Qingdao Wanrunda Imp and Exp Co.,ltd mainly supply and export various of Metal and Steel material (such as Galvanized steel pipe/tube; Welded steel pipe/tube; Square pipe/tube; Seamless steel pipe; Stainless steel tube; Galvanized steel coil; Stainless steel coil; Angle steel; H beam; Channel beam; C beam/Riffled sheet; Square bar etc) .   
At the same time we operate metal processing business, such as stamping, bending, welding, drilling, galvanizing, oiling, painting, powder coating etc.
(Painting surface)
(Exporting packages)

Product introduction:
Commodity: Painted square steel hollow section ( to export Canada)
Dimension:  40x40mm
Wall thickness: 3mm
Length: 2.4meters( normal length6000mm, accept fixed length)
Material:  Q195/S235/S355/ASTM A500/SS400/A53
Surface treatment: Painted grey color
Thickness tolerance:  +/- 0.1mm
OD. Tolerance:  +/- 0.1mm 
Technique:  Hot rolled/ERW
Application: construction,Steel structure, Road sign,Steel frame,light industry,
               shelf,automobile industry, agriculture, etc.
MOQ:  20MT
Package:  Surface to be painted and packed in bundle, wrapped with plastic film
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:

We also supply Hot dip galvanized surface of this 40x40x3mm x 2.4 meters square steel tube.

Usage of this 40x40x3mm steel pipe is a reinforced frame for container loading.  Or other purposes.

BV third party inspection report

Material grade:

CONTAINER SHIPMENTS:

An Introduction of our hot dipped galvanized steel pipe:
Commodity:  HOT DIPPED GALVANIZED STEEL PIPE
Dimension range:  SHS: 25X25-400X400mm, RHS:25X50-200X400mm,
                                 CHS:OD25-323mm
Wall thickness:  2.0-20mm
Length:  1-12meters( normal length6000mm, accept fixed length)
Material:  Q195 and S235 Mild Steel , S355 Low Alloy steel ,ASTM A36, SS400,
                 A500 Gr.B,St52 etc
Surface treatment:  Hot Dipped Galvanized surface, Zinc:240g-280g
                                  ( or required Zinc coat)
Thickness tolerance:  +/- 0.05mm
OD. Tolerance:  +/- 0.05mm
Technique:  Hot rolled & Hot Dip Galvanized
Application:  construction,Fluid hose,Steel structure, Road sign, light industry, agriculture, animal husbandry etc.

Parts dimensions of Steel hollow section 
Process flow of Rectangular and Square steel pipe:
Company introduction:
QINGDAO WANRUNDA IMP AND EXP CO.,LTD is a special and experienced steel supplier and exporter, can manufacture according to ASTM,JIS,DIN,API standard. We have exported to Australia, Doha, Sri Lanka, India, Turkey, Kyrgyzstan, Russia, Canada, Poland, Middle east countries and African countries, We got very good reputation from all our cooperative clients;
We mainly manufacture and sale various kinds of steel pipe, include Welded pipe/Galvanized steel pipe/Pre-Galvanized steel pipe/Square and Rectangular hollow section/Furniture pipe/Warmhouse booth pipe/stainless steel pipe etc ; Steel coil include Pre-Galvanized steel coil and stainless steel coil; Steel profile include Angle steel/Channel steel/Steel checkered plate/Square steel/C-channel steel etc. We also deal with assorted products, such as Flange/Steel hinge/Plastic pipe plug and cap etc.