Standard No.:	GB/T 33817-2026
English Name:	Method for determination of the carbon film and carbon content on the inner surface of copper and copper-alloy tube
Chinese Name:	铜及铜合金管材内表面碳膜和碳含量的测定方法
Chinese Classification:	H13    Heavy metals and their alloys analysis method
Professional Classification:	GB    National Standard
ICS Classification:	77.120.99 77.120.99    Other non-ferrous metals and their alloys 77.120.99
Source Content Issued by:	SAMR, SAC
Issued on:	2026-05-25
Implemented on:	2026-12-1
Status:	to be valid
Superseding:	GB/T 33817-2017 Method for determination of the carbon content on the inner surface of copper and copper-alloy tube
Target Language:	English
File Format:	PDF
Word Count:	9000 words
Translation Price(USD):	270.0
Delivery:	via email in 1~3 business day

本文件描述了铜及铜合金管或管件内表面碳膜的定性分析和碳含量的定量测定方法。本文件适用于铜及铜合金管或管件（以下简称“管材”)内表面碳膜定性分析和碳含量的定量测定，内表面碳含量测量范围为 5.0 mg/m 2~500 mg/m 2。