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Mild Steel Square Pipe for Structural Frame

  • Mild Steel Square Pipe for Structural Frame
  • Mild Steel Square Pipe for Structural Frame
  • Mild Steel Square Pipe for Structural Frame
  • Mild Steel Square Pipe for Structural Frame

Mild Steel Square Pipe for Structural Frame

    Payment Type: L/C,T/T,Paypal,Money Gram,Western Union
    Terms of Trade: FOB,CFR,CIF,FCA,CPT
    Min. Order: 1 Metric Ton
    Delivery Time: 10 Days
    Packaging: standard export packing, also could design as to customer\'s desire
    Productivity: 15000000MT
    Brand: XJY
    Transportation: Ocean,Land,Air
    Place of Origin: Shandong, China (Mainland)
    Supply Ability: 15000000MT
    Certificate: ISO9001
    HS Code: 73066100
    Port: Qingdao China,Tianjin

Product Description

Mild Steel Square Pipe for Structural Frame

Our mild steel tube, square and rectangular box section products come in a variety of grades, sizes and finishes and we also offer a quick turnaround cutting service, so if we don't stock the exact hollow steel section you are after, we can cut to order and ship your steel out to you.


GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G 3466, DIN EN 10210, GB/T178-2005


Q195, Q215, Q235, Q275, Q345, 20#, 45#, Stainless steel, Seamless steel, Alloy steel.


Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment.


Hot rolled, Cold rolled, ERW, High-frequency welded.


(1).Machinery manufacture: glass machinery, agricultural machinery, textile machinery, papermaking machinery, food machinery, electrical equipment, sanitation equipment.

(2).Roads and Bridges: railway, aviation, expressway, overpass, road fence, traffic signs.

(3).Construction engineering: steel structure construction, sports venue, three-dimensional garage, exhibition hall.

(4).Decoration: wrought iron doors and windows, outdoor advertising, pavilion and vestibule, glass curtain wall.

(5).Transportation: automobile manufacture, ship manufacture, container, tricycle, tower crane.


Assessment Criteria

First Grade

Second Grade

Wall thickness/t

4mm≤t≤10mm ±8%t

4mm≤t≤10mm ±8%t

10mm≤t≤22mm ±6%t

10mm≤t≤22mm ±6%t

Suitable for flat parts

Suitable for flat parts

Right Angle



Corner radius of circular arc




Concave and convex degree

≤5% side length

≤6% side length

Bending degree

≤1.5mm/m, total bending degree

≤0.15% specified length

≤2mm/m, total bending degree

≤0.2% specified length

Distortion degree



Scale accuracy

Ordinary precision 0- +50mm

Ordinary precision 0- +70mm

Fine scale 0- +5mm

Fine scale 0- +15mm

Cutting quality

100mm≤side length≤300mm

100mm≤side length≤300mm

Cutting slope≤3mm

Cutting slope≤4mm



Cutting slope≤3mm

Cutting slope≤6mm

End without cutting burr

End with few cutting burr


Yield Strength Grade

Wall thickness(mm)

Yield strength


Tensile strength



Impact work




















8.What advantage do we have?

  1. Our factory established in 1997, we have 16 years experience in this area.
  2. We engaged in research square and rectangular steel tube at the beginning of company established, now our technology is far ahead.
  3. We have a leading international, domestic origination of production units.
  4. We have passed the standards of ASTM A500, JIS G 3466, DIN EN10210, GB/T178-2005, GB/T 3094-2000 and GB/T6728-2002.
  5. Our products in different sizes, and different thickness (1.0mm-32mm), can satisfy your desire a station buy need.
  6. Perfect after-sale service to solve your worries.


How to contact me?

Email: 554717325(at)

Skype: sdxdcathy






Jinan Xin Jiyuan Special Section Tube Co., Ltd is the holding company of Jinan Xin Fangyuan Special steel tube Co., Ltd founded in 1997. Our company located in Dawei Industrial park, north end of Second Ring Road, Jinan City, closed to Beijing-Shanghai expressway exit, transportation is very convenient, and also has a good production and operation environment. Our company focuses on the usage, development and research of square and rectangular tubes over the passed 20 years. At the same time we also pay attention to create platform and promotion for square tube, rectangular tube and other special tubes. All these make us stronger and more popularity in this area. As a result of our efforts, finally make the products specification, size and material extending.

Our company upholds the business philosophy of [ Because of Single-minded, so professional", and try our best to make our company into the most complete specifications and most verities basic in China. Make truth of [Buy square tubes do not need travel, Xin Jiyuan could serve you all" one- stop buy neat business objectives. Our company purchased three production lines at the cost of over 16 million for expansion of the new factory; they have been gradually put into operation. These production lines make full-sizes of square tubes and rectangular tubes: 20x20 -600x600 square tubes, 20x30 - 400x800 rectangular tubes, Thickness: 1.5mm -32.0mm, over 2800 kinds of specifications, Material: Q195, Q215, Q235, Q275, Q345, 20#, 45#, stainless steel, seamless pipe, alloy steel etc. We could produce diamond, triangular, pentagonal, hexagonal, fan etc. special sizes, also could tailor-made according to customer`s drawings and dimensions. Our products of large-diameter, thick-walled square or rectangular tubes fill the blank of domestic and abroad market.
Our products are widely used in large scale steel structure engineering, machinery manufacturing, shipbuilding, bridges, construction industry, metallurgical industry, automotive industry, railways, highways, aviation, container, furniture, decoration and many industries. The company regards product quality as the lifeblood of the enterprise, uses personality make products, guarantee quality of products strictly. We have passed ISO9001:2008 quality management system certification and our goods have passed Europe Union EN10210-1:2006, 10219-1:2006 CE certification in 2012. Company resort more variety, large inventory, high quality, low price, short delivery time and good after-sales service, and many other competitive advantages, to become designated supplier of many large enterprises. Customers throughout our country in more than 20 provinces and cities and exported to the United States, Canada, Russia, India, Malaysia, Europe and other countries and regions.
Our chairman and general manager Changxing Hu, heartfelt thanks friends from all walks of life for many years trust and support, all staff of Xin Jiyuan will serve you as usual, and common development, win-win cooperation, good faith together with you. Let`s create brilliant tomorrow!

Company Info

  • Representative: Xu Miao
  • Product/Service: Shs And Rhs , Steel Hollow Section , Square Steel Pipe , Construction Steel Pipe , Steel Profile , Galvanized Steel Pipe
  • Capital (Million US $): 3000000RMB
  • Year Established: 2005
  • Total Annual Sales Volume (Million US $): US$50 Million - US$100 Million
  • Export Percentage: 21% - 30%
  • Total Annual Purchase Volume (Million US $): Above US$100 Million
  • No. of Production Lines: 2
  • No. of R&D Staff: Fewer than 5 People
  • No. of QC Staff: Fewer than 5 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 5,000-10,000 square meters
  • Factory Location: NO.8299, West of Jingshi road, Changqing District, Jinan City, China
  • Contact Person: Ms. Cathy Zhao
  • Tel: 86-531-85736315
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