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  • S235JRh square hollow section
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Q390C Galvanized Rectangular Tube

  • Steel Standard: GB/T 34201 GB/T700
  • Rolling Type: Hot Rolled RHS,Hot finished RHS
  • Sizes: 2*50*30MM--60*600*400MM
  • Length: 1000mm-15000mm
  • Similar Product Name: hot rolled rectangular hollow sections,hot rolled rectangular pipes
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■ Overview
Hot rolled Rectangular Tubes Q390C in standard GB/T 34201 is inherently strong and efficient.These sections give buildings a better strength-to-weight ratio than those using comparable steel,concreteor timber products.Rectangular hollow section Q390C shall be done low temperature impating test at zero Deg.C when rolling.
 
■ 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 Q390C low alloy structural steel tube:

Thickness (mm)

Q390C

≤ 16

> 16 ≤ 40

> 40

Yield strength (≥Mpa)

345

335

325

Tensile strength (Mpa)

470-630


►Chemical composition for Q390C low alloy structural steel tube (Heat Analysis Max%)

Main chemical elements composition of Q390C

C

Si

Mn

P

S

Nb

V

Ti

0.20

0.50

1.70

0.030

0.030

0.07

0.20

0.20

Cr

Ni

Cu

N

Mo

B

Als Min.

 

0.30

0.50

0.30

0.015

0.10

-

0.015

 

 

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