Black Square Galvanized Steel Fence Posts Cold Roll Forming With ERW Welding

High quality black square / rectangular steel pipe , galvanized square steel tube

Square tube is a kind of name of square pipe, which is equal length of steel

pipe. It is a strip of steel through the process of processing. Change the

square pipe: generally it is to take the strip steel through unpacking,

smooth, coil, welding to form a round tube, then the round tube rolled into a

square tube and then cut to need length.

processing method: cold roll forming with ERW welding

material: Low carbon hot rolled coils

steel grade: Q235B~345B

surface treatment: hot dip galvanizing

Application: building materials, construction materials.

Company imformation



JiangSu Guoqiang Zinc Plating Industrial Co.,Ltd. Our company established in

1998.ranked among top 500 private companies of china .its totally 800.000sqm area

with more than 3000 empolyees .total output will exceed two million tons in 2017.

its the   biggest manufacture of highway guardrail and solar panel braket in china .

the biggestmanufacture of ERW tubes .hot dip galvanized tubes in east Pat of china

as well as hot  dip galvanizing processing .jiangsu guoqiang has more than 10 Lines of cold forming

processing .producing various kind of cold formed profile .it has 22 lines of hot dip

galvanzing .other products include spiral welder pipe .electricity Tower .highspeed rail

noise barrier etc.products already sold to around the world for more than 10 years

.jiangsu guoqiang has won good reputation with its good quality product but fair price .







Production lines:

Welded steel tube production: 12lines

Cold forming produciton: 8lines

Zinc coating produciton: 22lines



Powder coating produciton: 2 lines

Sheet pile: 1 line

spiral welded pipe: 3 lines







High quality and good price ! If you have problems


please do feel free to contact us for detials!







products already sold to around the worlds for more

than 10 years