Construction, machinery manufacturing, steel construction projects, shipbuilding, solar power support, steel structure engineering, electric power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, etc.
The classification of rectangular tubes: seamless steel tubes and welded (welded) seamless steel tubes hot-rolled, cold-drawn seamless steel tubes, extruded seamless steel tubes, welded steel tubes.
The welded square pipe can be divided into
a. By technology: arc welding square pipe, resistance welding square pipe (high frequency, low frequency), gas welding square pipe, furnace welding square pipe.
b. according to the welding line - straight seam welded square pipe, spiral welded square pipe.
|Material||Q195 similar to a283 GR.B, 040a10, ss330
Q235 similar to a283 GR.D, 080a15,CS type B
Q345 similar to a737 GR.B, SS400, S235JR
|Material Chemical Composition||C||Mn||Si||S||P|
|Tensile strength: 315-430(Mpa) Yield steength:195(Mpa) Elongation:33|
|Shape||Square / Rectangular|
|Outer Dia(mm)||15*15mm-500*500mm / 10*20mm-400*60000mm|
|Surface Treatment||1)Black, Pre-galvanized
2)oiled, powder coating
3)Galvanized as your requirement
PS:Pre galvanized steel pipe: 60-150g/m2;Hot dipped galvanized steel pipe: 40-600g/m2
|Inspection||With Chemical Composition and Mechanical Properties Testing; Hydrostatic Test, Dimensional and Visual Inspection, With Nondestructive Inspection|
|Application||Construction pipe, machine structure pipe, agriculture equipment pipe, water and gas pipe, Greenhouse pipe, Building material, Furniture tube, Low pressure fluid tube, etc|
|Others||1:Special design available according to requirement.
2:Pipe can be necked dowm, punching hole on pipe wall.
3:Pipe fittings, elbows are available.
4: All production process are under the ISO9001:2000 strictly.