Large-diameter straight seam submerged arc welded steel pipe

Large caliber straight seam rolled pipe products are widely used in petroleum, chemical, natural growth gas transportation, pile driving, urban water supply, heating, gas supply and other engineering projects.

Commodity name： Large-diameter straight seam submerged arc welded steel pipe

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Product Details

The main issue in producing large-diameter straight seam rolled pipes is welding. As long as they can pass the non-destructive testing, the delivery requirements are relatively broad compared to other products. The main detection method for large-diameter straight seam rolled pipes is ultrasonic flaw detector, and the longitudinal welds on the same section of the rolled pipe should not exceed two. When the welding seam of the rolled pipe is welded, it is advisable to perform bottom sealing welding inside the pipe when the nominal diameter is greater than the inner production level. During the process of pipe rolling, it is necessary to prevent damage to the surface of the board.

There are two weld seams in large-diameter straight seam rolled pipes, mainly due to issues with raw materials and equipment processing. The steel mills that require the width of the large-diameter straight seam rolled pipe requested by the customer generally do not produce it, so the manufacturer needs to weld the two plates, resulting in this type of weld seam. The main issue in producing large-diameter straight seam rolled pipes is welding. For customized tapered steel pipe rolled pipes, as long as they can pass the non-destructive testing, they can meet the delivery requirements compared to other products
Relatively broad.

Large caliber straight seam rolled pipe products are widely used in petroleum, chemical, natural growth gas transportation, pile driving, urban water supply, heating, gas supply and other engineering projects.

Large caliber straight seam rolled pipe is a type of welded pipe product with a relatively simple and flexible manufacturing process among large-diameter welded pipes. If the length requested by the customer is quite special, it is necessary to connect two or more steel pipes, so the production process of this large-diameter straight seam rolled pipe is relatively flexible, convenient and applicable. The disadvantage is that it cannot be produced on a mechanized assembly line. The level of automation and mechanization is not high, requiring a large amount of manual processing. The main issue in producing large-diameter straight seam rolled pipes is the flange joint. As long as it can pass the non-destructive testing, the delivery requirements are relatively broad compared to other products.