US $750.0015 - 40,000 ton
US $580.0040,001 - 999,999 ton
Paramtents
Standard GB, ASTM
Standard GB/T 3094-2000, ASTM A523-1996
Grade 10#-45#, 16Mn, Q195-Q345
Grade 20#, 45#, 16Mn, Q235, Q345, Q195, Q215
Thickness 0.7 - 13 mm
Section Shape square / rectangular
Secondary Or Not Non-secondary
Application structure /fence board/green house/building
Technique ERW
Certification ISO9000
Surface Treatment galvanized/ coating/ beveled/plastic
Special Pipe Thick Wall Pipe
Alloy Or Not Non-alloy
Type Welded
Welded Line Type Longitudinal
Technique hot rolled/cold rolled
Length 3-12m
Specification 20*20-400*400mm
Usage structure for green house ,furniture making ,fencing ,scaffolding
Life over 10years
Packging & Delivery
Min Order15 ton
Briefing
Detailed
Hollow Section Pipe
Professionally produced by ERW WELDING IN GOOD QUALITY
OD 20*20-400*400
WT 0.7mm-13mm
life more than 10years
usage:furniture making ,tv stand,scaffolding,bedsteads,etc.
chemical composition-Q235:
Q235 made by grade A\B\C\D(GB700-88)
Q235A C0.14~0.22% Mn0.30~0.65 Si≤0.30 S≤0.050 P≤0.045
Q235B C0.12~0.20% Mn0.30~0.670 Si≤0.30 S≤0.045 P≤0.045
Q235C C≤0.18% Mn0.35~0.80 Si≤0.30 S≤0.040 P≤0.040
Q235D C≤0.17% Mn0.35~0.80 Si≤0.35 S≤0.040 P≤0.035
mechanical behavior-Q235:
tensile strength: σb/MPa 375-500
tensil stretch(δ5/%):
>26 (a<16mm), >25 (a>16-40mm)
>24 (a>40-60mm), >23 (a>60-100mm)
>22 (a>100-150mm), >21 (a>150mm)
a=wt or diameter
Square steel pipe is a kind of economic steel tube,compared with other non-round steel tube,it's a
product in light weight,high intensity,big anti-curved section modulus,saving metal easy installation.
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