Steel rectangular hollow section pipe q345 square and rectangular erw black pipe

50-99 Tons
100-299 Tons
>=300 Tons
Min. Order
50 Tons
Company Information

Tianjin Yuanxingtai International Trade Co., Ltd.

CN Trading Company
Response Time
Response Rate:
6 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Port: Tianjin Port, China
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 150000 Ton/Tons per Year
Zinc-coating: 30g/m-200g/m2
Usage: Mechanical & manufacture, Steel structure,construction
product name: GI square steel pipe / tube
Grade Group: 10#-45#,16Mn,Q195-Q345,ST35-ST52
Delivery time: Delivery10-35days after receive the deposit
Place of Origin: Tianjin China
Tolerance: ±3%
Steel material: 16Mn, Q195-Q345, 16Mn, Q195, Q215, Q235, Q345
Grade: 10#,20#,16Mn,Q235,Q345,Q195,Q215,St37,ST35
Standard: BS,ASTM,ASTM, BS, JIS, ASTM A513-2007, BS EN10219, JIS G3466
Supply Ability: 1500000 Ton/Tons per Year
Processing Service: Bending,Welding,Decoiling,Punching,Cutting
Standard2: BS EN10219,ASTM A106-2006,ASTM A671-2006,ANSI A210-1996
Certification: CE
Section Shape: Square
Payment Terms: L/C , T/T
Outer Diameter: 20*20-500*500mm 20-110mm
Thickness: 1.3 - 20 mm
Type: Square Tubes
Alloy Or Not: Non-alloy
Surface Treatment: Galvanized
Technique: Hot Rolled,EFW, welded, galvanized, hot dipped
Application: Structure Pipe
Certificate: ISO9001 CE
Packaging Detail: Small OD: packaged by steel strips Big OD: in bulk Woven cloth with 7 slats According to the export standard or as customer's requirement

 Product name

Square steel pipe

Outer Diameter


Wall thickness



5.8m, 6m, 12m or other lengths as customer's requirement

Supplying ability

1,500,000 tons per year

Surface treatment

oiled, non-oiled, black painted

Section shapes



ASTM A500, EN 10219, GB/T 6728

Technique method

ERW, welded, cold formed, hot rolled


CE, ISO9001



Small OD: packaged by steel strips

Big OD: in bulk

Woven cloth with 7 slats

According to the export standard or customer's requirement



Steel structure pipe, Building material, Fence pipe, Greenhouse pipe etc

Payment terms

T/T, L/Caea5fwelding-square-black-carbon-rectangular-rhs-hollowa2d8cms-galvanised-rectangular-secton-shape-GI-tubeblack square tube196black square tube95black square tube91black square tube77

Production Flow

welded steel pipe production flow

q195 zinc plated steel pipes tubes

q195 zinc plated steel pipes tubes 


Steel pipe group certification

CE Certification And ISO9001 :2008 Certification

q195 zinc plated steel pipes tubes 

Company Information

Tianjin Yuanxingtai International Trading Co. a subsidiary owned to Tianjin Yuantaiderun Pipe Group Co., Ltd. It is responsible for the export of all of the steel pipe group's products. We are a leading steel pipe producer in China and our businesses have expanded to include logistics and trade.
We have more than 1000 employees including 120 excellent administrators and 85 professional engineering technicians, covering area of 110 acres , with fixed capital of 1 billion US dollars and floating capital of nearly half billion US dollars . There are 30 high frequency welding steel pipe production lines in our workshop and the advanced equipments is entirely controlled by special computers. As one of the biggest manufactures in square and rectangular steel pipes, the output of us reaches to 1,500,000 metric tonnes.

q195 zinc plated steel pipes tubes 

Packaging & Shipping

Steel pipe packing and shipping


1). Big OD: By bulk

2). Small OD: Packed by steel strips

3). Plastic waterproof package

4). According to customer's requirements


q195 zinc plated steel pipes tubes 


Steel pipe FAQ
1.what kind of payment does your company support?
T/T,100%L/C at sight,Cash,Western Union are all accepted.
2.How about the Delivery Time?
The goods will be produced since we get your deposit by T/T or Your original L/C.
For normal size,some stocks in our factory now,we can supply once you need.
3.What is M.O.Q?
Min Order Quantity.Generally speaking,the MOQ is 5 metric ton per size.
4.Do you charge for samples?
According to our company principle,we just charge for samples,you pay for the freight charge.however,we will reture the samples fees back to you during the next order.
5.How to now the Quality Guarantee?
Visit our factory is the best way to konw each other more.
ISO9001:2008 international quality system Certificate and The Third Inspection can prove our quality,we will attach some relevant photos via e-mail so show our factory ,machine and products for you.
6. How about your Feature and Advantage?
Firstly, we are the biggest factory in Tianjin for Square pipe& rectanguar pipe,
andwe do some special service for export: Thread, Oil Coating, Groovy,
Standard Export Packing, Hydraulic Pressure, Automatic painting, stamping,
Steel material and various physics and chemistry property,
zinc ingot element testing service. etc.
7. Can you tell me your main customers' information?
That is our customers' privacy, we should protect their information.
At the same time, please rest assured that your information is also safe here.

Our Service
Steel pipe in Tianjin China
Pre-sale Service
1.Free samples.
2. We have full stock,and can deliver within short time.Many styles for your choices. 
3.OEM and ODM order are accepted, Any kind of logo printing or design are available.
4.Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you
5.All of our products are produce by our professional workman and we have our high-work-effect foreign
trade team, you can totally believe our service. 
6. We have 16 year experience of manufacture and sell steel pipe, we cherish every order from our honor .
After you choose 
1.We will count cheapest shipping cost and make invoice to you at once.
2.Check quality again, then send out to you at 1-2 working day after your payment,
3. Email you the tracking on, and help to chase the parcels until it arrive you. 
Post-sale choose 
1. We are very glad that customer give us some suggestion for price and products.
2. If any question,please contact with us freely by E-mail or Telephone.