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Quick Details

  • Standard: ASTM, DIN, GB, JIS
  • Grade: Steel,Q235(equivalent to ASTM SA36) , Q345(equivalent to ASTM A572)
  • Dimensions: Q235 , Q345,to order
  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: STL
  • Model Number: customized
  • Type: Light
  • Application: Frame Part
  • Surface treatment: hot dip galvanized or painted
  • Certification: ISO , ASTM
  • Section: Any product shape can be provided according to customer's requirements
  • Welding technology: fillet welding by electronic arc welding , gas shielded welding
  • Welding testing: Ultrasonic testing , X-ray testing
  • wall: corrugated steel sheet or sandwich
  • door: sliding door or rolling door

Packaging & Delivery

Packaging Details Standard export sea worthy packing or package according to your demands
Delivery Time Within30 days after receiving the product advanced payment




Product Description




 steel structure Fabrication decription:

Main steel 

Column and beam (H-section),square steel tube , C/Z purlin

Connection Method

Welding or hot rolled or cold rolled

Wall & Roof

EPS, Rock wool, PU sandwich panel, Corrugated steel sheet with fiber glass wool


Rolled up door or sliding door (sandwich panel)


Plastic steel or aluminum alloy window 

Surface Treatment

Hot dip galvanized or painted (all color can custom)


Foundation bolt (M24 , Q235),


High strengthen bolt(M20x70)


Normal bolts(M16x50,M12x30)






Company Introduce:


Qingdao steel trading Co., Ltd is a steel structure product manufacturer . 

The product is high qualified with ISO quality control. 

The leading time is on schedule with good logistic service. Monthly capacity is about 2,000.00 tonnage. 

Brand name


Item  name

Steel structure 


Q235(equivalent to ASTM SA36), Q345(equivalent to ASTM A572)


Any product shape can be provided according to customers requirements


ISO quality system , Chinese GB50221-2001

Sand blast

Sweden SA 2.5 sand blasting 

Welding technology 

Single level butt welding , fillet welding by electronic arc welding ,

gas shielded welding 

Surface treatment 

Hot dip galvanized , epoxy zinc rich primer

Standard:  ISO1461(1999) , JIS H 8641-1999 , ASTM A 123/A 123M-02

Welding testing 

Ultrasonic testing , X-ray testing

Manufacturing technology 

Cutting , drilling , assembling , welding , rectification , polishing ,

 hot dip galvanized or paint , packing etc 

The reason for choose each metal 

1,Workshop pre-install

2,Professional service and on site guidance 

3,Ensure the product high quality 

4,Continuous welding on both sides of each pieces

5,Make every beam on the bottom plate for being saw after being galvanized 

6,Send pictures to buyers by mail during the products being processing

Surface treatment 

AHot dip galvanize

1, Standard: JIS, DIN, ASTM B695-2000

2, Hot dip galvanizing hole cutting good looking on surface

3, Galvanizing process:

Steel structural components →Degreasing →Rinsing→ Galvanizing→ Inspecting →Finished Product


1, Primer paint one coat 20-30 um

2, Middle paint two coat 40-60 um

3, Finish paint one coat 20-30 um

Paint Type: 1,red primer, 2,zinc primer, 3,Alkyd primer

Oversea Project 

Steel structure building sales to: North America, South America,  Southeast Asia, Africa, Oceania, Mid East. 


Welcome customers all over the world to visit our factory to have face to face business communication.



Our Products :






Packaging & Shipping





 Welcome to constract us  if you have interest in our product ,  we will provide you professional online guidance !


  Wish cooperation with you !


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Trade Assurance
China (Mainland) | Trading Company
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1 Transactions 3,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $41,000
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