Cangzhou Avant International Trade Co., Ltd. is one of the leading manufacturers and suppliers of large diameter ssaw steel pipe in China. We are committed to providing high quality customized products with competitive price. Welcome to wholesale cheap large diameter ssaw steel pipe in stock here from our factory. Also, free sample is available.
Large-diameter spiral welded steel pipes use high-quality hot-rolled steel strips as raw materials, and are manufactured through continuous rolling and double-sided submerged arc welding. Its biggest feature is that the weld seam is evenly distributed in a spiral shape. Compared with ordinary straight seam welded pipes, the overall stress is more balanced, less prone to stress concentration and local cracking, and has better overall structural stability. Because of its flexible forming process, this pipe can easily achieve customized production of ultra-large diameters, large wall thicknesses, and arbitrary lengths, which is difficult to achieve with ordinary welded pipes and seamless pipes.
Many overseas buyers struggle with the decision of when to choose spiral welded pipes. Simply put, if your project involves large-diameter buried pipelines, long-distance transportation, and large-scale installations, spiral welded pipes are generally the optimal solution. They don't require high mold-making costs, have fast mass production speeds, and offer a wide range of specifications, with standard outer diameters ranging from 219mm to 3220mm and wall thicknesses from 5mm to 25.4mm. They are perfectly suited for both conventional municipal engineering projects and large-scale oil and gas and water conservancy projects.
Our large-diameter spiral welded pipes for export are all manufactured according to internationally recognized engineering standards, ensuring excellent compatibility. The products strictly adhere to standards such as API 5L, GB/T 9711, EN 10217, and EN 10219. Commonly used steel grades include Gr.B, X42, X52, X60, and X70, suitable for various projects including oil and gas transportation, municipal water supply, sewage treatment, and structural foundations. For complex overseas working conditions such as high salt spray along the coast, high temperature deserts, and low temperature extremes, we can also provide customized versions that are resistant to low temperatures, sulfur, and corrosion, adapting to the extreme construction environments of different regions.
The production process of spiral welded steel pipes is extremely rigorous, mainly including uncoiling, leveling, edge milling, spiral forming, internal and external submerged arc welding, cutting, non-destructive testing, hydrostatic testing, anti-corrosion treatment, and finished product warehousing.
During the forming process, the strip steel undergoes strict cleaning and pre-bending treatment, and is continuously formed using a roller forming machine. Both internal and external welds are produced using an automatic double-wire double-sided submerged arc welding process. After welding, 100% online continuous ultrasonic automatic flaw detector inspection is performed to ensure non-destructive testing coverage of the welds, thereby achieving stable welding quality.
As a source factory with long-term experience in foreign trade exports, we understand the stringent requirements of overseas customers regarding delivery time, quality, and packaging. We maintain ample inventory of standard specifications to support rapid delivery; non-standard diameters, special wall thicknesses, special anti-corrosion treatments, and extra-long lengths can all be customized. We offer a one-stop service including pipe end beveling, flattening, rust removal, painting, and dedicated packaging for ocean shipping, catering to the specific needs of overseas construction sites.
With stable product quality and standardized export services, our spiral welded steel pipes are sold to numerous countries and regions in Southeast Asia, the Middle East, Africa, and South America. Whether it's a small sample order or a large-scale, long-term supply for infrastructure projects, we can provide a stable and reliable delivery solution, making procurement easier for overseas customers and project implementation smoother.
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