Steel wardrobes (adjustable type)-Specification
1992 Edition

Overview of Scope

• Defines criteria for adjustable steel wardrobes including materials, dimensions, construction, and finishing.
• Applicable to wardrobes both with and without integrated lockers.
• Includes steel sheet components (Clause 8.1).
• Aluminium tubing must adhere to IS 1285:1975 standards (Clause 3.1).
• Purchasers must provide technical details upon order placement (Clause 9.1).
• Test result rounding follows IS 2:1960 guidelines.

Summary Table:

Additional Information:

• Annex A lists associated Indian Standards essential for compliance.
• Paint testing has been excluded, now governed by standalone paint standards.

This section ensures uniform design and quality for steel wardrobes under this standard.

Summary of References and Key Standards in IS 3497

Purpose: Details materials, dimensions, fabrication, and finishing for adjustable steel wardrobes.

Important Reference IS Codes (Annex A):

Notes:

• Rounding of test results adheres to IS 2:1960.
• Wardrobes may bear BIS Standard Mark under Clause 11.1.1.
• BIS oversees inspection, testing, and quality control.
• First issued in 1966, revised in 1978 with updates on dimensions, tolerances, and paint testing.

Welding and Paint Related Reference Table:

Summary of Material Specifications in IS 3497

1. Steel Sheet Components (Clause 8.1)

• Must comply with IS 513:1986 or IS 1079:1988 for mild steel.
• Thicknesses and mechanical properties specified by these standards.
• Surface finish and corrosion resistance tailored to purchaser's requirements.

2. Aluminium Tubes (Clause 3.1)

• Aluminium tubes conform to IS 1285:1975 with designations 62400, 63400, or 65032.
• Standards specify chemical composition, mechanical properties, and dimensional tolerances.

3. Mild Steel Sheets (Clause 3.3)

• Compliance required to IS 1079:1988 or IS 513:1986.
• Typical properties include:
  • Yield strength ~250 MPa
  • Tensile strength ~410-550 MPa
  • Thickness ranging from 0.5 mm to 3 mm

4. Numerical Rounding (Clause 9.1)

• Values rounded as per IS 2:1960.
• Significant figures consistent with specified values.

Reference Table: Material Standards

flowchart LR
    A[Order Received] --> B[Purchaser Provides Technical Data (Clause 9.1)]
    B --> C[Material Selection]
    C --> D[Aluminium Tubes per IS 1285]
    C --> E[Mild Steel Sheets per IS 513/1079]
    D & E --> F[Manufacturing per IS 3497]

Note: For complete mechanical properties and dimensions refer to each cited IS standard.

Dimensions and Permissible Deviations for Adjustable Steel Wardrobes per IS 3497

Primary Dimensions (Clause 4.1)

Minimum Clearance Requirements for Installation

Additional Notes:

• Screws must comply with IS 1365:1978.
• Deviations beyond ±5 mm are not acceptable.
• Width is customizable based on purchaser and manufacturer agreement.
• Clearances facilitate proper fitting within recesses.

Summary:

• Height: 1980 ±5 mm
• Depth: 480 or 610 ±5 mm
• Width: As agreed ±5 mm
• Installation clearances: Top 20 mm, Sides 10 mm, Depth 5 mm

This ensures standardized sizing and ease of installation in typical environments.

Fabrication and Component Specifications as per IS 3497

1. Sheet Steel Components (Clause 8.1)

• Steel sheets must comply with relevant IS standards regarding thickness, strength, and finish.
• Typical panel thickness ranges between 0.8 mm and 1.2 mm.
• Components include doors, shelves, and locker units, all requiring corrosion-resistant coatings such as powder coating.

2. Aluminium Tubes (Clause 3.1)

• Tubes must meet IS 1285:1975 standards with designations 62400, 63400, or 65032.
• Commonly used for wardrobe frames or support rods.
• Aluminium tubing needs adequate strength and corrosion resistance.

3. Technical Data from Purchaser (Clause 9.1)

• Required details include dimensions, material preferences, finishing options, and intended load or usage.

4. Rounding Off (IS 2:1960)

• Final calculations and test results must be rounded to the prescribed significant figures.

Typical Materials and Component Thickness Table

graph TD
    A[Steel Wardrobe] --> B[Sheet Steel Components]
    A --> C[Aluminium Tubes]
    B --> D[Body Panels]
    B --> E[Doors]
    B --> F[Lockers]
    C --> G[Support Rods]

For detailed parameters, consult IS 3497 and IS 1285.

Assembly Procedures for Steel Wardrobes as per IS 3497

• Clause 6.1: Components are assembled by either bolting or welding.
• Clause 8.1: Sheet steel parts must be joined according to standard specifications.
• Screws and bolts must adhere to IS 1365:1978 regarding dimensions and mechanical properties.
• Technical specifications provided by the purchaser govern assembly dimensions and tolerances (Clause 9.1).
• Rounding of test results follows IS 2:1960 rules.

Assembly Methods Overview:

Important Points:

• Ensure precise alignment and tight fitting before assembly.
• Use correct fasteners in size and grade.
• Welding must avoid distortion and maintain structural integrity.

flowchart LR
    A[Sheet Steel Components] --> B{Select Assembly Method}
    B --> C[Bolting (IS 1365)]
    B --> D[Welding (IS 816 / IS 9595)]
    C --> E[Screws and bolts per IS 1365]
    D --> F[Welding quality and finish]

For welding procedures and bolt sizes, refer to IS 816 and IS 1365 respectively.

Optional Accessories for Steel Wardrobes as per IS 3497

Specifications (Clause 7)

• Mirror Frame:

  • Constructed from metal sheet with minimum thickness of 0.8 mm.
  • Features a 25 mm bent border.
  • Attached to the left-side door externally using screws.

• Mirror:

  • Minimum thickness of 5 mm.
  • Dimensions of 1250 mm by 300 mm, compliant with IS 6184:1971.

Welding Standards for Accessories (Clause 6.2)

• Gas welding: IS 1323:1982.
• Arc welding: IS 816:1969.
• Spot welding: IS 819:1957.

Additional Details

• Finishing colours must be mutually agreed upon by purchaser and manufacturer (Clause 8.2).
• Purchaser must specify required accessories during ordering (Clause 9).

Rounding of Numerical Values (Clause 9.1)

• Follow IS 2:1960 for rounding to appropriate significant figures.

flowchart TD
    A[Order Placement] --> B{Are Accessories Needed?}
    B -->|Yes| C[Specify Mirrors, Shelves, Etc.]
    B -->|No| D[Standard Wardrobe]
    C --> E[Manufacture With Specified Accessories]
    D --> E
    E --> F[Packaging and Shipping]

This guarantees appropriate accessory integration in accordance with IS 3497.

Surface Treatment and Finish Requirements for Steel Wardrobes (IS 3497)

Key Processes (Clauses 8.1 to 8.1.2)

• Surface Preparation (8.1.1):

  • Remove dents, burrs, and sharp edges.
  • Pickle, scrub, and rinse to remove grease, rust, scale, and contaminants.

• Phosphating Treatment (8.1.2):

  • Apply immediately after pickling.
  • Treatment must comply with Class C of IS 3618:1966.
  • Application procedures follow IS 6005:1970.
  • Purpose: To improve paint adhesion and corrosion resistance.

• Filler and Primer Application:

  • Use filler as per IS 110:1983 where required.
  • Aluminium primer applied according to IS 5660:1970.

Surface Treatment Summary Table

flowchart LR
    A[Steel Component] --> B[Remove dents/burrs]
    B --> C[Pickling, scrubbing, rinsing]
    C --> D[Phosphating treatment (IS 3618 Class C)]
    D --> E[Filler application (IS 110)]
    E --> F[Aluminium primer (IS 5660)]
    F --> G[Ready for paint/finish]

Note: Adhering to this sequence is critical for optimal durability and paint performance.

Purchaser's Data Requirements per IS 3497 (Clause 9)

When ordering adjustable steel wardrobes, the purchaser must provide:

• Whether a locker is required.
• The exact number of adjustable shelves.
• Desired finish colour.
• List of accessories needed such as mirrors, hanging rods, tie hangers.
• Any alternative construction or finishing methods if different from the standard.

Additional Instructions:

• Components must be packed securely to prevent damage during transit.
• Test and calculation values should be rounded following IS 2:1960.
• Mirrors must conform to IS 6184:1971:
  • Thickness minimum 5 mm.
  • Size 1250 mm × 300 mm.
• Mirror frame must be metal sheet with thickness ≥0.8 mm, have a 25 mm border, and be fixed on the left door.

This ensures clear communication and conformity to IS 3497 requirements.

flowchart LR
    A[Purchaser Order] --> B{Information to Provide}
    B --> C[Locker Needed?]
    B --> D[Number of Shelves]
    B --> E[Finish Colour]
    B --> F[Accessories (Mirrors, Rods, etc.)]
    B --> G[Alternative Construction/Finishes]
    B --> H[Packaging Instructions]

Packaging Specifications under IS 3497

• Clause 8.1 & 3.1:

  • Sheet steel parts and aluminium tubes (IS 1285:1975, designations 62400, 63400, or 65032) must conform to their respective standards.

• Clause 8.2:

  • All other components must have colour finishes agreed upon by purchaser and manufacturer.

• Clause 9:

  • Purchaser specifies locker requirements, number of shelves, finish colour, accessories, and any alternative construction or finishing methods.

• Packaging:

  • All components should be packed securely to prevent transit damage.

Packaging Summary Table

flowchart TD
    A[Order Confirmed] --> B[Purchaser Provides Details]
    B --> C{Components}
    C --> D[Sheet Steel Parts]
    C --> E[Aluminium Tubes (IS 1285)]
    C --> F[Other Components]
    D & E & F --> G[Colour Finish as Per Agreement]
    G --> H[Packaging]
    H --> I[Damage-Proof Packing for Transit]

In brief: IS 3497 mandates compliance with material standards, purchaser specifications, and secure packaging to maintain quality during shipment.

Marking Requirements for Steel Wardrobes as per IS 3497

Key Points (Clause 11.1 & 11.1.1)

• All steel wardrobes must bear a manufacturer's identification mark.
• Optionally, wardrobes may display the BIS Standard Mark indicating compliance with IS 3497 and BIS oversight.
• The Standard Mark confirms:
  • Production under strict inspection, testing, and quality control.
  • Ongoing conformity checks by BIS.
• BIS licenses the use of the Standard Mark under the BIS Act, 1986.

Marking Specifications:

• Manufacturer’s mark must be clear, durable, and legible.
• Marking may include:
  • Manufacturer’s name or logo.
  • The IS code number (IS 3497).
  • Optional batch or production codes.

Reference Table

Additional Remarks:

• Marking ensures traceability and quality assurance.
• Paint and finishing standards (IS 110, IS 151) govern marking durability.

flowchart TD
    A[Steel Wardrobe] --> B[Apply Manufacturer ID Mark]
    B --> C{Include BIS Standard Mark?}
    C -->|Yes| D[Apply BIS Mark]
    C -->|No| E[Only Manufacturer Mark]
    D --> F[Ensures Quality & Compliance]
    E --> F

Summary: All steel wardrobes must have a manufacturer’s mark; BIS Standard Mark is optionally applied to signify certified quality.