$550.00 - $640.00
Min. Order : 25 Tons

China TOP 500 manufacture YOUFA factory EN10219 size 20*20*2.0mm black mild steel s195 square hollow section steel tube

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Quick Details

Port: Xingang,Tianjin
Payment Terms: L/C,T/T
Supply Ability: 80000 Ton/Tons per Month galvanized square and rectangular steel pipe
Company Advantage: Good Quality, Quick Delivery
Secondary Or Not: Non-secondary
Place of Origin: Tianjin China
Tolerance: ±10%
End protector: None OR Plastic wrapped
Grade: Q195-Q345,Q235,Q345,Q195,Q215,A53-A369,A53(A,B),A106(B,C),ST35-ST52,ST42,St42-2
Standard: ASTM,ASTM A106-2006,ASTM A53-2007,ASTM A53M-2007,ASME B36.10M-2004,bs,BS 1387,BS 1139,BS EN 39,GB,GB/T 3091-2001,GB/T 13793-1992,JIS,JIS G3444-2006,JIS G3466,API,API 5L
Material: Carbon Steel
Processing Service: Bending,Punching,Cutting
Payment terms: TT , LC
Section Shape: Square
Certification: ISO9001 ISO18001 CE
Business type: both manufacturer and trade
Outer Diameter: 20*20 - 500*500
Thickness: 1.5 - 20 mm
Type: Square Tubes
Alloy Or Not: Non-Alloy
Length: 1-6m or as your requirement
Product name: 20*20 *2.0 black square hollow section steel tube
Special Pipe: Thick Wall Pipe
Surface Treatment: galvanized
Ends: plain
Technique: ERW
Application: Structure Pipe
Packaging Detail: Packed in bundles with nylon slings 25 tons/container and 5 tons/size for a trial order; For 20" container the max length is 5.8m; For 40" container the max length is 11.8m.
Tianjin Youfa International Trade Co., Ltd.
Manufacturer, Trading Company
Response Time
On-time delivery rate
US$ 5,700,000+
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big factory

Tianjin Youfa steel pipe Group co.,ltd was founded on July 2000, located at Daqiuzhuang village,Tianjin city, which is a large-scale steel pipe manufacturing enterprise producing ERW Steel pipe, hot-dipped galvanized steel pipe, SSAW steel pipe, square/rectangular steel pipe.

Youfa Advantange:

1. 100% after-sales quality and quantity assurance.

     2. Professional sales manager quickly reply within 24 hours.

         3. Large Stock for regular sizes.

             4. Free sample 20cm high quality.

                 5. Strong produce capability and capital flow.

Product Description

China TOP 500 manufacture YOUFA factory EN10219 size 20*20*2.0mm black mild steel s195 square hollow section steel tube

Product Name square and rectangular steel pipe

Square pipe: 20*20mm~500*500mm
Rectangular pipe: 20*40mm~300*500mm


Thickness: 1.2mm~20mm


Length: 2.0m~12m

Material Low carbon steel
Steel Grade Q195 = S195 / A53 Grade A
Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2
Q355 = S355JR / A500 Grade B Grade C
Standard EN10219, EN10210
GB/T 6728
JIS G3466
ASTM A500, A36
Surface Anti-rusty Coating pre-galvanized (Zinc coating: 40-80g/m2)
hot dipped galvanized (Zinc coating: 200-600g/m2 )
Pipe Ends Plain ends
Certificates ISO 9001 / ISO 18001 / ISO 14001 / CE
Packing and Shipment 1. OD 300mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles 
2. above OD 300mm in bulk or according to custom opinion 
3. 25 tons/container and 5 tons/size for a trial order; 
4. For 20" container the max length is 5.8m; 
5. For 40" container the max length is 11.8m.

Construction / building materials steel pipe

Structure steel pipe

Solar structure component steel pipe

Fence post steel pipe

Greenhouse frame steel pipe

Trade terms


Payment terms T/T, LC
Delivery time 15-45 days (based on quantity) after receiving advanced payment by T/T or LC .
Main market Southeast Asia, South Asia, Middle East, Europe, Middle&South America, Africa and Oceania

square pipe




YOUFA Gi shs s355 square hollow section steel tube

square pipe usage

Company Information


Tianjin Youfa steel pipe group have been rated as top 500 enterprises of China in the same industry,and as top 500 manufacturing of china.In 2012, Youfa group was rank No.375 in top 500 enterprises of china,  and No.200 in top 500 manufacturing of china,and No.3 in top 100 private enterprises of Tianjin.

YouFa brand steel pipes have been successfully applied to Three George Project, Pudong International Airport, Capital International Airport, Beijing Olympic Stadium, Shanghai World Expo Exhibition Hall,Jiaozhou Bay Cross-sea Bridge, the tallest building in China-117 Building in Tianjin, Tian'anmen Parade Reviewing Stand, Shanghai Disneyland Park and other national priority projects.YouFa has been recognized as No.1 brand in the industry.

Production Capacity:

Totally 11 factories with 9000 employees.
62 ERW steel pipe production lines
40 hot dipped galvanized steel pipe production lines
31 square and rectangular steel pipe production lines
9 SSAW steel pipe production lines
25 steel-plastic complex steel pipe production lines
12 hot galvanized square/rectangular pipe production lines
3 national accredited laboratory with CNAS Certificates 
1 Tianjin government accreditd technology center


Why choose us ?

1. Experience: 20 years focus on quality,
2. Strength: The company that can produce 10 million tons welded pipe exclusively in the world. More than 12,600,000 tons and 190,000 tons (Annual production and export volume)
3. Professional teams slove all kinds of your problems,
4. Service: 24 hours services quickly reply during the whole business process and after business,
5. Quality: Reliable and World certified. We have two national CNAS certified laboratories, and cooperated with many big steel plate factories and retesting of raw materials, 
6. any size could be customized as per your required,
7. BV,ISO,SGS Certification,
8. free sample,
9. Delivery: Own factory in TianJin! We are near Tianjin port, also have own transport fleet, have the most convenient transport and prompt delivery,
10. OEM  

square steel pipe factory


Strict Quality Control on square hollow section steel tube:

1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK. We own UL /FM, ISO9001/18001, FPC certificates.

quality control


1. Pre-Sales Service
*We can offer one free sample length 20 cm with freight collected, if you want to buy our products and take our price.

2. After-Sales Service
*Quality/Quantity Claims: The Buyer is entitled to make both quality and quantity claim in writing against the Seller within 90 days after arrival at the port of destination.

youfa steel pipe customer



Q:Are you trading company or manufacture?
A:Both. Youfa Group has 4 production area in China.

Q:Can I have a trial order only for several tons?
A:We can ship the regular specifications with LCL service.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free, with the cost of freight paid by customer.
Q:Are you gold supplier and do trade assurance
A:YES. We have strong cooperation with SINOSURE.

Q:How long is your delivery time?
A:Generally it is 3-5 days if goods are in stock. or around 30days if the goods are not in stock and it is according to order requirement.

Q:What is your terms of payment?
A: Payment<=1000USD, 100% in advance.
Payment>=1000USD, 30% T/T in advance ,balance before shippment. Or L/C at sight (For big order, LC at 30-90days can be acceptable)


Any question, pls feel free to contact us.