Manufacturing process of LSAW steel pipe

1.     The raw materials of LSAW steel pipe are strip coil, welding wire and flux.


2.     The technology used in the production of LSAW steel pipe is divided into single wire or double wire submerged arc welding.


3.     Before the LSAW steel pipe is formed, the strip needs to be straightened, trimmed, planed, surface cleaned, conveyed and pre-bent.


4.     When using the weld gap control device, it must be ensured that the weld gap meets the welding requirements, and the pipe diameter, misalignment and weld gap must be handled in strict accordance with the regulations.


5.     All welds are inspected by online continuous ultrasonic automatic flaw detector to ensure 100% non-destructive testing of spiral welds and prevent defective products.


6.     After the LSAW steel pipe is completed, it is necessary to use an air plasma cutting machine to cut the steel pipe into individual pipes. After cutting into single steel pipes, each batch of steel pipes must be strictly inspected, and the inspection standards must strictly conform to the established standards. At the same time, each steel pipe needs to pass the hydrostatic pressure test, and the pressure is radially sealed. The test pressure and time are strictly controlled by the steel pipe hydraulic microcomputer detection device, and the test parameters are automatically printed and recorded.



Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.