材质
Q235, Q345, 删, Q215, STPG42, ST37, St37-2
Secondary Or Not
Non-secondary
company
shanghai AIYIA group
standard
GB/T3091-93-2008, ASTM A53 BS1387-1985
grade
Q195-Q235, SS400, ST37-2, STK400, STK500
Key words
steel pipe/iron pipe
Material
Galvanized steel/hot rolled steel