Hot Roll Square Structural Steel Tubing

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We can proceed the payment after received material at your site

in 180 days max.

Contact person:

MS Gillian

Cell/ Whatsapp: +86-18132295070



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You can make an inquiry about this product.

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  • On-time shipment and pre-shipment product quality safeguards.
  • Payment refund up to 100% of the Trade Assurance Order Amount.
  • Trade Assurance coverage.

Hot Roll Square Structural Steel Tubing

Hot Roll Square Structural Steel Tubing, is widely used in kinds of industry and building areas all over the world.It can be used for Structure ,Building,Decoration Machinery and so on.

Square steel tube
OD(mm) WT(mm) OD(mm) WT(mm) OD(mm) WT(mm)
20*20 1.0-2.0 80*80 1.5-6.0 180*180 2.5-15.0
25*25 1.0-3.0 90*90 2.0-6.0 200*200 3.0-15.0
30*30 1.2-3.0 100*100 1.5-13.0 220*220 3.5-12.75
40*40 1.2-5.0 120*120 2.5-15.0 250*250 4.5-12.75
50*50 1.2-6.0 130*130 2.5-15.0 300*300 4.0-12.75
60*60 1.3-6.0 140*140 2.5-15.0 350*350 6.0-12.75
70*70 1.3-6.0 150*150 2.5-15.0 400*400 6.0-12.75
75*75 1.5-6.0 160*160 2.5-15.0 450*450 6.0-12.76


Hot Roll Square Structural Steel Tubing

While delivering the quality product we try to keep our customer satisfied by taking all the measure require to be taken from the time of manufacturing the product to supplying the product. To verify that the supply made to our clients exact specifications, our quality control team combines technical expertise, knowledge of industrial standards and the latest inspection tools and machines to meet all requirements. Particular attention is paid to high quality, tolerance and traceability.There shall be no compromise with the quality. We take all efforts from from our side to deliver products on time as required by the customer.



Chemical Composition Mechanical Property
  C% Mn% S% P% Si% Yield Point(Mpa) Tensile Strength(Mpa) Elongation(%)
Q195 0.06-0.12 0.25-0.50 <0.05 <0.045 <0.3 >195 315-430 32-33
Q215 0.09-0.15 0.25-0.55 <0.05 <0.045 <0.3 >215 335-450 26-31
Q235 0.12-0.20 0.30-0.70 <0.045 <0.045 <0.3 >235 375-500 24-26
Q345 <0.20 1.0-1.6 <0.04 <0.04 <0.55 >345 470-630 21-22


Hot Roll Square Structural Steel Tubing

Black annealed steel pipe: It is made from cold rolled black annealed steel

strips, formed after electrical resistance welding. Black annealed steel pipe are widely used as furniture structure, such as desk, table, bed, and other household shelves. This kind pipe can be bend, painted or powder coated.

Hot rolled steel pipe: this is the most common pipe in China, formed from hot rolled steel

strips after erw welding. Hot rolled erw pipe is widely used as construction and machinery structure, the most widely used material for this kind pipe is Q235 or Gr.B.

Hot galvanized steel pipe: It is made from cold rolled bright annealed steel strips, formed

after electrical resistance welding. Bright annealed steel pipe is widely used as precision car or auto parts or decorative products. It is with good surface, which could be chromed and painted. And this pipe could be bent according to requirements.


Hot Roll Square Structural Steel Tubing

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

(2).Roads and Bridges: railway, 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.

Our Products are widely used in tap water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction etc. Can be used as low pressure fluid pipe, oil & gas transportion pipe, steel structre, beam etc


Global Business

1. More than 10 years of sales experience

2. Product exported more than 150 countries

3. Arrange to produce according yo customer's request

Fast Delivery

1. AA level customs broker,Faster through

2. 20 years of experience in the freight forwarding company

3. Delivery Detail: 10-20 days

Trusted Quality

1. Certificate: API, CE, ISO9001.2000.MTC etc

2. Inspection: BV,SGS,others is avaliable.

3. A complete testing system and testing equipments

One-Step Service

1. Free sample can be provided

2. Small order is acceptable

3. OEM is acceptable

4. Any third party testing is acceptable




  • Phone0086-317-2159105


  • Phone0086-317-2159106