1.All the steel pipes used are high-frequency welded pipes, all the components are made of Q235, in line with GB700-88.
2.The connection between the pipe and the pipe and the connection between the pipe and the connecting piece adopts butt welds or full circumferential welds.
3.All butt welds must be cut-through welds. These welds are not specified and the weld grade is Grade 3.
4.Where the weld is not a fillet weld, the weld foot is not less than 4mm. All exposed mouths have sealing plates.
5.Bolts are galvanized ordinary large hex head bolts, in line with GB5780-86. The nut meets GB41-86.
6.The membrane fabric is made of PVC membrane material with PVDF coating on the surface.
7.The wire rope material conforms to the universal wire rope standard "GB/T8918-196" and its surface is galvanized.
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