Q235B 50x50x4MM Square tube 6Mtrs Length Loading in 40feet Container

Our company accept payment after material at your warehouse.
Keep your benefit 100%.
We can proceed the payment after received material at your site in 180 days max.
Contact person: Ms. Bo Liu
Wechat/ WhatsApp: +86-18132295086
Facebook: www.facebook.com/bo.bao.5458
Linkedin: www.linkedin.com/in/bo-liu-b2983b1b/


Your e-mail will not be leaked.
You can make an inquiry about this product.

Follow the Trade Assurance process and get:

  • On-time shipment and pre-shipment product quality safeguards.
  • Payment refund up to 100% of the Trade Assurance Order Amount.
  • Trade Assurance coverage.

Product Description

Size Dimension 12*12-500*500mm( high size seamless squae tube st37.4 astm a660)
  Wall Thickness 0.6-16mm
  ZINC COATED 1)Pre-galvanized:Z60-120g/m2

2)Hot dip galvanized:Z260-520g/m2

Steel material Q195 → Grade B, SS330,SPHC, S185

Q215 → Grade C,CS Type B,SS330, SPHC

Q235 → Grade D,SS400,S235JR,S235JO,S235J2

Q345 → SS500,ST52

Standard BS1387,EN10297,BS6323,BSEN10217,GB/T13793-1992,


GB3640-88,ASTM A53/A36,EN39/EN10219,API 5L,

GB/T9711.1-99 etc

Section shape Round/Square/Rectangular
Type Welded Pipe
Technique Electronic Resistance Welded (ERW )

Electronic Fusion Welded (EFW)

Double Submerged Arc Welded (DSAW)

Welded Line Type Longitudinal
Ends 1)Plain


3)Thread with Coupling or cap

End protector 1) Plastic pipe cap

2) Iron protector

Surface Treatment 1) Bared

2) Black Painted (varnish coating)

3) Galvanized

4) With Oiled

5) 3 PE, FBE, corrosion resistant coating

Inspection With Hydraulic Testing, Eddy Current , Infrared Test

Production Flow

Packaging & Shipping


Global Business

1. More than 10 years of sales experience

2. Product exported more than 150 countries

3. Arrange to produce according yo customer's request

Fast Delivery

1. AA level customs broker,Faster through

2. 20 years of experience in the freight forwarding company

3. Delivery Detail: 10-20 days

Trusted Quality

1. Certificate: API, CE, ISO9001.2000.MTC etc

2. Inspection: BV,SGS,others is avaliable.

3. A complete testing system and testing equipments

One-Step Service

1. Free sample can be provided

2. Small order is acceptable

3. OEM is acceptable

4. Any third party testing is acceptable




  • Phone0086-317-2159105


  • Phone0086-317-2159106