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ODF straight seam submerged arc welded pipe is a type of straight seam submerged arc welded pipe. When using submerged arc welding technology, there is usually one weld seam, and when the diameter is greater than 914.4, the standard allows for two straight welds. Its specification range is between 325mm and 1420mm.
keyword ODF straight seam submerged arc welded pipe Category Other Related products Get a quoteIntroduction to ODF straight seam submerged arc welded pipe
Basic information
ODF straight seam submerged arc welded pipe is a type of straight seam submerged arc welded pipe. When using submerged arc welding technology, there is usually one weld seam, and when the diameter is greater than 914.4, the standard allows for two straight welds. Its specification range is between 325mm and 1420mm.
Technical principles and characteristics
Technical principles
The principle of straight seam submerged arc welding is to melt the workpiece with an arc, and then fill the welding joint with molten metal. During the welding process, the welding wire is continuously fed into the weld seam, while introducing welding and shielding gas to fill the weld seam and maintain a high-quality flux layer around the weld seam.
characteristic
High efficiency, high quality, and high stability: This welding technology can achieve efficient steel pipe production, ensure the quality of welds, and make steel pipes have good dimensions and external dimensions.
Fast welding speed: able to meet the needs of large-scale production.
High weld quality: Good welding strength and sealing, able to meet the requirements of high pressure and high temperature conditions, reduce welding deformation, improve welding reliability, and effectively extend the service life of steel pipes.
Production and Cost
Production process
The production process of straight seam submerged arc welded pipes is relatively flexible and can produce any specification and wall thickness within the production range, but the production efficiency is lower compared to high-frequency straight seam welded steel pipes and spiral welded steel pipes.
production costs
The production cost is higher than that of high-frequency steel pipes and spiral steel pipes, but there is a lot of room for price discounts compared to seamless steel pipes.
Materials and Standards
material
Straight seam submerged arc welded pipes can produce high-frequency steel pipes and materials that spiral steel pipes cannot produce. High frequency steel pipes are usually produced in commonly used specifications in China, with bulk production inventory. The materials are mostly Q235B, Q345B, etc. Other harder steel plate materials cannot be produced domestically for high-frequency equipment and spiral equipment, while straight seam submerged arc welded pipes can be produced.
Execution standards
The product complies with the low-pressure fluid steel pipe standard GB/T3091-2008, the petroleum and natural gas pipeline execution standard GB/T9711.1 (2) -1997, and the American execution standard ASTMA252 for welded structural steel pipes.
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