ISO 3914-7:1994

Overview - ISO 3914-7:1994 (Cylindrical tubes for cheese dyeing)

ISO 3914-7:1994 is an international standard from ISO that specifies the dimensions, tolerances and designation of perforated cylindrical tubes used for cheese dyeing in the textile industry. It defines principal sizes and tolerances, gives directives on tube characteristics (material, wall thickness, treatment, perforation) and prescribes methods for control of inner diameter and tube length to ensure interchangeability and consistent performance in dyeing equipment.

Key topics and technical requirements

• Scope: Applies to perforated cylindrical tubes intended for cheese dyeing; sets main dimensions and tolerance rules.
• Materials and characteristics: Manufacturer should specify tube material (e.g., paper or plastics), wall thickness (matched to yarn type), treatment (impregnated or not), groove for reserve (if needed), and perforation details (number, size, position).
• Dimensions and tolerances: Main internal diameters and lengths are defined as recommended values; the standard includes tolerance guidance and allows for case-by-case agreement when special tolerances are required. An example designation from the standard: Tube cylindrique ISO 3914-7 - 54 x 170 (diameter 54 mm, length 170 mm).
• Measurement and control:
  • Inner diameter: controlled using a GO/NO‑GO gauge (ENTRE/N’ENTRE PAS).
  • Length: measured with an appropriate device such as a caliper (pied à coulisse).
• Designation format: The tube designation must include, in order, “Tube cylindrique”, the reference ISO 3914-7, the internal diameter (d, mm) and the length (l, mm).

Practical applications and users

ISO 3914-7 is relevant to:

• Textile machinery and accessory manufacturers (tube suppliers for dyeing machines)
• Dyehouse equipment specifiers and procurement teams
• Quality control and inspection personnel in textile production
• Designers of winding and dyeing systems who require standardized perforated tubes for consistent dye flow and package handling

Using the standard improves compatibility between tubes and dyeing machines, reduces rejects caused by dimensional variation, and streamlines procurement by standardizing designation and inspection methods.

Related standards

ISO 3914-7 is part of the ISO 3914 series (Cylindrical tubes). Related parts include:

• ISO 3914-1 - Recommended principal dimensions
• ISO 3914-2 through ISO 3914-6 - Parts covering tubes for spinning, textile blades, textured yarns, synthetic filament yarns and cross-winding/rehanking applications

Keywords: ISO 3914-7, cylindrical tubes, perforated tubes for cheese dyeing, textile machinery, dimensions, tolerances, tube designation, GO/NO‑GO gauge, caliper, dyehouse equipment.