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  • S235JRh square hollow section
  • S235JRh sections

Q345D Seamless Sqaure Hollow Section

  • Steel Standard: GB/T 3094 GB/T1591
  • Rolling Type: Cold Formed SHS,Cold forming finished SHS
  • Sizes: 2*40*40MM--20*400*400MM
  • Length: 1000mm-12000mm
  • Similar Product Name: Cold formed square hollow sections,Cold formed square pipes
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■ Overview
Square hollow sections Q345D in standard GB/T 3094 owned minimum tensile strength at 470Mpa and yield strength at 345Mpa.Low temperature impacting test at minus 20 Deg.C shall be done for these square hollow sections Q345D.
■ 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.
 
■ Techicals

►Mechnical property for Q345D low alloy structural steel hollow section:

Q345D

 

Yield strength (≥Mpa)

345

Tensile strength (Mpa)

470-630


►Chemical composition for Q345D low alloy structural steel hollow section (Heat Analysis Max%)

Main chemical elements composition of Q345D

C

Si

Mn

P

S

V

Nb

Ti

0.20

0.55

1.00-1.60

0.045

0.045

0.02-0.15

0.015-0.060

0.02-0.20

 

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