+86 371 55057610 
inquiry@xsteelplate.com
■ Overview
Xinsteel keeps all kinds of stock hot formed and cold formed galvanzied square tubes Q390A,galvanized square hollow sections Q390A and galvanized square pipes Q390A.Hollow sections under chinese standard GB/T34201,the tubes's packages,marking and Qulity certificate format shall be according to standard GB/T 2102.
■ Full Data
Technical Requirements & Additional Services:
♦ Galvanized coating according to GB/T 13912
♦ Dimension tolerance according to GB/T6728
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime.
♦ Galvanized coating according to GB/T 13912
♦ Dimension tolerance according to GB/T6728
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime.
■ Techicals
►Mechnical property for Q390A low alloy structural steel tube:
|
Thickness (mm) |
|||
|
Q390A |
≤ 16 |
> 16 ≤ 40 |
> 40 |
|
Yield strength (≥Mpa) |
345 |
335 |
325 |
|
Tensile strength (Mpa) |
470-630 |
||
►Chemical composition for Q390A low alloy structural steel tube (Heat Analysis Max%)
|
Main chemical elements composition of Q390A |
|||||||
|
C |
Si |
Mn |
P |
S |
Nb |
V |
Ti |
|
0.20 |
0.50 |
1.70 |
0.035 |
0.035 |
0.07 |
0.20 |
0.20 |
|
Cr |
Ni |
Cu |
N |
Mo |
B |
Al Min. |
|
|
0.30 |
0.50 |
0.30 |
0.015 |
0.10 |
- |
- |
|
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