Steel pipes might be classified to welded steel pipe, galvanized welded steel pipe, spriral submerged arc welded pipe and so on.
Classify by Software – steel pipes for pipelines, steel pipes for thermal tools, steel pipes for industrial machinery , petroleum , geological drilling steel , container steel , chemical industry with steel pipes, steel pipes for special functions , others. 1. for low pressure liquid supply (GB / T3092-1993) ,it’s also called common welded pipe, generally known as the black steel pipe. Welded steel pipe is used for conveying water, gasoline , air, oil and heating steam and different general low strain fluid and for some other purposes as nicely. Then divided into abnormal wall thickness steel pipe and thicker steel by wall thickness ; take pipe end into consideration, welded steel pipe can be divided into bare steel tube (naked tubes ) and threaded steel pipe . Pipe specifications might specific with nominal diameter (mm), nominal diameter is the approximation of the diameter. Historically, expressed in inches generally , akin to eleven/2 and so on. Except for delivering low stress liquid instantly, welded steel pipes are additionally widely used as raw pipe for low strain liquid delivery galvanized welded steel pipe .
The low pressure fluid galvanized welded steel pipe (GB / T3091-1993) , often known as galvanized welded steel pipe, generally known as white tube . It ishot-dip galvanized welded (furnace brazed or welded )pipe used for conveying water , gas, air, oil and steam heating , warm water and other general low stress fluid or some other functions. Then divided into unusual wall thickness steel pipe and thicker steel by wall thickness ; take pipe finish into consideration, galvanized welded steel pipe might be divided into bare steel tube (naked tubes ) and threaded steel pipe . Pipe specs may specific with nominal diameter (mm), nominal diameter is the approximation of the diameter. Traditionally, expressed in inches commonly , reminiscent of 11/2 and so forth.
Extraordinary carbon steel wire casingtube(GB3640-88) work for the safety of steel wires in industrial and civil building, installation of gear and other electrical set up.
traight seam welded steel pipe (YB242-63) is parallel to the longitudinal welds and steel pipe . Normally divided into metric welded steel pipe , welded thin-walled tube , transformer cooling tubing and the like.
Spiral submerged arc welded pipe(SY5036-83)for transport pressure bearing fluid is formed by room temperature spiral with hot-rolled steel strip coils as pipe clean. It is spiral seam steel pipe made by double-sided submerged arc welding method for delivery of pressurized fluid spiral pipe joints. It has sturdy stress bearing capacity, good welding performance , and via a wide range of rigorous scientific examination and testing , it has been proved using safe and dependable. With big pipe diameter , high transmission efficiency, it could save the laying of pipeline investments. Mainly used for pipelines for transporting oil and fuel.
