GB/T 9948-2025: Seamless steel tubes and pipes for petrochemical and chemical facilities

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Scope

This document specifies the classification, code, ordering content, manufacturing
process, technical requirements, specimens, test methods, inspection rules, packaging,
marking and quality certificate of seamless steel tubes and pipes for petrochemical and
chemical facilities.
This document applies to seamless steel tubes and pipes for petroleum cracking,
seamless steel tubes and pipes for high-pressure fertilizer equipment, high-pressure
alloy steel tubes and pipes for polyethylene, and stainless-steel seamless tubes and pipes
for industrial furnaces in petrochemical hydrogenation units (hereinafter referred to as
"steel tubes and pipes").

Basic Data

Standard ID	GB/T 9948-2025 (GB/T9948-2025)
Description (Translated English)	Seamless steel tubes and pipes for petrochemical and chemical facilities
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H48
Classification of International Standard	77.140.75
Word Count Estimation	33,316
Date of Issue	2025-06-30
Date of Implementation	2026-01-01
Older Standard (superseded by this standard)	GB/T 9948-2013, GB/T 6479-2013, GB/T 24592-2009, GB/T 33167-2016
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration