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  • S235JRh square hollow section
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Q345B Seamless Rectangular Hollow Section

  • Steel Standard: GB/T 3094 GB/T1591
  • Rolling Type: Cold Formed RHS,Cold forming finished RHS
  • Sizes: 2*20*40MM--20*400*600MM
  • Length: 1000mm-12000mm
  • Similar Product Name: Cold formed rectangular hollow sections,Cold formed rectangular pipes
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■ Overview
The rectangular hollow sections Q345B in standard GB/T3094 mainly used in all types of buildings,highway guardrails and signage,support columns,trusses,bridges,heavy equipment,storage systems and exercise equipments.Xinsteel stockholder thousands tons different sizes of hot rolled hot formed finished rectangular hollow section Q345B with seamless type and welded type.
 
■ 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 Q345B low alloy structural steel hollow section:

Q345B

 

Yield strength (≥Mpa)

345

Tensile strength (Mpa)

470-630


►Chemical composition for Q345B low alloy structural steel hollow section (Heat Analysis Max%)

Main chemical elements composition of Q345B

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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