• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Standard: BS, BS EN10219, ASTM A500 , GB/T 6728 , AS/NZS 1163
  • Grade: A53-A369, Q195-Q345, ST35-ST52, A106(B,C), Q195, Q215, Q235, Q345, ST35, St37, St52
  • Thickness: 1.0 - 19.05 mm
  • Section Shape: Square and Rectangular Hollow Section
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Application: For construction, steel structure
  • Technique: Hot Rolled
  • Certification: CE,ISO 9001:2008 certification
  • Surface Treatment: Black pipe, surface treatment according to customers' requirement
  • Special Pipe: Thick Wall Pipe
  • Alloy Or Not: Non-alloy
  • Product Describe / Name: Iron pipe Square for designed gate / window ects.
  • Reprocessed Surface Treatment: anti-rust oiled , galvanized , color primer painted
  • Reprocessed pipe: cut to required length , perforate holes, weld plates, ects
  • Sample Service: Free Sample, Charge INT'L courier
  • Steel mechanical property 01: General min. Yield strength 195-235Mpa, or 345Mpa
  • Steel mechanical property 02: General min. Tensile strength 350-640Mpa

Packaging & Delivery

Packaging Details 1. in bulk for big size
2. in bundles with strip for small size
3. wrapped in PVC cloth
Delivery Time 3 days for sample;30 days for production
Product Description

    Iron pipe Square for designed gate / window / house structure / construction    



 Production Line Show    Youfa Brand Square and rectangular Steel Pipe / Tubes are producted in the factory. The first branch  factory is 67000 square meters. 8 production lines for diameter 20x20mm to 250x250mm pipe. Two inner warehouse stocks these pipes. The second branch factory is 80000 square meters, specialized in large diameter square and rectangular pipe / tube, diameter 200x200-400x400mm. 


 Reprocessing of Square and Rectangular Steel Pipe We supply the pipe according to customers' special requirement of reprocessing , such as

1) perforated holes on pipe,

2) color primer painted or powder coated the pipes,

3) galvanized square pipe,

4) weld steel parts on pipe, weld steel plates on pipe,

or other reprocessing according to customers' requirement


Packaging & Shipping

 Packing and Shipping  of square pipe /  square tube / square hollow section / square and rectangular pipe

1. general package: in bundle, steel strip packed

2. anti-rust package: in bundle, PVC plastic package

3. to save container room and space: small diameter pipe insert in big diameter pipe

4. large quantity by bulk shipment

5. other package according to customer's requirement



 Usage and Application  of Square Pipe / Square Tube / Square Hollow Section / Square and Rectangular Pipe for construction, building, steel post, greenhouse frame, fence post, scaffolding pipe , machinery parts, tralier frame material, sporting equipment parts , steel shelf, steel furniture,ects



 Answers of common question from customers for square pipe / square tube / square and rectangular holoow section

1. Q:Are you a factory or trading company?

 A:We are a factory. We also have cooperated factory doing other steel business.

2. Q:Where is your factory located? How can I visit there?

A:Our factory is located in Tianjin City, China, about 30 minutes from beijing by train.All our clients from home or abroad are warmly welcome to visit us!

3. Q:Can I get some samples?

A: Yes,we are honored to offer you samples.

4. Q:How does your factory do regarding quality control?

A:Quality is priority. Our factory has gained BV, SGS authentication. We guarantee the goods out from our factory 100% qualified.And Each Process, we have very strict operation and arrange 2 techinians to inspect. After the products are finished, we will make the last test to pick up the unqualified products

5. Q: How long does your warranty?

A: we can assured the quality within 90 days after your receiving the cargoes.

6. Q: What is your MOQ?

 A: as long as hold one container ,we can accpet the order.

7. Q: What is your payment ? 

A: if the quantity more than 100 tons , 100% l/c at sight can be accpeted. Less than 100 tons ,30% t/t in advance ,70% balance agianst with B/L copy.


 Contact to Ms. Amanda Liu for more details of product, solve your question or get a quotation. 

Add Amanda Liu to Linkedin, learn Chinese steel market trend, steel price list, or factory news.


Company Information
Tianjin youfa steel pipe group co.,ltd was found on July 1st, 2000,with the headquarters located at the largest welded pipe production base in China -Daqiuzhuang village,Tianjin city,which is the largest -scale steel pipe manufacturing enterprise producing many kinds of pipes products ,such as ERW steel pipe ,hot-dipped galvanized steel pipe ,square and rectangular steel pipe,spiral steel pipe and steel-plastic complex steel pipe.Now owning two brand “Youfa ’and “Zhengjinyuan”,total 152 production lines with 9 sub-companies ,more than 10000 employees and have two national accredited laboratory.Products are exported to more than 100 countires,such as North America ,South America ,Europe, Africa,Southeast Aisa,Middle East .

Youfa steel pipe used for water conservancy project, fire protection engineering, gas engineering,At the same time has led the drafting of the 7 countries standard, but also has a number of technical invention patents.

In the future, hand in hand, go ahead, for the steel pipe into a respected enterprises and make unremitting efforts to happiness!



Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
Trade Assurance
China (Mainland) | Manufacturer, Trading Company
Transaction Level:
Supplier Assessments:
4 Transactions 110,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
Top 3 Markets:
Domestic Market 100.00%
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $95,000
Learn More