GBT 9124.2-2019

Steel pipe flanges — Part 2: Class series

钢制管法兰 第2部分：Class 系列

Standard Type
GBT
ICS
N/A
CCS
N/A
Status
N/A
Issue Date
N/A
Implementation
N/A
Responsible Dept
N/A
Drafting Unit
N/A