fabricated high-density polyethene (MDPE) fittings for potable water supplies, Part 2 Specific requirements for 90-degree tees 1977 Edition
The IS 8360 Part 2 standard (1977 edition) outlines the specifications for fabricated 90-degree tees constructed from medium-density polyethylene (MDPE) intended for drinking water piping systems. It details dimensional data, material criteria, marking protocols, and fabrication standards to guarantee safe and compatible installation within water distribution networks. This specification is vital for producers, engineers, and quality inspectors involved in manufacturing and installing MDPE fittings for potable water applications.
The IS 8360 Part 2 standard (1977 edition) outlines the specifications for fabricated 90-degree tees constructed from medium-density polyethylene (MDPE) intended for drinking water piping systems. It details dimensional data, material criteria, marking protocols, and fabrication standards to guarantee safe and compatible installation within water distribution networks. This specification is vital for producers, engineers, and quality inspectors involved in manufacturing and installing MDPE fittings for potable water applications.
Audience
Who Uses This Standard
Designers of water distribution infrastructures
Manufacturers specializing in plastic pipes and fittings
Civil and sanitation engineering professionals
Quality control and inspection specialists in piping systems
Public health and water supply authorities
Contractors installing potable water networks
Regulatory compliance and certification officers
Contents
Key Topics Covered
✓Fabrication criteria for 90-degree MDPE tee fittings
✓Dimensional standards and permissible variations
✓Wall thickness requirements relative to connected pipes
✓Identification markings and Standard Mark application
✓Material suitability for potable water use
✓Measurement of overall laying length
✓Testing protocols and rounding conventions
✓Installation recommendations for water supply systems
✓Inspection and quality assurance procedures
✓Licensing and certification under BIS regulations
✓Health and safety considerations in potable water fittings
✓Reference to IS 8360 Part 1 for pipe dimensions and testing
Structure
Table of Contents
1Introduction and Adoption of Specifications
2Illustration and Dimensional Details of Fabricated 90-Degree Tees
3Laying Length Measurements and Tolerance Limits
4Pipe Diameter and Wall Thickness Specifications
5Marking Requirements for Fabricated 90-Degree Tee Fittings
6Standard Mark Usage and Licensing Procedures
7Scope, Application and Compliance Testing
8General Compliance and Testing Methodology
Frequently Asked
Popular Questions About IS 8360 PART 2
?What are the dimension and tolerance requirements for 90-degree MDPE tees?▼
IS 8360 Part 2 (1977) sets forth that fabricated 90-degree tees must adhere to specified dimensions and tolerances for overall laying length (Z) as detailed in Clause 2.2.2 and Table 1. These dimensions vary with pipe size, with tolerances increasing proportionally to the fitting size. Wall thickness must not be less than that of the pipe to which the tee is attached, and outside diameters must conform to IS 8360 Part 1 (1977) standards.
?How does the wall thickness of fabricated tees relate to that of the connected pipes?▼
According to Clause 2.2.3 in IS 8360 Part 2, the wall thickness of fabricated 90-degree tees shall be equal to or greater than the wall thickness of the pipes they are welded to. This requirement ensures structural integrity and compatibility during installation and operation, preventing weakness at the joint.
?What marking standards are required for fabricated 90-degree tee fittings?▼
Per Clause 3.1.1 of IS 8360 Part 2, each fabricated 90-degree tee fitting may carry the Standard Mark for identification. Markings typically include the manufacturer’s identification, size, pressure rating, and batch or heat number to ensure traceability and compliance with quality standards.
?Are fabricated MDPE tees suitable for all potable water supply systems?▼
Fabricated 90-degree MDPE tees conforming to IS 8360 Part 2 and marked accordingly can be used in potable water supply networks, provided they meet the required pressure class and material compatibility. While the standard specifies suitability for drinking water, actual use depends on matching system pressure and health safety requirements.
?What are the licensing requirements for using the Standard Mark on fabricated fittings?▼
The use of the Standard Mark on fabricated fittings such as 90-degree tees is regulated under the Bureau of Indian Standards Act, 1986. Manufacturers must obtain a license from the Bureau of Indian Standards (BIS) to legally apply the Standard Mark. Licensing details and conditions are available from BIS regional and branch offices.
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