ISO 2327:1972 PDF

Overview

ISO 2327:1972 - Pneumatic handling appliances for loose bulk materials - Piping defines standard piping dimensions used in pneumatic conveying systems for loose bulk materials. Published by ISO (Technical Committee ISO/TC 101), the standard specifies internal diameter (D), external diameter (D1) and wall thickness (e) for pipe in three strength series: light, medium, and strong. Dimension values are given in millimetres and a tabulated range covers typical conveying installations.

Key Topics

• Scope and purpose: standardizes pipe dimensions for pneumatic handling of bulk solids to support interchangeability and system design.
• Dimensional parameters: internal diameter (D), external diameter (D1) and wall thickness (e) are defined and tabulated.
• Three series: pipes categorized as light, medium or strong according to wall thickness and mechanical capability.
• Tabulated sizes: the table lists commonly used diameters (approximately 48.3 mm up to 368 mm) and corresponding external diameters and thicknesses.
• Normative notes: recommended sizes are highlighted in the original table; the standard cross-references ISO/R 336 for steel tube dimensions and mass per unit length.

Applications

ISO 2327:1972 is directly applicable to the design, specification and procurement of piping used in pneumatic conveying systems handling loose bulk materials such as powders, granules and pellets. Typical applications include:

• Pneumatic conveyors in cement, chemical, food processing and agricultural industries
• Bulk handling equipment in mining, ports and logistics terminals
• Plant piping layout for material transfer, suction and pressure lines
• Specification and tender documents for OEMs and system integrators

Practical uses:

• Select appropriate pipe diameter and wall thickness for convey line capacity and wear resistance
• Ensure compatibility and interchangeability between suppliers and system components
• Reference a recognized international dimension set when preparing procurement specifications

Who uses this standard

• Mechanical and process engineers designing pneumatic conveying systems
• Pipe and tube manufacturers producing standardized conveying piping
• Equipment OEMs, fabricators and plant operators
• Procurement and quality engineers specifying material and dimensional compliance

Related Standards

• ISO/R 336 - Steel tubes (welded and seamless): general table of dimensions and masses (referenced in ISO 2327 for tube dimensional data)
• Industry-specific pneumatic conveying guidance and wear/abrasion standards (consult local and sector standards for material selection and testing)

By standardizing piping sizes for pneumatic handling, ISO 2327:1972 helps reduce design ambiguity, improves supplier interoperability and streamlines procurement for bulk-material conveying systems.