Marking of pipeline in Haihao Group
Pipe spools consist of pipes,pipe fittings,flange,valves etc.Marking is to show the information of these materials.
The regular information includes brand,size,thickness/pressure,material,heat number etc.
There are many methods to mark on pipeline,the regular methods are stenciled marks,carve marks and dot matrix marks.
Stenciled marks are mainly used for pipes and large fittings.The pipe and large fittings are very big,the marking information should be also big enough to be seen clear.Stenciled marks have this feature.In addition,stenciled marks are not permanent;information could be removed by grinding.For pipe and big fittings,there is less grind among each other.
Carve marks are mainly used for small fittings and flanges.
The equipments of carve marks are fixed;workers must control fittings by hand to process the marking.If the goods are too big,workers couldn’t control them.In addition,this marking looks beautiful,the speed is fast and cost is lower than others.
Dot matrix marks are mainly used for large fittings and flange.Workers only need control the handle of equipment to mark on goods.This marking need flat face to mark.The size is bigger,the marking is better.Compared with carve marks,dot matrix marks are slower,cost is higher.Compared with stenciled marks,dot matrix marks is permanent,but letter is smaller.