Galvanized Scaffolding Steel Pipe for scaffolding production
Raw Material: Q195-Q345
Raw Technical: Welded Steel Pipes
Laminating width: Q235, Q345, Q195
Coverage angle: ERW
Outer diameter: 21.3mm-168.3mm
Surface Treatment: Hot dip galvanized, pre-galvanized
Zinc Coating: 40GSM-600GSM
Standard: JIS G3454-2007/ASTM A106-2006/BS1387/BS1139/EN39/EN10219
Scaffolding Galvanized Steel Pipe for Scaffolding System Production
Steel pipes are slender hollow tubes that can be used for many purposes. There are two different methods for producing steel pipes, welded pipes or seamless pipes. We generally use welded pipes to produce scaffolding, and the cost of seamless pipes is too high.
People roll steel strips through grooved rolls into welded tubes, thereby molding the material into a round shape. Next, the unwelded pipe passes through the welding electrode. These devices seal the two ends of the pipe together.
|Welded Steel Pipes
|Q235, Q345, Q195
|Hot dip galvanized, pre-galvanized
|JIS G3454-2007/ASTM A106-2006/BS1387/BS1139/EN39/EN10219
Hot-dip Galvanized Tube & Electrical Galvanized Tube
Normally the scaffolding pipe we use electrical galvanized or hot-dip galvanized tube.
The hot-dip galvanized pipe is to make the molten metal and the iron matrix react to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to first pickle the steel pipe. In order to remove the iron oxide on the surface of the steel pipe, after the pickling, it is cleaned in the tank of ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution, and then sent Hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complicated physical and chemical reactions occur between the steel pipe matrix and the molten plating solution to form a corrosion-resistant zinc-iron alloy layer with a compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, its corrosion resistance is strong.
Uniformity of the galvanized layer: the steel pipe sample shall not turn red (copper-plated color) after being immersed in copper sulfate solution for 5 consecutive times
Surface quality: The surface of the galvanized steel pipe should have a complete galvanized layer, and there must be no unplated black spots and bubbles, and small rough surfaces and local zinc tumors are allowed.
Beside the scaffolding steel pipe, we also can do customized steel tube for clients.