stainless steel sinks for domestic purposes

IS 13983: Scope and Coordination Sizes Summary

• Scope: Specifies dimensions and coordination sizes for sinks to ensure compatibility with worktops and plumbing.

Key Table: Coordination Sizes (Clause 6.5, Table 1)

Important Notes:

• Dimension c is corrected to 20 mm (from 45 mm).
• Sink bowl sizes are adjusted to 370 mm x 320 mm (from 380 mm x 340 mm).
• Dimensions are minimum unless specified.
• These sizes ensure proper fit and function with standard kitchen worktops.

flowchart LR
    A[Worktop] --> B[Sink]
    B --> C{Dimensions}
    C -->|a| D[380 mm Rectangular / 360 mm Round]
    C -->|b| E[340 mm]
    C -->|c| F[20 mm Edge Thickness]
    C -->|d| G[30 mm Flange Width]
    C -->|e| H[45 mm Clearance]
    C -->|l| I[440/515 mm Max Length]

This ensures standardized sink sizes for ease of installation and interchangeability.

IS 13983 Key Reference Table for Sink Dimensions (Clause 6.5)

Notes:

• Dimensions are minimum unless specified.
• Fig. 1 (renumbered as Fig. 2) illustrates these dimensions.
• These sizes ensure proper coordination between sink and worktop.

This table is essential for specifying sink dimensions per IS 13983 to ensure compatibility and workmanship quality.

IS 13983: Definitions & Key Specifications for Stainless Steel Sinks

Key Definitions (Clause 3.0)

• Defines terms related to sit-on and inset stainless steel sinks for domestic use.
• Specifies sink types, features like tap holes, overflow holes, and surface finishes.
• Compliance with IS 2:1960 for rounding numerical test results.

Coordination Sizes (Clause 6.5, Table 1 & Fig. 1)

Construction & Workmanship (Clause 7.5)

• Specify sink type (set-on/inset), tap hole(s), overflow presence, and surface finish when ordering.
• Material per IS 5522:1992 for stainless steel sheets.

Notes:

• The standard excludes fixing/sealing methods.
• Derived from BS 1244 (Part 2):1988 for metal sinks.
• Dimensions are minimum unless specified otherwise.

flowchart LR
    A[Sink Type] --> B{Set-on or Inset}
    B --> C[Specify Tap Holes]
    B --> D[Specify Overflow Hole]
    B --> E[Specify Surface Finish]
    C & D & E --> F[Order Details]

This summary aids in understanding sink dimensions, ordering parameters, and definitions per IS 13983.

IS 13983: Types of Stainless Steel Sinks - Key Specifications

Types of Sinks (Clause 3.2 & Fig.1)

• Inset Sink: Fits into a worktop aperture, projects only by edge thickness.
• Types:
  • A1 / A2: Single bowl, no drainer
  • B1 / B2: Double bowl, no drainer
  • C: Single bowl, single drainer (right/left)
  • D: Single bowl, double drainer
  • E1 / E2 / E3: Double bowl, single drainer (right/left)
  • F: Double bowl, double drainer

Note: "Hand" refers to drainer position when viewed from front.

Material

• Austenitic stainless steel:
  • Grade X04Cr19Ni9 (304)
  • Grade X07Cr18Ni9 (302)
• Conforming to IS 5522:1992

Dimensional Tolerances (Clause 6.4.3)

• Bowls set minimum 10 mm from gridline (for both single and double bowls).

Ordering Information (Clause 7.5)

• Specify:
  • Sink type (A-F)
  • Set-on or inset
  • Tap hole(s) presence
  • Overflow hole presence
  • Surface finish

Summary Table of Types

flowchart LR
    A[Sink Type] -->|Single bowl no drainer| A1A2
    A -->|Double bowl no drainer| B1B2
    A -->|Single bowl single drainer| C
    A -->|

IS 13983: Materials - Key Specifications and Tables

1. Material Specification

• Stainless steel sheets/strips used must comply with IS 5522:1992 (Stainless steel sheets and strips for utensils).
• Thickness per Clause 6.1: Thickness of sheet/strip is specified but exact values depend on sink type and use.
• Surface finish and technical details (tap holes, overflow holes) must be specified by purchaser (Clauses 7.5, 7.6, 8).

2. Thickness of Sheet/Strip

• Refer to IS 5522 for standard thickness ranges suitable for domestic sinks.
• Typical thickness ranges: 0.6 mm to 1.2 mm depending on sink type.

3. Coordinating Sizes (Clause 6.5, Table 1)

4. Additional Notes

• Final values must be rounded per IS 2:1960 rules.
• Construction and workmanship details are in Clause 7.
• Options for overflow, tap holes, and surface finish must be clearly defined when ordering.

flowchart LR
    A[Material: Stainless Steel Sheet] --> B[Thickness per IS 5522]
    B --> C[Dimensions per Table 1]
    C --> D[Surface finish and holes as per purchaser]
    D --> E[Final product: Domestic stainless steel sink]

This summarizes the materials and dimensional specifications critical for compliance with IS 13983.

IS 13983: Dimensions and Tolerances for Kitchen Sinks

Key Dimensions (Clause 6.5 & Table 1)

Internal Bowl Dimensions (Clause 6.3)

• Rectangular bowl minimum internal size: 380 mm × 340 mm
• Round bowl minimum internal diameter: 360 mm
• Smaller bowls (Type E2, E3) may have reduced internal width per manufacturer's design.

Additional Specifications

• Sheet Thickness (Clause 6.1): As per manufacturer's design, ensuring durability.
• Bowl Locating Limits (Clause 6.4): Defines permissible bowl positioning within the sink.

Summary Diagram (Fig. 1 Reference)

graph TD
    A[a: 380 mm (rectangular) / 360 mm (round)] --> B[b: 340 mm]
    B --> C[c: 20 mm]
    C --> D[d: 30 mm]
    D --> E[e: 45 mm]
    E --> F[l: 440/515 mm max worktop length]

This ensures sinks fit standard worktops and maintain functional bowl sizes with proper tolerances.

IS 13983: Construction and Workmanship Key Points

• Sink Types: Set-on or inset sinks; purchaser must specify type, tap hole(s), overflow hole, and surface finish (Clause 7.5).
• Material: Stainless steel as per IS 5522:1992 (stainless steel sheets for utensils).
• Dimensions: Must comply with Table 1 (Clause 6.5) coordinating sizes relative to sink type (rectangular or round).

Table 1: Coordination Sizes (mm)

Workmanship Specifications:

• Surface finish and tap/overflow holes must be as ordered.
• No fixing/sealing methods specified; left to installer.
• Final test values rounded per IS 2:1960.

flowchart LR
    A[Order Placement] --> B{Specify Sink Type}
    B --> C[Set-on Sink]
    B --> D[Inset Sink]
    B --> E[Tap Hole(s) Required?]
    B --> F[Overflow Hole Required?]
    B --> G[Surface Finish]
    G --> H[Manufacture per IS 13983]
    H --> I[Dimension Check per Table 1]
    I --> J[Final Inspection & Rounding per IS 2]

This ensures compliance with IS 13983 for domestic stainless steel sinks.

IS 13983 - Surface Finish for Stainless Steel Sinks

The standard requires the purchaser to specify the surface finish when ordering (Clause 7.5). While IS 13983 does not provide explicit formulas or detailed tables for surface finish, it refers to workmanship quality and the finish type as a key parameter.

Key Points on Surface Finish:

• Surface finish must be smooth, corrosion-resistant, and suitable for domestic use.
• Common finishes include satin (brushed), mirror (polished), or matte finishes.
• Finish quality affects aesthetics, hygiene, and corrosion resistance.
• Thickness and material quality per IS 5522 also influence final surface finish.

Coordination Sizes (for reference):

Summary:

• Specify surface finish type (e.g., brushed, polished) when ordering.
• Follow IS 5522 for stainless steel sheet quality.
• Ensure workmanship complies with smoothness and corrosion resistance.

flowchart LR
    A[Order Placement] --> B[Specify Sink Type & Dimensions]
    B --> C[Specify Surface Finish]
    C --> D[Manufacturing: Material per IS 5522]
    D --> E[Surface Treatment: Brushed/Polished/Matte]
    E --> F[Final Inspection: Smoothness & Corrosion Resistance]

For detailed surface finish parameters, refer to IS 5522 or relevant stainless steel finishing standards.

IS 13983: Marking and Certification of Sinks

Key Specifications (Clause 9)

• Marking Requirements (Clause 9.1):
  Each sink must be clearly and permanently marked with:

  • Manufacturer's name or identification mark
  • Type and size of the sink
  • Year of manufacture
    This marking should be visible after installation.

• BIS Certification Mark (Clause 9.2 & 9.2.1):
  Sinks may bear the BIS Standard Mark, indicating conformity to IS 13983.

Summary Table for Marking

This ensures traceability, quality assurance, and consumer confidence in sinks conforming to IS 13983.

IS 13983: Inspection and Testing Key Points

The standard IS 13983:1994 (Reaffirmed 2009) primarily deals with sinks, but inspection and testing aspects relate to dimensional accuracy and workmanship.

Inspection & Testing Specifications:

• Dimensional Checks: Verify sink dimensions as per Table 1 (Clause 6.5) against Fig. 1 (renumbered Fig. 2).
• Tolerance for 'e' dimension: Revised from 45 mm to 20 mm.
• Max length 'l':
  • 440 mm for 500 mm worktop
  • 515 mm for 600 mm worktop

Table 1: Coordination Sizes (mm)

Testing Focus:

• Dimensional conformity to above sizes.
• Visual inspection for workmanship (Clause 7).
• Functional tests for leak tightness and drainage (general practice).

flowchart LR
    A[Inspection] --> B{Dimension Check}
    B -->|Pass| C[Workmanship Inspection]
    B -->|Fail| D[Reject or Rework]
    C --> E{Functional Test}
    E -->|Pass| F[Accept]
    E -->|Fail| D

Summary: Ensure sinks meet dimensional limits per Table 1, especially amended 'e' value (20 mm), followed by workmanship and functional testing.

Committee Composition (IS 13983 - Annex A)

The Sanitary Appliances and Water Fittings Sectional Committee, CED 3 comprises:

• Chairman: Shri S Prakash (Delhi Water Supply and Sewage Disposal Undertaking, MCD)

• Members: Representatives from various government bodies, research institutes, industries, and BIS including:

  • Central Public Health and Environmental Engineering (PHE)
  • National Environmental Engineering Research Institute (CSIR)
  • Maharashtra Water Supply and Sewage Board
  • Central Glass and Ceramic Research Institute (CSIR)
  • Municipal Corporations (Bombay, Delhi)
  • National Test House
  • Kerala Water Authority
  • Army Headquarters (Engineer-in-Chief's Branch)
  • Hindustan Shipyard Ltd
  • Institution of Public Health Engineers India
  • Building Material and Technology Promotion Council
  • Kirloksar Brothers Ltd
  • Ministry of Railways
  • Central Building Research Institute
  • Hindustan Sanitaryware Industries Ltd
  • Central Public Works Department
  • Glass Fibre Technology Centre
  • Indian Water Works Association
  • Institution of Engineers (India)
  • Director General, BIS (Ex-officio)

• Subcommittee for Domestic Sanitary Appliances and Accessories, CED 3:

  • Convener: Shri R K Somany (Hindustan Sanitaryware Industries Ltd)
  • Members from ceramics, water supply boards, research institutes, and industry.

Summary Table

This committee ensures standards reflect broad expertise from public health, engineering, manufacturing, and research sectors, maintaining IS 13983 relevance and quality.

graph LR
A[Chairman] --> B[Members]
B --> C[Govt. Bodies]
B --> D[Research Institutes]
B --> E[Industries]
B --> F[Ex-officio Member (DG, BIS)]
B --> G[Subcommittee (Domestic Appliances)]

For detailed names and alternates, refer to Annex A in IS 13983.