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Spiral submerged arc welded steel pipes for pressure applications according to ISO 2604-6 standard
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Spiral submerged arc welded steel pipes for pressure applications according to ISO 2604-6 standard
Spiral submerged arc welded steel pipe is an important pipeline material widely used in industries such as petroleum, natural gas, and chemical. ISO 2604-6 is an international standard that specifies the quality requirements for steel used in pressure applications, particularly for straight seam or spiral submerged arc welded steel pipes. Here are some detailed information about the ISO 2604-6 standard for spiral submerged arc welded steel pipes:
Standard Overview:
ISO 2604-6: 1978 is an international standard specifically designed for the quality requirements of steel products for pressure applications, particularly straight seam or spiral submerged arc welded steel pipes.
This standard covers quality requirements for steel pipes in terms of material, production process, dimensional accuracy, appearance, and surface treatment.
Quality requirements:
Material: The quality requirements for steel materials include chemical composition, mechanical properties, and dimensional accuracy, all of which must comply with the provisions of ISO2604-6 standard.
Production process: The manufacturing process of steel pipes includes immersion arc welding, which is a continuous process in which current is passed through an arc to melt the steel material and weld it together. The quality control of this process includes welding quality, weld shape and position, etc.
Dimensional accuracy: The dimensional accuracy of steel pipes includes length, diameter, wall thickness, etc., all of which need to comply with the provisions of ISO2604-6 standard. The dimensional accuracy directly affects the strength, service life, and safety of steel pipes.
Appearance and surface treatment: The appearance and surface treatment of steel pipes are also part of the quality requirements, including surface cleanliness, color, gloss, etc. These factors will affect the appearance and performance of steel pipes.
Certification and testing:
In order to ensure the quality of steel products meets the ISO2604-6 standard, manufacturers usually need to certify and test them. This usually includes inspection of raw materials, control of production processes, measurement of product dimensions, inspection of welding quality, testing of chemical and mechanical properties, etc. Testing agencies are usually accredited by ISO or related organizations.
Safety and usage:
In addition to the above quality requirements, steel pipes must also comply with safety and usage regulations. For example, for high-pressure steel pipes, additional safety measures such as pressure testing and regular inspections may be required.
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