What is the framing procedure of straight crease welded steel pipe? Straight crease welded steel pipe is a steel pipe made by hot-rolled or cold-moved steel plate or steel strip. The pipe acquired by straight crease welding on the welding hardware is called straight crease welded pipe. Straight crease welded steel pipe (YB242-63) is welded with. Steel channels with longitudinally parallel steel funnels SGH340/440 Cold Rolled Steel Strip Manufacturers in china. Typically partitioned into metric electric welded steel pipe, winding welded steel pipe,welded flimsy walled pipe, transformer cooling oil pipe, etc. In the accompanying article, I will quickly acquaint you with the welding steel pipe shaping procedure.
Straight crease steel pipe welding process:
Straight crease steel pipe welding procedure can be separated into electric obstruction welded straight crease steel pipe and submerged circular segment welded straight crease steel pipe, wherein electric opposition welded straight crease steel pipe is additionally isolated into high recurrence welded straight crease steel pipe, medium recurrence welded straight crease steel pipe, low recurrence welded straight crease steel pipe, The submerged curve welded straight crease steel pipe is likewise called twofold sided submerged bend welded straight crease steel pipe or LSAW straight crease steel pipe, and the LSAW is (curtailed as LSAW for Longitudinally Submerged Arc Welding). Opposition welding straight crease steel pipe is likewise called ERW straight crease steel pipe.
The ERW (Electric Resistance Weldin) is truncated as ERW. High-recurrence welded straight crease steel pipe is likewise called ERW straight crease steel pipe. ERW is a general term for electric opposition welded steel funnels. The electric obstruction welding (ERW) ERW is the principal letter comparing to English words. Obstruction welded steel channels are isolated into two kinds: AC welded steel pipe and DC welded steel pipe. Air conditioning welding is isolated into low recurrence welding, medium recurrence welding, too transitional recurrence welding and high recurrence welding as indicated by the recurrence. High-recurrence welding is for the most part utilized for the generation of meager walled steel channels or normal divider thickness steel funnels. High-recurrence welding is partitioned into contact welding and acceptance welding. DC welding is commonly utilized for little width steel channels.
Be that as it may, regardless of which kind of straight crease steel pipe welding process, the principle steps are comparable, as demonstrated as follows:
Board assessment: After the steel plate used to fabricate the huge width submerged circular segment welded straight crease steel pipe enters the generation line, the entire board ultrasonic investigation is first done;
Processing edge: twofold sided processing the two edges of the steel plate by the edge processing machine to accomplish the required plate width, parallelism of the edge and the state of the depression;
Pre-twist: utilize the pre-bowing machine to pre-twist the edge of the board so the edge of the board has the required ebb and flow;
Trim: First, half of the pre-twisted steel plate is ventured and stepped on the JCO embellishment machine, squeezed into a “J” shape, and after that the other portion of the steel plate is additionally bowed, squeezed into a “C” shape, lastly an opening is framed. “O” shape
Pre-welding: joints of straight crease welded steel pipes in the wake of shaping and ceaseless welding by gas protected welding (MAG);
Interior welding: welding by longitudinal multi-wire submerged circular segment welding (up to four wires) within a straight crease steel pipe;
Outer welding: welding by longitudinal multi-wire submerged circular segment welding outwardly of straight crease submerged curve welded steel pipe;
Ultrasonic review I: 100% examination of the internal and external welds of straight crease welded steel channels and the base metal on the two sides of the weld;
X-beam review I: 100% X-beam modern TV assessment of inward and outside welds, utilizing picture handling framework to guarantee the affectability of defect recognition; 10. Growing measurement: Expanding the full length of the submerged circular segment welded straight crease steel pipe to improve the dimensional precision of the steel pipe and improve the appropriation of worry in the steel pipe; 11. Water driven test: On the water driven testing machine, the steel pipe after the measurement extension is tried individually to guarantee that the steel pipe meets the test weight required by the standard. The machine has programmed recording and capacity functions;steel square bar producers
Chamfering: The steel pipe in the wake of passing the investigation will be prepared at the pipe end to accomplish the required pipe end score size;
Ultrasonic assessment II: Ultrasonic examination is done over and over to check for deformities that may happen in the wake of rectifying and water weight of straight crease welded steel funnels;
X-beam review II: X-beam mechanical TV assessment and cylinder end weld shooting of the steel pipe after the extension and hydrostatic test;
Cylinder end attractive molecule assessment: Perform this examination to discover the cylinder end deformity; 16. Against consumption and covering: The certified steel pipe is saved and covered by client necessities.