Q235B Hot Rolled Square Tube

Hollow sections mild steel Q235B under chinese standard GB/T34201,the tubes's packages,marking and Qulity certificate format shall be according to standard GB/T 2102.Hollow sections have a wide and diverse application in iconic structures such as the London Eye,Emirates Stadium and space frame structure of the world record-breaking JCB Dieselmax.

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.
 

►Mechnical property for Q235B Carbon steel tube:

Thickness (mm)
Q235B	≤ 16	> 16 ≤ 40	> 40
Yield strength (≥Mpa)	235	225	215
Tensile strength (Mpa)	370-500

►Chemical composition for Q235B Carbon steel tube (Heat Analysis Max%)

Main chemical elements composition of Q235B
C	Si	Mn	P	S
0.20	0.35	1.40	0.045	0.045