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What is the material of scaffolding steel tube?
At present, there are three kinds of scaffolding steel tubes used in China: Q235, Q215 and Q195. There are many kinds of scaffolds made of these materials. The most common ones are cuplock scaffolding, frame scaffolding, tubular scaffolding, ringlock scaffolding, cantilever scaffolding.etc.
In terms of production materials and structure, the materials can also be subdivided in the following ways.
1. Classification according to the material of rod piece
1) A scaffold made of a variety of steel pipes, usually consisting of two or more steel pipes, such as a portal mobile scaffolding.
2) Only one kind of specifications of the scaffolding tube, it USES only Ф 48 x 3.5 electrical welded steel pipe, such as tubular scaffolding.
3) Scaffolding with steel pipe as main part and other shaped steel as auxiliary. Scaffolding made up of steel pipe and other steel rods pieces, such as cantilever scaffolding.
2. Classification according to the way transferring vertical forces through ledger or standard.
1) Force is transmitted by welding line. Most scaffolding ledger connected with standard by the way of welding line. The frame scaffolding is the typical representative.
2) Force is transmitted by means of contact face friction. This steel tube scaffold mainly supports the load by the friction reaction force generated by pressing contact surface at the joints. Tubular scaffolding is the typical representative.
3) Force is transmitted by means of shear resistance of the pin bar. This method mainly use pin bar to pass through the hole of the ledger and standard, so as to achieve the pin bar connection under the action of shear on both sides. This method is relatively rare used.
4) Force is transmitted by means of direct pressure. Ledger is put on the top of standard, such as indoors scaffolding.
As there are many kinds of scaffolding tubes, and different types of scaffolds will have different characteristics. So it is necessary to choose scaffolding system according to the characteristics and purposes of scaffold tubes during construction. The right choice will make the construction more convenient and safe.