Material grade

1. Carbon structural steel: Q235.

2. High-strength structural steel :Q345

3. Special purpose steel

Structure Assembly

1.Steel Framework:

Component: H-Column, H-Beam & C/Z-Purlin

Connection of steel structure method: Welding, Bolted

2.Surface treatment: Painting, Galvanized

3.Roof &Wall: colored steel tiles or colored steel sandwich panel as per

  request

processing technical specifications

1.Steel yield strength and tensile strength measured values of the ratio of the measured  

   values should not be greater than 0.85

  Steel should be obvious to yield level,while elongation should not less than 20%,Should    

   have good weldability and qualified steel impact toughness,Material all need warranty

   and the physical and chemical test report,The ball must hit number and all products

   shall comply with the quality of the steel rack industry standards.

2.Space rods, bolted ball, bearing, bracket, sleeve, and anti-corrosive paint twice after

   sandblasting derusting

3.Space frame components (including bolted ball, bars, high strength bolts, bearings, etc.)

  should be made in the factory with Inspection records,Ball and bolt processing, comply

   with the machinery industry standard on its own processing or purchased and chosed

   by the manufacturer,But all should meet the requirements of space frame design and

   construction stage of stress, deformation, etc

4.Components welding should use equal strength, no slag weld nor bubbles, weld

  strength should be higher than the parent metal,Bearing ball must use E506 or E4303

electrode for welding, and only could be welded when heat reach o 150 degree.

5.Weld quality gradeLButt welding for level 1, Angle seam welding for level 3