GB/T 20409-2018

Active

Seamless multi-rifled steel tubes for high-pressure boiler

高压锅炉用内螺纹无缝钢管

Standard Type
GBT
ICS
77.140.75
CCS
H48
Status
现行
Issue Date
2018-05-14
Implementation
2019-02-01
Responsible Dept
中国钢铁工业协会
Drafting Unit
中国钢铁工业协会