1.Common type of the industrial building?

Reply:Portal frame is the usual type in the industrial workshop and warehouse shed.Other types also could be designed and manufacturer as per clients'  request.

2.What’s the quality grade of the steel structure components?

Reply:Q345 is used for main steel structure,Q235 is used for secondary steel structure.

3.How about the delivery time?

Reply:Usually,within 25-60 days after the order confirmed,also depends on the fabrication quantity.

4.How about the derust grade?

Reply:Ball blasting Sa2.5 on main steel structure manual derust St2.0 on secondary steel structure.

5.What kind panel used for the roof and wall?

Reply: Color corrugated steel sheet and sandwich panel could be used.Sandwich panel

performs well on the heat insulation,sound insulation.Common sandwich materials are EPS,glass wool and PU.

6.How to install it?

Reply: We will furnish you the detailed construction drawing and the construction 

manual which could help you to erect and install the building step by step.We also could send the engineer your local to help you if needed.

7.Maintenance:

Reply:Finish paint need be done after the frame installed,and do it again after 6-8 months.So the surface will stay m ore time.

Company Name:Director Co.,Ltd

Qingdao Director Steel Structure Co.,Ltd

Add:Room 1102, Unit A, No.1 Building, Haili Plaza, No. 917, Tongan Road, Qingdao, China

Web: ;  

Contact Person:Alison Zhang

Tel: 0086-532-66716752  

Fax: 0086-532-66710826

E-mail: info(at)

Whatsapp & cell: 0086-13280803375

Skype: Alison.zhang99

Pls kindly scan Quick Response (QR) code(our website),you could get more information by cellphone.