Spiral Steel Pipe Manufacturer: What are the characteristics of straight-seam steel pipes?

　　 Spiral steel pipe The manufacturer states that straight-seam steel pipes are primarily used in municipal water supply projects, the petrochemical and chemical industries, the power industry, agricultural irrigation, and urban construction. They are employed for liquid transport—both water supply and drainage—and for gas transportation, including coal gas, steam, and liquefied petroleum gas. In structural applications, they serve as pile‑driving pipes and bridge components, as well as piping for docks, roads, and various building structures.

　　The installation and use of straight-seam steel pipes must be carried out in accordance with the actual conditions and operating procedures to ensure safety and quality, as they are subject to stringent technical requirements. When using standard straight-seam steel pipes, the following points should be observed:

　　1. Pre-construction preparations for straight-seam steel pipes. According to spiral steel pipe manufacturers, it is necessary to excavate pipelines and trenches, construct manholes, and install various straight-seam steel pipes. All required tools—such as electric hammers, electric welders, cutting machines, and polishing machines—must be fully prepared. Prior to installation, a series of preparatory measures must be completed.

　　2. Installation of straight-seam steel pipes. Based on site conditions, prefabricate pipe supports, position the pipelines according to the design drawings, then drill and mark the installation locations as specified in the design. Next, use a grinding machine to bevel the pipe ends, followed by welding.

　　3. Quality requirements for use: Spiral steel pipe manufacturers stipulate that branch pipes must not be welded at the weld seams. Welding should be avoided during bending. For vertical pipe installation, the deviation per meter shall be less than 3 mm; for horizontal pipe installation, the deviation shall be less than 1 mm. This necessitates straight, full‑penetration welds with no burn‑through or cracks on the weld surface.

　　Spiral steel pipe manufacturers state that straight-seam steel pipes are primarily used for conveying ordinary low-pressure fluids, such as water, gas, air, oil, and heated steam. Pipe ends may be either plain or threaded. The nominal diameter of steel pipes is typically specified in inches; this nominal diameter is an approximate value of the internal diameter. In addition to direct fluid conveyance, straight-seam steel pipes can also serve as base tubes for galvanized welded steel pipes used in low-pressure fluid transport.

　　Plain carbon steel conduit is a type of straight-seam steel pipe used in industrial and civil construction, mechanical equipment installation, and other electrical installation projects to protect electrical wires. Straight-seam welded steel pipes are generally classified into metric straight-seam welded steel pipes, thin-walled straight-seam welded steel pipes, and straight-seam welded steel pipes for transformer cooling oil.

　　Submerged Arc Welded (SSAW) straight‑seam welded steel pipes for pressurized fluid transport are manufactured from hot‑rolled strip steel using a spiral welding process. They typically undergo helical forming at elevated temperatures and are welded on both sides using submerged arc welding, making them suitable for conveying pressurized fluids. These pipes exhibit strong pressure resistance and excellent weldability. Rigorous scientific inspections and tests ensure their safety and reliability in service. With large diameters and high transport efficiency, they help reduce investment costs associated with pipeline installation. They are primarily used for the transportation of oil and natural gas.

　　Spiral steel pipe manufacturers state that spiral‑seam high‑frequency welded steel pipes for pressurized fluid conveyance are helical welded pipes produced by high‑frequency lap welding, typically fabricated from hot‑rolled steel coils. They are designed for transporting pressurized fluids. These pipes offer strong load-bearing capacity, excellent ductility, and convenient weldability. Rigorous scientific inspections and tests ensure their safety and reliability in service. With large diameters, they deliver high transport efficiency, helping to reduce pipeline installation costs. They are primarily used for oil and gas transportation.