Q345b Square Steel Hollow Section With Oiled Surface

Producing q345b square steel hollow section with oiled surface with high precision and high quality, it is one of the competitive q345b square steel hollow section with oiled surface manufacturers and suppliers in China. Our professional mill is capable of giving you products made in China wholesale service. Welcome to contact our factory.

Basic Info


  • Technique: Hot Rolled

  • Surface Treatment: Black

  • Section Shape: Square

  • Steel Grade: Q235/Q345/16mn/ASTM A500/Ss400/A53/A36

  • Length: Normal 6 Meters, Accept Fixed Lenght

  • Surface: Hot Rolled/Black Anneal/Anti Rust Oil

  • Specification: SHS:20X20-600X600mm,RHS:20X30-400X600mm,CHS:19-720

  • HS Code: 7306610000

  • Type: Welded

  • Material: Carbon Steel

  • Usage: Construction & Decoration

  • Dimension(Mm): 10X10-600X600;10X20-400X600;10-720

  • Wall Thickness(Mm): 1.5-20mm

  • W.T Tolerance(Mm): +/- 0.2mm

  • Product Description



Our Product introduction:
Commodity:  HOT ROLLED STEEL HOLLOW SECTION
Dimension range: SHS: 20X20-600X600mm, RHS:20X30-400X600mm,CHS:OD19-720mm
Wall thickness:  1.50-20 mm
Length:  1-12meters( normal length6000mm, accept fixed length)
Material:  Q195 and Q235 Mild Steel , Q345 Low Alloy steel, ASTM A500 Gr.B,
            ASTM A36, S355JRH,SS400
Surface treatment:  Anti-rust Oiled surface,Black
Thickness tolerance:  +/- 0.2mm
OD. Tolerance:  +/- 0.2mm 
Technique:  Hot rolled
Application: construction,Steel structure, Road sign,Steel frame,light industry,                automobile industry, agriculture, etc.
MOQ:  10MT
Package:  Surface to be oiled and be packed in bundle, wrapped with steel strips
Payment term:  T/T or L/C at sight
Delivery time:  within 15-20days after receiving the deposit
Remark:  Special spec is available


Mechanical character & Chemical element of normal material:
Material
Chemical
Composition
(%)
Q195CMnSiSP
0.06-0.120.25-0.50≤0.30≤0.050≤0.045
Tensile strength: 315-430(Mpa)
Yield strength:195(Mpa)
Elongation:33
Q235CMnSiSP
0.12-2.00.3-0.70≤0.30≤0.045≤0.045
Tensile strength: 375-460(Mpa)
Yield strength:235(Mpa)
Elongation:26
Q345CMnSiSPV
≤0.20≤1.70≤0.55≤0.040≤0.0400.02-0.15
Tensile strength: 470-630(Mpa)
Yield strength:345(Mpa)
Elongation:21


Normal dimension of steel pipe
Square (SHS)Rectangular(RHS)Circle (CHS)
Out dia.
(mm)
Wall thickness
(mm)
Out dia.
(mm)
Wall thickness
(mm)
Out dia.
(mm)
Wall thickness
(mm)
10x100.5-1.010x200.6-1.0100.5-1.0
12x120.5-1.012x250.6-1.0120.6-1.0
16x160.6-1.220x400.6-1.6160.6-1.0
19x190.6-1.525x500.8-2.75190.6-1.5
20x200.6-1.630x500.8-3.0200.6-1.5
25x250.8-2.7530x600.8-3.021.50.6-1.5
30x300.8-2.7540x601.0-4.0250.8-2.75
32x321.0-3.040x801.5-4.0270.8-2.75
38x381.0-3.050x751.5-4.0320.8-3.0
40x401.0-3.550x1002.0-6.038.11.0-3.0
50x501.0-5.050x1252.0-6.042.51.0-3.5
60x601.0-6.050x1503.0-6.048.41.0-5.0
63.5x63.51.0-6.060x801.5-6.050.81.0-5.0
70x701.5-6.060x1002.0-6.063.51.0-6.0
75x751.5-6.060x1202.0-6.0681.2-6.0
80x802.0-6.075x1002.0-6.0701.2-6.0
90x902.0-6.075x1252.0-6.0731.4-6.0
100x1002.3-6.075x1503.0-6.0761.4-6.0
120x1203.0-6.080x1202.0-6.0802.0-6.0
125x1253.0-6.080x1603.0-6.0892.0-6.0
150x1503.5-8.0100x1504.0-12902.0-6.0
200x2004.0-12100x1754.0-12952.0-6.0
250x2505.0-12100x2004.0-121002.3-6.0
300x3005.0-14150x2004.0-121022.3-6.0
350x3506.0-14150x2504.0-141082.3-6.0
400x4006.0-18150x3005.0-161102.3-6.0
500x5008.0-20200x3005.0-161142.3-6.0
600x6008.0-20200x4006.0-161333.0-6.0


300x5006.0-201403.0-8.0


400x6008.0-201523.0-8.0




1653.0-8.0




1903.5-12




2004.0-12




2194.0-12




2734.0-14




3255.0-16




3775.0-16




4266.0-20