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How to control the welding of spiral welded pipe?

12-17-2021 11:04 AM CET | Industry, Real Estate & Construction

Press release from: Nansteel Manufacturing Co.,Ltd

/ PR Agency: Nansteel Manufacturing Co.,Ltd

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

Pipe molding can only follow two specific techniques that result in either seamless and welded pipe. Crude raw material such as ore or metal cast into ingots is the first step. The last step of the fabrication process is to shape the pipes by extending the seamless tube.

Learn more about seamless and welded pipe,please visit:
https://www.nan-steel.com/news/seamless-and-welded-pipe.html

Generally, Controlling the shape of the weld is by adjusting welding current, arc voltage, welding speed, welding wire extension, welding wire Angle and welding head offset.

1, the welding current on weld penetration and bead height is very significant. The larger the current, the greater the penetration, the weld height is greater.

2, the arc voltage and wire elongation has a greater impact on the weld width. The greater the Arc voltage, the larger the wire elongation.

3, the welding speed, the smaller the bead width, penetration depth is smaller.

4, the wire angle has great influence on the weld shape. Welding wire is in the direction of deviation from the vertical, weld penetration increased width decreases; if the wire deflection departure from the welding direction, the weld penetration depth decreases and the width increases.

5, the welding head offset is welded to the pipe center point of the horizontal radial distance, the shape of the weld is also great. This is the spiral submerged arc welded pipe -specific issues. Spiral pipe in the spiral tube for welding under a state of movement, there is a circumferential steel rotating movement, which will cause the flow of molten iron bath, the impact of weld. Select the appropriate offset to help weld with satisfactory appearance and shape, if the offset is greater and the bead height is smaller , as well as side to side mobility trends within the weld and weld middle sag larger trend.

Xueshi Rd, Yuelu Technology Industrial Park, Changsha,China

Nansteel Manufacturing Co.,Ltd, today an ISO - 9001:2008, certified Company. are a prominent Manufacturer, Stockist and Exporter of carbon steel pipe, stainless steel pipe, structural section, fittings and OCTG in various materials including Stainless Steel, Carbon Steel, Alloy Steel. in standard size and as per our customers’ requirements and drawings. Products from Nansteel are used widely in Nuclear Power Plants, Thermal Power Stations, Atomic Power Plants, Oil & Gas, Petrochemical, Fertilizers, and Chemicals & Pharmaceuticals.Together with the know-how which technical power and the many years and spontaneity service, we supply the product of good quality with economies of scale to the customer. Moreover, it had become the company compared is equipping the best role of competitive power improvement with the customer. We grew as the novelty one enterprise grows the partner relationship which goes out it pursues to be strong, continuity. Nansteel is a growth-oriented company, providing exceptional quality and service with competitive pricing on all of our products. We take pride in our employees, products and service, all of which have contributed to years of growth. This philosophy has earned us a solid reputation for excellence within our industry.

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