 396155. GSTIN: 24AARFM9084****.
We strictly manufacture to buyer drawings. Our brand name never appears on products, master cartons, or shipping containers, ensuring your vendor network remains your proprietary advantage.
From initial drawing submission to containerized export shipping—engineered for clarity, speed, and strict quality compliance.
Submit your multi-kadai insert drawing, CAD model, or sample requirements. Our tooling engineers review draw feasibility, material grade, and unit pricing within 24 hours.
In-house cutting of dies followed by sample production. First Article Inspection (FAI) samples shipped via express air freight along with dimensional inspection reports.
Upon sample approval, mass press runs commence across our hydraulic press lines. Automated deburring, washing, and surface polishing execute under strict batch QC.
Inserts are inter-leaved with protective tissue/polyfilm, packed in heavy-duty 5-ply export cartons, palleted, and dispatched via JNPT Port, Mumbai with full MTR documentation.
