GB/T 29606-2026Stainless steel vacuum flasks (English PDF)

1 Scope

This document specifies the requirements for stainless steel materials, volume tolerance, and heat preservation performance of stainless steel vacuum cups (bottles, jugs), and describes the corresponding tests.

The method specifies the requirements for inspection rules, marking, labeling, instructions for use, packaging, transportation and storage, and also provides product classification and specifications.

This document applies to the production, inspection, and sale of stainless steel vacuum cups (bottles, jugs) and other utensils that come into contact with food (hereinafter referred to as "products").

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 191 Packaging and Storage Graphic Symbols

GB/T 223.4 Determination of manganese content in iron and steel and alloys by potentiometric or visual titration method

GB/T 223.5 Determination of Acid-Soluble Silicon and Total Silicon Content in Iron and Steel - Reduced Molybdate Spectrophotometric Method

GB/T 223.11 Determination of Chromium Content in Iron and Steel and Alloys - Visual Titration or Potentiometric Titration

GB/T 223.18 Chemical Analysis Methods for Iron and Steel Alloys - Determination of Copper by Sodium Thiosulfate Separation-Iodometric Method

GB/T 223.19 Chemical Analysis Methods for Iron and Steel Alloys - Determination of Copper Content by Neo-Copper-Chloroform Extraction Spectrophotometric Method

GB/T 223.23 Determination of Nickel Content in Iron and Steel and Alloys - Dimethylglyoxime Spectrophotometric Method

GB/T 223.25 Chemical Analysis Methods for Iron and Steel Alloys - Determination of Nickel Content by Gravimetric Method of Dimethylglyoxime

GB/T 223.28 Chemical Analysis Methods for Iron and Steel Alloys - Determination of Molybdenum by alpha-Benzoxime Gravimetric Method

GB/T 223.37 Determination of Nitrogen Content in Iron and Steel and Alloys - Distillation Separation of Indophenol Blue Spectrophotometric Method

GB/T 223.59 Determination of phosphorus content in iron and steel and their alloys - Bismuth-phosphomolybdenum blue spectrophotometric method and antimony-phosphomolybdenum blue spectrophotometric method

GB/T 223.63 Determination of Manganese Content in Iron and Steel and Alloys - Sodium (Potassium) Periodate Spectrophotometric Method

GB/T 223.85 Determination of sulfur content in iron and steel and their alloys by infrared absorption method after combustion in an induction furnace

GB/T 223.86 Determination of total carbon content in iron and steel and their alloys by infrared absorption method after combustion in an induction furnace

GB/T 251-2008 Textiles - Tests for color fastness - Assessment of staining - Gray scale

GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes Retrieved by Acceptable Quality Limit (AQL) for Lot-by-Lot Inspection

GB/T 2829-2002 Periodic Inspection Sampling Procedures and Tables (Applicable to the Inspection of Process Stability)

GB/T 3280-2015 Stainless steel cold-rolled sheet and strip

GB/T 3922 Textiles - Tests for color fastness - Color fastness to perspiration

GB/T 4208-2017 Degrees of protection provided by enclosures (IP code)

GB/T 6543 Single-wall and double-wall corrugated cardboard boxes for transport packaging

GB/T 20878 Stainless Steel Grades and Chemical Composition

GB/T 42762-2023 General Technical Requirements for Cups and Pots

3 Terms and Definitions

The following terms and definitions apply to this document.