GB/T 1416-2021 (English Version) PDF

Scope: This document stipulates the varieties and specifications, requirements, test methods, inspection rules, packaging, marking, transportation and storage of envelopes. This document applies to both domestic and international envelopes used for postal correspondence. This document does not apply to Clear Window Envelopes, Confidential Envelopes, International Business Reply Envelopes, and Specialty Envelopes. Note: Special envelopes include postage envelopes, first day covers, commemorative envelopes, official postal envelopes and insured envelopes.

GB/T 1416-2021 Referenced Document

GB/T 22804 Pulp、paper and board.Determination of mercury content
GB/T 22834-2008 Envelope paper
GB/T 22904 Determination of total chlorine and organochlorine in paper, board and pulp*， 2023-09-07 Update
GB/T 24990 Paper,board and pulps-Determination of chromium
GB/T 24991 Paper,board and pulps-Determination of lead content- Graphite furnace atomic absorption spectrometry method
GB/T 24997 Paper,board and pulps-Determination of cadmium content- Atomic absorption spectrometric method
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability)
YD/T 775 Envelope detection method