A179C A192 St35.8 Din17175 Erw Sch40 Spiral Welded Steel Pipe
Spiral welded pipe Compared with the straight seam welded pipe, the spiral welded pipe has higher strength and larger diameter. The production standard of the spiral welded pipe is more than that of the straight seam welded pipe. Mainly used in steel structure engineering,machinery manufacturing, construction water, oil pipelines and other low-pressure fluid pipelines, and can also be used in piling,structure and other construction fields.
Shandong HengdingSheng Steel Co., Ltd. is a professional carbon steel pipe manufacturer with ISO CE certificate and a large factory with a productivity of 500,000 tons per month. We supply from wall thickness 0.5-300mm, including seamless carbon steel pipe and welded carbon steel pipe. Custom sizes available. We have large stocks for fast delivery, and provide free samples and customized services. The main markets are distributed in Europe, North America, South America, Africa, Southeast Asia and Oceania. The company has established stable cooperative relations with customers in more than 100 countries and regions.
Our spiral welded pipes are manufactured using high-frequency welding technology, delivering exceptional structural strength and pressure resistance for large-diameter applications. The continuous spiral seam design ensures uniform stress distribution, making these pipes ideal for long-distance fluid transmission and structural piling. Available in various grades including Q235, Q345, and X42-X70, etc. with anti-corrosion coatings (FBE, 3PE) optional. Widely used in water transmission, oil and gas pipelines, and construction foundation projects.
We operate multiple advanced production lines equipped with precision uncoiling systems, edge milling machines, and CNC forming units. High-frequency welding technology combined with real-time seam tracking ensures consistent weld quality, supported by comprehensive online inspection including ultrasonic testing and X-ray examination. Hydraulic expansion is applied to improve roundness and straightness, while automated cutting and beveling operations guarantee dimensional accuracy. The entire manufacturing process complies with international standards such as API 5L, EN 10219, and GB/T 9711.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.