Knowledge

27Sep, 2024

What is the role of slag removal?
Slag removal refers to the process of clearing excess welding slag and flux from the inside of the pipe after internal welding. The method used is to lift the spiral pipe with an o
27Sep, 2024

What is the role of initial inspection of pipe cutting
Spiral submerged arc welded pipes have relatively large diameters and wall thicknesses, and most of them are currently cut by plasma cutting. In order to ensure the perpendicularit
27Sep, 2024

What parameters need to be adjusted for internal and external welding
(1) Welding current (2) Welding voltage (3) Welding speed
26Sep, 2024

What is the function of external welding?
External welding refers to the welding process that takes place on the outer surface of the steel pipe, located at a distance of one and a half pitches or two and a half pitches fr
26Sep, 2024

What is the function of internal welding?
Internal welding refers to the welding process that takes place inside the steel pipe, where the welding arm is inserted into the pipe at a distance behind the engagement point of
26Sep, 2024

What is the forming angle?
The forming angle refers to the acute angle formed by the intersection of the horizontal projection of the steel pipe centerline and the steel strip centerline, commonly denoted as
26Sep, 2024

What is the function of forming?
Under the action of the former, the steel strip with the required width, thickness, and material is rolled into steel pipes of the desired specifications according to the set formi
26Sep, 2024

What is the function of the delivery mechanism?
The steel strip passes through the middle of the lower and upper rolls of the delivery mechanism. The pressing cylinder acts on both ends of the upper roll, and under the force of
25Sep, 2024

What is the function of trimming?
The steel strip is continuously trimmed by a disc shear to achieve a uniform width. The steel strip used for spiral welded pipes is typically round-edged material, which has a rela
25Sep, 2024

What is the function of shearing and butt welding?
In the production process of spiral welded pipes, to ensure continuous production on the production line, it is necessary to weld two rolls of steel strip together to form a contin
25Sep, 2024

What is the function of leveling?
The leveling process utilizes alternately staggered and overlapping straightening rollers to apply repeated elastic-plastic deformation to the steel strip passing through them. Und
25Sep, 2024

What is the function of loading and uncoiling?
The function of loading and uncoiling is to enable the steel strip to rotate smoothly under the action of the uncoiler, and to feed the steel strip steadily into the next process.

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