Black Square Hollow Steel Pipe

Shape

Rectangular Tube:20*30-600*800mm

Square Tube:20*20-600*600 mm

Thickness

1.0-35 mm

Material

GB/T3094-2000  GB/T6728-2002

Q195,Q235,Q275,Q345,20#,45#                                       

EN 10210,EN10219

S235,S355

DIN17100

St33,St37,St52

JIS G3466

SS330,SS400,STK490

ASTM A500,A513,A106 

GR.A,GR.B,GR.C,GR.D                  

Surface

Bared, Oil, Galvanized, Paint

Quality Systerm

We are ISO,CE certificated.Our Factoty has 18 years' experience in manufacturing square and rectangular tube.Our products have been exported to America,Britain,Saudi Arabia,Malaysia,South Korea and many other countries.

Inspection

After we finish manufacturing,we will inspect steel tubes.

a.Technical Properties:Dimensions,Flattening Test, Bending Degree, Twist,Radius 

of Corner,We could guarantee all the technical requirements according to standard.

b.We could provide MTC(Including Chemical composition Mechanical property),these 

could guarantee the material.

c.Welcome our customer to our factory to inspect goods.If you need,you also could ask 

third party(SGS,BV) to inspect goods.

All the measures to show our determination to manufacture high quality steel tubes.

Test

Our factory has own lab room which will test steel tube after manufacturing.

This guarantees quality of steel rube.

1.Chemical Component Analysis (C,Si,Mn,S,P)

2.Mechanical Properties

 (Tensile Strength, Yield Strength, Elongation )

MTC is supplied.

Third party inspection: BV,SGS

Delivery time

Pipe in stock:Within 7-10 days

Production of Square and Rectangular Pipe:Within 15-30 days

In order to make best quotation, Please kindly indicate length, width, thickness and the standard, 

material you required.