Precision Stamping & CNC Bending Hub

L Patti & Heavy Duty L Bracket Manufacturer Mumbai | Aero Enterprises

Unit I Vasai Phata manufactures premium stamped sheet metal components. Engineered with springback compensation, progressive die capabilities, and finished in our automated 7-tank powder-coating facility.

ISO 9001:2015 MSME Registered Pan-India Logistics
B2B Quick ConsoleMade to Order - 5 to 7 Days Lead Time
Standard Size Range25x25mm, 40x40mm, 50x50mm, 65x65mm, 75x75mm, 100x100mm arm lengths. Asymmetric and custom sizes per drawing.
HSN Code7326 (Stamping / Fabricated Parts)
Avg. B2B Pricing₹8 / piece

Component USP Summary

Heavy duty l bracket steel with ±0.1mm hole tolerance, true 90 degree CNC bend accuracy, and zinc or 7-tank powder coat. Bulk OEM supply packaged in 25kg gunny bags.

OEM Stamped Part
L Patti Corner Bracket - Heavy Duty L Bracket Hardware

What Is L Patti Steel / Heavy Duty L Bracket Hardware

L patti is the common Indian trade name for an L-shaped right-angle corner bracket made from sheet metal or rolled steel. The same component is referred to as an l angle, heavy duty l bracket, l profile patti, or corner angle bracket depending on the industry. In furniture manufacturing, l patti steel brackets are the primary joining hardware for tables, racks, and shelving frames. In industrial fabrication, l angle brackets are used for panel reinforcement, cable tray supports, and enclosure stiffening. The critical performance requirement across all these applications is the same: the two arms of the l patti must form a true 90 degrees within tight angular tolerance, the hole centres must be consistent, and the bend must not open up under repeated load cycles. At Aero's Unit I, l patti brackets are formed on our CNC press brake with springback compensation dialled in per material grade and thickness.

B2B Custom Production Timeline

Aero Enterprises shop floor schedule Vasai

Unit I Production Floor
01

DFM Review & CAD

Drawings imported to CNC program, checking sheet gauge, bend allowance, and tonnage calculations.

02

Laser / Die Stamping

For prototype runs, blanking is completed on our 3000W fiber laser. High volumes move to progressive mechanical dies.

03

CNC Bending

Formed on press brakes (100T/3100mm) using calculated springback compensation per material batch.

04

7-Tank Powder Coat

Alkaline degreasing, hot phosphating, and UV-stable polyester top coat at 60-80 microns DFT.

Engineering Data Matrix

Standard Size / OD Range25x25mm, 40x40mm, 50x50mm, 65x65mm, 75x75mm, 100x100mm arm lengths. Asymmetric and custom sizes per drawing.
base materialMS IS 2062 E250A / GI IS 277 / SS 304 IS 6911
thickness range1.2mm to 3.0mm
standard sizes25x25mm, 40x40mm, 50x50mm, 65x65mm, 75x75mm, 100x100mm arm lengths
asymmetric sizesAvailable per drawing, e.g. 50x75mm, 40x65mm for offset l angle requirements
bend angle90 degrees ±0.5 degrees CNC press brake with springback compensation per grade
hole tolerance±0.1mm centre-to-centre for consistent bolt alignment
hole sizesM4, M5, M6, M8, M10 standard. Round clearance holes or elongated slotted holes for adjustable rack mounting.
packagingStandard OEM bulk packing in 25kg/50kg gunny bags or corrugated cartons for pan-India transit.
surface finish optionsElectrostatic powder coat (7-tank pretreatment) or zinc electroplate per specification
powder coat dft60 to 80 microns flat, 50 microns minimum on radii and hole edges
adhesion standardClass 5B cross-hatch adhesion on every batch
standard coloursBlack (RAL 9005), Grey (RAL 7035), White (RAL 9003), Zinc silver. Custom RAL on request.
lead time5 to 7 working days standard size existing tooling. 8 to 12 days custom size new tooling.

Class Thickness & Mass Reference

Class / Thickness25x25mm - 1.2mm MS L Bracket Clamps
Est. Weight0.004 to 0.005 kg (0.009 to 0.011 lbs)
Class / Thickness40x40mm - 1.5mm MS L Shape Angle Bracket
Est. Weight0.009 to 0.011 kg (0.020 to 0.024 lbs)
Class / Thickness50x50mm - 2.0mm Heavy Duty Metal L Brackets
Est. Weight0.018 to 0.022 kg (0.040 to 0.049 lbs)
Class / Thickness65x65mm - 2.0mm Industrial L Shaped Steel Bracket
Est. Weight0.028 to 0.034 kg (0.062 to 0.075 lbs)
Class / Thickness75x75mm - 2.5mm Structural L Support Bracket
Est. Weight0.042 to 0.050 kg (0.093 to 0.110 lbs)
Class / Thickness100x100mm - 3.0mm OEM Corner Angle Bracket
Est. Weight0.080 to 0.095 kg (0.176 to 0.209 lbs)

Standard L Patti vs Custom L Angle - What You Should Order

Standard l patti steel sizes from 25mm to 100mm arm length are the fastest to produce because tooling is already available on Aero's press floor. If your rack design uses industry-standard hole spacing and equal-arm l angle geometry, you will get faster delivery on standard configurations. Custom l profile patti and asymmetric l angle brackets with non-standard arm lengths, offset hole patterns, or deep notches at the bend require new die setup. This adds 3 to 5 days to the first batch lead time but produces a heavy duty l bracket that fits your product exactly.

HSN & Commercial Billing Policy

Fabricated sheet metal l patti steel and l angle corner brackets fall under HSN Code 7326 (other articles of iron or steel, fabricated and stamped). GST rate is 18 percent. This applies to MS, GI, and SS 304 l profile patti and l angle brackets as finished fabricated components. All Aero Enterprises invoices include correct HSN classification and GSTIN 27AGCPK5633K1Z9.

Applications for L Patti Steel and L Angle Brackets

Furniture joints for tables, chairs, wardrobes, and office workstations, the primary use of l clamp for wood in India
Industrial storage rack and shelving frame connections in warehouses requiring heavy duty l bracket reinforcement
Panel-to-frame joints in electrical enclosures and control cabinet construction using l profile patti stiffeners
Machine guarding and safety barrier structural connections in factory automation
Cable tray and cable management mounting brackets requiring l patti steel for conduit support
Wall-mounted shelving and hanging hardware for office and retail applications
Stationery product hardware including document holder frames and rack structural connectors
Structural gusset brackets for lightweight steel frame construction using l shaped steel bracket sections
Agricultural and outdoor equipment frame joints requiring GI-grade l patti corrosion protection

Standard Grades Capability

MS IS 2062 E250A - Standard L Patti Steel

Most common grade for l patti hardware in furniture, racks, and indoor industrial applications. Economical, strong for load-bearing l angle joints, and takes powder coat and zinc plate cleanly. Available in 1.2mm to 3.0mm thickness.

GI IS 277 120 GSM - Outdoor L Angle

For outdoor, agricultural, and moisture-exposed l patti applications where bare-metal corrosion resistance is needed. The 120 GSM zinc layer provides 15 to 20 years outdoor protection independent of topcoat.

SS 304 IS 6911 - Stainless L Profile Patti

For stainless ss l patti hardware in commercial kitchen fixtures, hygiene-critical industrial frames, bathroom fittings, and export-quality furniture requiring a corrosion-free finish surface.

Active Delivery & Logistics Coverage

Aero Enterprises delivers mill-certified fabricated items from Unit II Dhumal Nagar across active hubs in Maharashtra and pan-India.

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Horizontal Production Capabilities

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FLOOD LIGHT CRADLE / MOUNTING BRACKET

OEM-grade LED light mounting brackets stamped, CNC bent (±0.5°), and powder coated at Unit I Vasai. Springback-compensated U-form. UV-stable outdoor powder coat.

Saddle U Clamp - Stamped Sheet Metal Pipe Saddle Support Clamp

SADDLE CLAMP / PIPE SADDLE CLAMP / HEAVY DUTY GI PIPE CLAMP / U CLAMP FOR PIPE

Springback-compensated stamping dies deliver true circumferential arc alignment within ±0.3mm of nominal pipe outer diameter. Complete wall contact prevents flange failure under heavy wind or dynamic fluid loads.

Wall Unit Document Holder Bracket - Sheet Metal Fabricated

WALL UNIT DOCUMENT HOLDER BRACKET / SOP HOLDER / WALL MOUNT FILE FOLDER FRAME

Sheet metal wall unit document holder brackets with ±0.2mm A4/A5 slot tolerance, fully deburred internal edges, and 7-tank powder coat finish. OEM batch manufacturer in Vasai for stationery hardware and factory SOP display assemblers.

Spoiler Clamp – Sheet Metal Auto Accessory Bracket

CAR SPOILER CLAMP / UNIVERSAL CAR SPOILER CLAMP / AUTO ACCESSORY BRACKET

Vibration-resistant car spoiler clamps stamped and CNC bent in Vasai. 1.2–3.0mm MS/GI with ±0.5° angular precision for universal and vehicle-specific rattle-free fitment, sealed with a 7-tank powder coating.

Material Strength & Engineering Tolerances

base material
MS IS 2062 / GI IS 277 / SS 304
product names
L patti steel, heavy duty l bracket, l angle bracket, l profile patti, corner angle bracket
thickness range mm
1.2 to 3.0
standard arm lengths
25, 40, 50, 65, 75, 100mm
bend angle
90 degrees ±0.5 degrees
hole tolerance
±0.1mm
surface finish
Powder coat / Zinc plate
coating dft
60 to 80 microns
adhesion
Class 5B cross-hatch
lead time
5 to 7 days standard, 8 to 12 days custom tooling
Engineering Resource

Technical Procurement: l patti corner bracket furniture manufacturing aero enterprises

Master the procurement variables for L Patti Corner Bracket - Heavy Duty L Bracket Hardware. Review our engineering team's deep dive into manufacturing aero enterprises.

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Technical Q&A

Verified Procurement Intelligence

What is L patti and what is the difference between l patti steel, l profile patti, and a heavy duty l bracket?
L patti, l profile patti, and heavy duty l bracket all refer to the same L-shaped right-angle bracket used to connect two structural members at a 90-degree joint. The different names reflect different trade contexts: l patti is the common hardware name in India; heavy duty l bracket is the engineering term; l profile patti is used in the stainless steel hardware segment. We manufacture all of these as stamped components in MS IS 2062, GI IS 277, and SS 304.
What l angle bracket sizes do you manufacture?
Standard l angle bracket sizes available from Aero Enterprises Unit I Vasai are 25x25mm, 40x40mm, 50x50mm, 65x65mm, 75x75mm, and 100x100mm, with thickness 1.2mm to 3.0mm depending on the load requirement. Asymmetric l angle brackets with unequal arm lengths (e.g. 50x75mm) and custom l profile patti with non-standard hole patterns are available from new tooling.
Can you manufacture L patti angle brackets with slotted holes for adjustable racks?
Yes. For industrial storage racks, slotted angle shelving, and adjustable furniture frames, we stamp L patti brackets with elongated slotted holes. This provides the installer with 10mm to 15mm of lateral or vertical adjustment during assembly to ensure racks sit perfectly level on uneven factory floors. Specify slotted holes on your drawing when requesting a quote.
What is the correct l patti thickness for furniture joints?
For standard furniture joints on tables, chairs, and racks, 1.5mm MS l patti steel at 40x40mm or 50x50mm is the correct specification. For heavy-duty industrial furniture and steel rack structures carrying above 80kg per shelf, 2.0mm MS l angle at 50x50mm or 65x65mm is required. For lightweight stationery hardware, 1.2mm CR l profile patti at 25x25mm provides adequate stiffness.
What surface finish options are available for l patti hardware?
Electrostatic powder coat over 7-tank zinc phosphate pretreatment is the standard finish for indoor industrial l patti steel brackets, applied at 60 to 80 microns DFT. Available colours: black RAL 9005, grey RAL 7035, white RAL 9003, and zinc silver. GI IS 277 base material is used for l angle brackets in outdoor applications needing zinc-layer protection without paint.
Can l patti steel be used for outdoor applications?
MS IS 2062 l patti with powder coat is adequate for sheltered outdoor applications. For fully exposed heavy duty l bracket installations like outdoor rack structures or solar frame corner joints, GI IS 277 l profile patti is the correct specification. The zinc layer in GI at 120 GSM provides corrosion protection independent of paint for approximately 15 to 20 years.
Can you supply l patti hardware with countersunk holes?
Yes. Countersunk holes for flat-head screws are available in M4, M5, and M6 on both arms of the l shaped steel bracket. Standard countersink angle is 90 degrees. Countersunk l patti hardware is commonly used in furniture applications where the screw head must sit flush with the bracket surface to avoid contact damage to the furniture panel.
What is the minimum order quantity for l patti corner brackets?
For standard l angle bracket sizes using existing tooling, minimum order is 200 pieces. For custom l angle sizes with new die setup, minimum first batch is 500 pieces to amortise tooling cost. We package bulk OEM orders in 25kg or 50kg gunny bags for secure transit across Maharashtra.
Do you supply l profile patti in stainless steel for kitchen applications?
Yes. SS 304 ss l patti brackets are available for commercial kitchen fixtures, food processing equipment frames, and hygiene-critical hardware. SS 304 l patti is supplied with a natural 2B finish or brushed finish depending on specification. Specify SS grade only where the application genuinely requires it.
How does Aero Enterprises ensure 90-degree accuracy in l patti steel manufacturing?
At Aero Unit I, l patti corner brackets are formed on a CNC press brake with springback compensation programmed per material grade and thickness. Without compensation, an l patti steel bracket formed to 90 degrees in the die will open to 91 to 93 degrees after the press releases. Aero's CNC press brake overbends by the calculated springback angle so the final released angle is exactly 90 degrees.

Related Metal Specifications

Bending & Forming ServicesFurniture Component HardwareFabricated Products Catalog

Get a Quote for Heavy Duty L Bracket Hardware

Share your l patti size, arm length, thickness, hole pattern (round or slotted), material grade, and batch quantity. We provide a fabrication quote within 24 hours with per-piece pricing, tooling cost if applicable, and lead time.

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Mill Test Certificates (MTC) Available Upon Request