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GB/T 19348.2-2025 English PDF

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GB/T 19348.2-2025: Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values
Status: Valid

GB/T 19348.2: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 19348.2-2025254 Add to Cart 3 days Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values Valid
GB/T 19348.2-2003204 Add to Cart 3 days Non-destructive testing -- Industrial radiographic films -- Part 2: Control of film processing by means of reference values Valid

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GB/T 19799.1   GB/T 19348.1   GB/T 19802   GB/T 30565   GB/T 19799.3   

Basic data

Standard ID: GB/T 19348.2-2025 (GB/T19348.2-2025)
Description (Translated English): Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 19.100
Word Count Estimation: 12,119
Date of Issue: 2025-05-30
Date of Implementation: 2025-09-01
Older Standard (superseded by this standard): GB/T 19348.2-2003
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 19348.2-2025: Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 19.100 CCSJ04 National Standard of the People's Republic of China Replaces GB/T 19348.2-2003 Industrial radiographic films for non-destructive testing Part 2.Control of film processing using the reference value method (ISO 11699-2.2018,IDT) Released on 2025-05-30 2025-09-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 2 of GB/T 19348 "Industrial radiographic films for non-destructive testing". GB/T 19348 has been published as Lower part. --- Part 1.Classification of industrial radiographic film systems; --- Part 2.Control of film processing using reference value method. This document replaces GB/T 19348.2-2003 "Non-destructive testing of industrial radiographic films - Part 2.Control by reference value method" Compared with GB/T 19348.2-2003, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the requirements for the optical density steps of pre-exposed film test pieces (see 4.1, 4.1 of the.2003 edition); b) Added the film model used for film test pieces (see 4.2); c) The step height has been changed (see Table 1, Table 1 of the.2003 edition); d) The accuracy requirements of reference values have been changed (see 4.4, 4.4 of the.2003 edition); e) Added certificate content (see 4.5); f) Added a mixing system (see 5.2); g) Density meter calibration has been changed (see 5.5.1, 5.3.1 of the.2003 edition); h) Added film life requirements (see 5.5.3). This document is equivalent to ISO 11699-2.2018 "Industrial radiographic films for non-destructive testing - Part 2.Control by reference value method" Film Processing. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Nondestructive Testing (SAC/TC56). This document was drafted by. Shanghai Boiler Factory Co., Ltd., Shanghai Materials Research Institute Co., Ltd., Hangzhou Special Equipment Inspection Scientific Research Institute (Hangzhou Special Equipment Emergency Response Center), Dongfang Steam Turbine Co., Ltd. of Dongfang Electric Corporation. The main drafters of this document are Yin Xunyu, Zhang Peiming, Jiang Jiansheng, Ding Jie, Chen Tao, Ai Song, Peng Baoxian, Yang Tianlun and Han Lina. This document was first published in.2003 and this is the first revision.

Introduction

The quality of the image on the film in radiographic inspection is closely related to the type of film. Different image qualities require the use of different films. But the quality of the image is not only related to the film itself, but also to the processing of the film. GB/T 19348 "Industrial radiographic films for non-destructive testing" aims to standardize the classification of film systems and film processing. It consists of 2 parts. --- Part 1.Classification of industrial radiographic film systems. The purpose is to determine the performance of film systems. --- Part 2.Control of film processing using reference value method. The purpose is to specify the procedures for controlling film processing. This revision of GB/T 19348.2-2003 has important guiding significance for standardizing film processing. Industrial radiographic films for non-destructive testing Part 2.Control of film processing using the reference value method

1 Scope

This document establishes the procedures for controlling film handling systems.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. ISO 11699-1 Non-destructive testing Industrial radiographic films Part 1.Classification of industrial radiographic film systems (Non-destructive testing Industrial radiographic films Part 1.Classification of industrial radiographic film systems radiography Note. GB/T 19348.1-2014 Industrial radiographic films for non-destructive testing Part 1.Classification of industrial radiographic film systems (ISO 11669- 1.2008,MOD) ISO 18901 Imaging materials - Processed silver-gelatin black-and-white film stability specification

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Film system filmsystem A combination of film and film processing performed in accordance with the film manufacturer's and/or processing chemical manufacturer's instructions. [Source. ISO 11699-1.2008, 3.1] 3.2 film system class filmsystemclass Classification of film systems (see 3.1) that meet the limits specified in Table 1 of ISO 11699-1.2008. 3.3 Film test film filmstrip A strip of film with different constant optical density steps after exposure. 3.4 Pre-exposed film strip After X-ray pre-exposure, at least 10 film test pieces with different optical densities can be given after processing (see 3.3). 3.5 net density Diffuse optical density excluding base density and fog.
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