This project is a special-shaped space frame / height is 25.66 meters / total length 77.4 meters / total span 33.3 meters
The steel pipe adopts Q355B steel, seamless steel pipe or high frequency welded pipe (GB/T 700).
High-strength bolts use 40Cr quenched and tempered heat-treated according to "Technical Conditions for High-Quality Carbon Structural Steel Structures" GB/T 16939, the performance of diameter <M36 is 10.9S, and the performance of diameter M36 is 9.8.
The steel ball is made of No. 45 steel forgings in accordance with "Technical Conditions for High-Quality Carbon Structural Steel" GB 699, and the yield strength is 360N/mm2.
The sealing plate of the cone head is made of Q355B steel, and the cone head is made of forgings.
The threadless nut is made of Q355B steel forgings. When the diameter of high-strength bolts is > M30, use 45-gauge steel forgings.
Fastening screws are made of 40Cr that has been quenched and tempered. The support is made of Q355B steel, and the support is made of Q235B steel
Welding rod adopts E43XX series; E50XX series (for welding of bolt ball and bearing rib)
Purlins are made of Q235B C-shaped steel.
Ordinary bolts are made of grade C rough bolts made of Q235B steel that meets the requirements of current national standards, with a performance grade of 4.8.
Post time: Mar-10-2022