Standard No.:	GB/T 3864-2025
English Name:	Industrial nitrogen
Chinese Name:	工业氮
Chinese Classification:	G86    Industrial gas and chemical gas
Professional Classification:	GB    National Standard
ICS Classification:	71.100.20 71.100.20    Gases for industrial application 71.100.20
Source Content Issued by:	SAMR; SAC
Issued on:	2025-8-1
Implemented on:	2026-2-1
Status:	to be valid
Superseding:	GB/T 3864-2008 Industrial Nitrogen
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	225.0
Delivery:	via email in 1~3 business day

ICS 71.100.20 CCS G 86 National Standard of the People's Republic of China GB/T 3864-2025 Replaces GB/T 3864-2008 Industrial nitrogen 工业氮 (This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.) Issue date: 2025-08-01 Implementation date: 2026-02-01 Issued by the State Administration for Market Regulation the Standardization Administration of the People's Republic of China Industrial nitrogen 1 Scope This document specifies the technical requirements for industrial nitrogen, as well as requirements for batch formation, sampling, test sampling, test methods, inspection rules, marking, labeling, accompanying documents, packaging, filling, transportation, and storage. It describes the relevant test methods and provides safety information for industrial nitrogen. This document applies to gaseous and liquid industrial nitrogen obtained by separation from air or through purification. 2 Normative references The contents of the following documents constitute indispensable provisions of this document through normative reference in the text. For dated references, only the edition corresponding to that date applies to this document. For undated references, the latest edition (including all amendments) applies to this document. GB/T 150 (all parts) Pressure vessels GB 190 Hazardous goods packaging marks GB/T 191 Packaging—Pictorial marking for handling of goods GB/T 3634.2 Hydrogen—Part 2: Pure hydrogen, high-purity hydrogen and ultra-pure hydrogen GB/T 5099 (all parts) Seamless steel gas cylinders GB/T 5832.1 Gas analysis—Determination of water content—Part 1: Electrolytic method GB/T 5832.2 Gas analysis—Determination of water content—Part 2: Dew point method GB/T 6285 Determination of trace oxygen in gases—Electrochemical method GB/T 7144 Color marking for gas cylinders GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 8979 Pure nitrogen, high-purity nitrogen and ultra-pure nitrogen GB/T 8984 Gas analysis—Determination of trace amounts of carbon monoxide, carbon dioxide and hydrocarbons in gases—Gas chromatographic method with flame ionization detector GB/T 11640 Seamless aluminum alloy gas cylinders GB/T 14194 Filling requirements for compressed gas cylinders GB 15258 General rules for preparation of precautionary label for chemicals GB/T 15382 General technical requirements for cylinder valves GB/T 16804 Precautionary labels for gas cylinders GB/T 16483 Chemical safety data sheet—Content and order of sections GB/T 24159 Welded insulated gas cylinders GB/T 27550 Safety technical requirements for gas cylinder filling stations GB/T 28051 Filling requirements for welded insulated gas cylinders GB/T 28054 Bundles of seamless steel gas cylinders GB/T 28124 Gas analysis—Determination of trace hydrogen, oxygen, methane, and carbon monoxide in inert gases—Gas chromatographic method with zirconia detector GB/T 30685 Technical requirements for road transport of gas cylinders in upright position GB/T 33145 Large seamless steel gas cylinders GB/T 34525 Safety regulations for handling, loading, unloading, storage and use of gas cylinders GB/T 34528 Filling requirements for cylinder bundles GB/T 43306 Gas analysis—Sampling guidelines HG/T 5896 High purity air JT/T 617 (all parts) Regulations concerning the road transport of dangerous goods NB/T 10354 Tube trailers NB/T 10355 Tube container modules TSG R0005 Safety Technical Supervision Regulation for Mobile Pressure Vessels TSG 23 Safety Technical Regulation for Gas Cylinders 3 Terms and definitions No terms and definitions are stipulated in this document. 4 Technical requirements 4.1 The technical requirements for industrial nitrogen shall comply with the provisions of Table 1. Table 1 Technical requirements 5 Batch formation, sampling and test sampling 5.1 Batch formation Industrial nitrogen products filled into cylinders from a single production line under stable and continuous operation constitute one batch, with a maximum of 500 cylinders per batch. For industrial nitrogen filled into cylinder bundles, tankers, tube trailers, tube container modules, large seamless steel gas cylinders, or welded insulated gas cylinders, each individual package constitutes one batch. 5.2 Sampling Shall comply with the provisions of GB/T 43306. 5.3 Test sampling 5.3.1 For cylinder-filled industrial nitrogen, samples shall be taken randomly for inspection according to the sampling quantities specified in Table 2. Table 2 Sampling inspection table for cylinder-filled industrial nitrogen 5.3.2 For industrial nitrogen filled into cylinder bundles, tankers, tube trailers, tube container modules, large seamless steel gas cylinders, or welded insulated gas cylinders, each package shall be inspected individually. 5.3.3 For industrial nitrogen delivered via pipeline, sampling and inspection shall be conducted once every 4 hours, or the sampling frequency shall be agreed upon between the supplier and the purchaser. 6 Test methods 6.1 Calculation of nitrogen purity 6.1.1 Calculation of total impurity content in nitrogen 6.1.1.1 The total impurity content in gaseous industrial nitrogen shall be calculated using formula (1) for φ (or x).