Spiral steel pipe

The production process for spiral welded steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) is as follows: 1. Inspect raw materials: steel strip coils, welding wire, and welding equipment. 2. After straightening, shearing, planing, and rolling, the steel strip undergoes preliminary forming. 3. At Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.), the spiral welded pipe’s weld gap is precisely controlled, and the diameter of the bare pipe during forming is adjusted. 4. An automatic double-sided submerged-arc welding machine is used to weld the formed pipe. 5. The pipe diameter is measured, and the weld seams are manually inspected.

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Spiral steel pipe

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Product Description

　　The production process for spiral welded steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) is as follows:
　　1. Inspect raw materials: steel coils, welding wire, and welding machines.
　　2. The steel strip is pre-formed after straightening, shearing, planing, and rolling.
　　3. The spiral steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) feature controlled welding gaps and an adjusted diameter for seamless pipe forming.
　　4. Automatic double-sided submerged-arc welding machine for forming welded steel pipes
　　5. Measure the diameter of the steel pipe and manually inspect the weld seams.
　　6. Air plasma cutting of spiral steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) has been completed.
　　7. The ends of the spiral steel pipe are flat and beveled.
　　8. Inspect the spiral steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) in accordance with the applicable standards.
　　9. The spiral steel pipes manufactured by Hebei Spiral Steel Pipe Factory (Zhongyuan Pipeline Manufacturing Co., Ltd.) are delivered to the warehouse after passing inspection.

Our Advantages

Smart Manufacturing Capacity Advantage

13 automated pipe‑making lines and 4 anti‑corrosion production lines, with an annual output of one million tons of steel pipes; all large‑diameter sizes are produced in‑house, ensuring stable lead times for bulk deliveries.

Quality and Qualification Advantages

Comprehensive nondestructive testing conducted by an independent laboratory, with dual certification under API and national standards; a long-term approved supplier for central state-owned enterprises, and fully qualified to bid on engineering projects.

Comprehensive Service Advantages

Customized solutions covering the entire oil & gas, municipal, and water‑conservation sectors, offering end‑to‑end support from conceptual design through logistics and after‑sales service, with capabilities for both domestic and international trade exports.