Spiral welded pipe refers to steel pipes made by continuously roll-forming steel strips or plates and then welding them in a spiral pattern, with weld seams distributed in a spiral shape. Its key characteristics include high production flexibility—enabling the manufacturing of pipes with different diameters (especially large ones) by adjusting the forming angle—and more uniform stress distribution of spiral welds, which can effectively disperse internal pipe pressure and external loads, combining high structural strength and pressure resistance. Additionally, it features high production efficiency, relatively low cost per unit length, and suitability for mass production of long-distance transmission pipelines. These properties make spiral welded pipes widely used in fields such as long-distance oil and gas transmission pipelines, municipal water supply and drainage projects, sewage treatment systems, thermal energy transmission pipelines, and large-scale steel structure supports (e.g., bridge piers, factory building columns), particularly excelling in scenarios requiring large-diameter and high-pressure-resistant pipes.

Outer Diameter：8"-36" (Φ219.1-914.4mm,Length:5.8-12m)

Standards:  ASTM A53，API 5L, ASTM A252,GBIT9711,GBIT3091，SY/T5037、YIT5040，T/CAMT20

Straight Seam Welded Steel Pipe is a type of steel pipe manufactured by welding steel plates or strips along a straight seam. It boasts high production efficiency and lower costs due to its highly automated manufacturing process, which enables fast production speeds. This pipe can be produced in various diameters and wall thicknesses to meet diverse requirements. Advanced welding techniques ensure high-quality weld seams. Straight Seam Welded Steel Pipes are widely used in the oil and gas industry for fluid transportation, in construction and structural engineering for buildings, bridges, and pipelines, in the chemical industry for conveying chemicals and corrosive media, and in the power industry for power transmission and generation equipment. They are the preferred material for many industrial projects due to their cost-effectiveness and broad application range.

Outer Diameter：1/2"-8" (Φ21.3-219mm，Thickness:1.2 -5.75mm，Length: 6m)

Standards: ASTM A53，API 5L, ASTM A252,GBIT9711,GBIT3091，SY/T5037、YIT5040，T/CAMT20