+86 371 55057610 
inquiry@xsteelplate.com
■ Overview
Xinsteel keeps varies sizes stock for 20# square hollow sections,20# seamless steel tubes,20# seamless steel pipes,20# square tubes,20# square pipes,20# welded pipes.Xinsteel stockholder variouse dimensions of hot rolled steel square hollow sections,the biggest stock sides can be 500mm*500mm
which can be loading for shipment soonest.
■ 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 20 structural hollow section:
|
20# |
|
|
Yield strength (≥Mpa) |
245 |
|
Tensile strength (≥Mpa) |
410 |
►Chemical composition for 20 structural steel tube (Heat Analysis Max%)
|
Main chemical elements composition of 20# |
|||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
|
0.17-0.23 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.25 |
0.30 |
0.25 |
Tel：+86 371 55057610 
Fax： +86 371 5505 7611