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Manufacturer of for Seamless Square Hollow Section Thickness Wall Welded Square Steel Pipes supply to Turks and Caicos Islands Manufacturers

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    Unit Price: USD 600 / Metric Ton
    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF
    Min. Order: 1 Metric Ton
    Delivery Time: 7 Days
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Manufacturer of for Seamless Square Hollow Section Thickness Wall Welded Square Steel Pipes supply to Turks and Caicos Islands Manufacturers

 The company's production equipment is the present domestic most advanced with three roll mandrel rolling united .With advanced technology, sophisticated production equipment, preferable testing equipment The overall technical equipment reaches the domestic advanced level, the production product has the high rolling precision , the performance is superior, the wall thickness is uniform, the exterior surface is smooth, the specification scope is wide and so on the advantages. 

Product Description

Jinan Xin Jiyuan has two production lines , and we specialized in manufacturing the full size of square tubes and rectangular tubes:20X20-600X600mm,square tubes,20X30-600X800mm rectangular tubes ,for more than 20 years since 1997 .

Thickness Wall Welded Square Steel Pipe  Product Description:


  Thickness Wall Welded Square Steel Pipe






3-12m or according to per request




Q195-Grade B, SS330, SPC, S185

Q215-Grade C,CS Type B, SS330, SPHC

Q235---Grade D, SS400, S235JR, S235JO, S235J2

Q345---SS500, ST52, ST37

10#,20#,45#, etc



Surface treatment

1, Oiled
2, Galvanized

3, Painting black
4, According to the customers` requirement


1.Chemical Component Analysis (C,Si,Mn,S,P)

2.Mechanical Properties (Tensile Strength, Yield Strength, Elongation )

MTC is supplied.

3.Third party inspection: BV,SGS




1, Big OD: in bulk

2, Small OD: packed by steel strips

3, Plastic bags

4, According to customer`s requirements


Normally 10-20 days after get deposits or according to quantity



1.large inventory
2.high quality,low price
3.good after-sales service
4.short delivery time


I grade product Ceq(%)

Yield Strength Grade








Note: In order to improve the performance of steel,390 could add the microelement such as V, Nb, Ti, Mo and N etc.

Mechanical Property: 

Yield Strength Grade


Yield Strength

Tensile Strength (Mpa)


(20°C) Impact Value J






















Surface Qualty:

1.Cold bending section steel surface can not have bubbles,cracks,inclusions and transverse stratification,wrinkle,buckle and so on. Allow slight pit,convex,indentation,scratch and presure into the iron oxide,but is not greater than 10% of nominal wall thickness.

2.Surface defects allowed use grinding method to clear up,but after cleaning the thickness should be no less than minimum allowable thickness.

3.If have special requriements on surface quality of cold bending section steel ,determined by supply and demand.

Welding Quality:

1.Welds of cold bending section steel shall not be skip welding,lap welding and burn through.

2.Weld flaw allowed repair welding and grinding,but  after welding and griding shold reach requirements specified in this standard.

3. Burrs around welding should be removed, burrs inside seams do not clear up,when have special request determined by supply and demand.

Thickness Wall Welded Square Steel Pipe  Product Photo Show:

Welded Steel Square Pipes

Welded Steel Square Pipes

Welded Steel Square Pipes


Welded Steel Square Pipes

Packaging & Shipping


Welded Steel Square Pipes


Welded Steel Square Pipes


Thickness Wall Welded Square Steel Pipe  Product Application:

1. Machinery manufactureglass 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.

Welded Steel Square Pipes 

Company Information

Company Introduction :

Our company focuses on the usage, development and research of square and rectangular tubes over the passed 20 years. We purchased three production lines at the cost of over 16 million for expansion of the new factory in 2012, These production lines make full-sizes of square tubes and rectangular tubes: 20x20mm-600x600mm, 20x30mm-600x800mm, Thickness:1.0mm-35.0mm,over 2800 kinds of specifications.

Executive standard GB/T912-1989 EN10025-1993 DIN17100-80 ASTM-A106/A500 JISG3466
Steel grade Q195 Q215A Q215B S185 St33   SS330
Q235B S235JR St37-2 GR.A SS400
Q235C S235JO St37-3    
Q345B S355JRH St52-2 GR.B STK 490
Q345C Q390B Q390C S355JOH St52-3 GR.C  
Q345D S355J2H   GR.D  
20#     GR.B  
OD range 20mmX20mm-600X600mm
Wall Thickness 1.0mm-35.0mm

      Welded Steel Square Pipes

We insist on offering high-quality creation with superior business enterprise concept, honest revenue plus the greatest and fast service. it will bring you not only the high quality solution and huge profit, but essentially the most significant is usually to occupy the endless market for Thickness Wall Welded Square Steel Pipes. The product will supply to all over the world, such as: Kyrgyzstan,Tonga,Russian Federation. We have 48 provincial agencies in the country. We also have stable cooperation with several international trading companies. They place order with us and export products and solutions to other countries. We expect to cooperate with you to develop a larger market.

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