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  • S235JRh square hollow section
  • S235JRh sections

Q390A 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
Xinsteel keeps all kinds of stock hot formed and cold formed rectangular tubes Q390A,rectangular hollow sections Q390A and seamless rectangular pipes Q390A.The manufacturing processes of hot finished and cold formed hollow sections are very different.Hot finished hollow sections are formed at normalising temperature (approx 900°C).Cold formed hollow sections are formed at ambient temperature.
■ 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 Q390A low alloy structural steel hollow section:

Q390A

 

Yield strength (≥Mpa)

390

Tensile strength (Mpa)

490-650


►Chemical composition for Q390A low alloy structural steel hollow section (Heat Analysis Max%)

Main chemical elements composition of Q390A

C

Si

Mn

P

S

V

Nb

Ti

Cr

Ni

0.20

0.55

1.00-1.60

0.045

0.045

0.02-0.20

0.015-0.060

0.02-0.20

0.30

0.70

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