Straight wrinkle steel pipe welding process

What is the surrounding method of straight wrinkle welded steel pipe? Straight wrinkle welded steel pipe is a steel pipe made by hot-rolled or cold-moved steel plate or steel strip. The pipe gotten by straight wrinkle welding on the welding rigging is called straight wrinkle welded pipe. Straight wrinkle welded steel pipe (YB242-63) is welded with steel production line. Steel pipes with longitudinally parallel steel channels. Galvanized Pipe Factory Commonly isolated into metric electric welded steel pipe, winding welded steel pipe,welded slight walled pipe, transformer cooling oil pipe, and so on. In the going with article, I will rapidly familiarize you with the welding steel pipe forming system.

Straight wrinkle steel pipe welding process

Straight wrinkle steel pipe welding strategy can be divided into electric restriction welded straight wrinkle steel pipe and submerged twist welded straight wrinkle steel pipe, wherein electric check welded straight wrinkle steel pipe is also confined into high repeat welded straight wrinkle steel pipe, medium repeat welded straight wrinkle steel pipe, low repeat welded straight wrinkle steel pipe, The submerged round fragment welded straight wrinkle steel pipe is in like manner called twofold sided submerged bend welded straight wrinkle steel pipe or LSAW straight wrinkle steel pipe, and the LSAW is (truncated as LSAW for Longitudinally Submerged Arc Welding). Restriction welding straight wrinkle steel pipe is also called ERW straight wrinkle steel pipe.

The surrounding system of straight wrinkle welded steel pipe

The ERW (Electric Resistance Weldin) is abbreviated as ERW. High-repeat welded straight wrinkle steel pipe is moreover called ERW straight wrinkle steel pipe. ERW is a general term for electric resistance welded steel channels. The electric impediment welding (ERW) ERW is the primary letter identifying with English words. Deterrent welded steel channels are isolated into two sorts: AC welded steel pipe and DC welded steel pipe. Cooling welding is isolated into low repeat welding, medium repeat welding, too most of the way repeat welding and high repeat welding according to the repeat. High-repeat welding is essentially used for the formation of slight walled steel pipes or standard divider thickness steel channels. High-repeat welding is secluded into contact welding and acknowledgment welding. DC welding is usually used for little separation crosswise over steel channels.

Nevertheless, paying little respect to which kind of straight wrinkle steel pipe welding process, the essential advances are practically identical, as showed as pursues:

Board assessment: After the steel plate used to manufacture the colossal separation crosswise over submerged twist welded straight wrinkle steel pipe enters the creation line, the whole board ultrasonic audit is first done;

Handling edge: twofold sided preparing the two edges of the steel plate by the edge handling machine to achieve the required plate width, parallelism of the edge and the condition of the score;

Pre-curve: use the pre-bowing machine to pre-wind the edge of the board with the objective that the edge of the board has the required twist;

Trim: First, half of the pre-bent steel plate is wandered and ventured on the JCO adornment machine, crushed into a “J” shape, and a while later the other bit of the steel plate is similarly bowed, pressed into a “C” shape, finally an opening is encircled. “O” shape

Pre-welding: joints of straight wrinkle welded steel channels ensuing to forming and predictable welding by gas secured welding (MAG);

Internal welding: welding by longitudinal multi-wire submerged curve welding (up to four wires) inside a straight wrinkle steel pipe, square bar steel;

External welding: welding by longitudinal multi-wire submerged round portion welding apparently of straight wrinkle submerged bend welded steel pipe;

Ultrasonic evaluation I: 100% examination of the inside and outer welds of straight wrinkle welded steel channels and the base metal on the different sides of the weld;hot dip galvanized steel coil

X-pillar examination I: 100% X-shaft mechanical TV assessment of internal and external welds, using picture dealing with system to ensure the affectability of flaw disclosure; 10. Developing broadness: Expanding the full length of the submerged round fragment welded straight wrinkle steel pipe to improve the dimensional exactness of the steel pipe and improve the dissemination of stress in the steel pipe; 11. Water driven test: On the water driven testing machine, the steel pipe after the separation crosswise over improvement is attempted separately to ensure that the steel pipe meets the test weight required by the standard. The machine has customized recording and limit functions;

Chamfering: The steel pipe in the wake of passing the appraisal will be taken care of at the pipe end to achieve the required pipe end wrinkle size;

Ultrasonic assessment II: Ultrasonic evaluation is done again and again to check for flaws that may happen consequent to fixing and water weight of straight wrinkle welded steel pipes;

X-shaft survey II: X-bar present day TV examination and chamber end weld taping of the steel pipe after the expansion and hydrostatic test;

Chamber end appealing particle audit: Perform this appraisal to find the chamber end disfigurement; 16. Antagonistic to disintegration and covering: The guaranteed steel pipe is ensured and secured by customer necessities.

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