Spiral Welded Pipe

Material:

Q235A，Q235B、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb、16Mn、20#、Q345、L245、L290、40#、60#、X42、X46、X70、X80。

Dimensions:

The size range of spiral welded pipes is usually between DN150mm and DN3000mm in diameter. The wall thickness and length will also vary according to different diameters and uses. Specifically:

‌Diameter‌: The diameter of the spiral welded pipe should comply with relevant standards and is usually between DN150mm and DN3000mm.

‌Wall thickness‌: The wall thickness should be determined according to different diameters and uses. There is no uniform standard thickness, but it will be designed according to the use environment and pressure level of the pipeline.

‌Length‌: The length of the spiral welded pipe is usually between 3m and 12m, but it can also be customized according to specific needs.

In addition, the curvature of the spiral welded pipe should comply with relevant standards and should not be too large or uneven.

Description：

Spiral welded pipe: It is made by rolling low-carbon structural steel or low-alloy structural steel strip into a tube blank at a certain spiral angle (called forming angle), and then welding the tube seam. It can produce large-diameter steel pipes with narrow strip steel. Its specifications are expressed by outer diameter * wall thickness. The welded pipe should ensure that the water pressure test, tensile strength of the weld and cold bending performance meet the requirements.

Q235A，Q235B、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb、16Mn、20#、Q345、L245、L290、40#、60#、X42、X46、X70、X80。

The specifications and dimensions of spiral welded pipes mainly include diameter, wall thickness and length. ‌

Diameter

The diameter range of spiral welded pipes is usually between DN150mm and DN3000mm, and the maximum diameter can reach 3620mm‌12. The diameter specifications can be customized according to specific needs.

Wall thickness

The wall thickness of spiral welded pipes varies according to different diameters and uses. For example, the wall thickness of DN200 is generally 6mm, and the wall thickness of DN300 is 7mm‌. The size of the wall thickness directly affects the strength and bearing capacity of the steel pipe.

Length

The length of spiral welded pipes is usually between 3m and 12m, and the specific length can be customized according to needs‌. Longer steel pipes are suitable for occasions where longer straight pipe sections are required.

Spiral welded pipes are mainly used in tap water projects, petrochemical industry, chemical industry, power industry, agricultural irrigation, and urban construction. For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural use: as piling pipes, bridges; docks, roads, building structure pipes, etc.

The technical parameters of spiral welded pipes mainly include the following aspects:

‌Diameter range‌: The diameter range of spiral welded pipes is generally Φ300-Φ1500mm‌.

‌Material specifications‌: Spiral welded pipes can use steel plates or steel strips of different materials. Common materials include Q235B, 16Mn, Q345B, L245, L290, X42, X46, X60, X80, etc. ‌2.

‌Wall thickness‌: The wall thickness of the spiral welded pipe can be adjusted according to specific application requirements, and the wall thickness range is usually within a certain range‌.

‌Production speed‌: The production speed of the spiral welded pipe machine is relatively fast, and the belt speed can reach 3-4 meters/minute at the fastest.

‌Cutting method‌: Plasma automatic cutting is used to ensure cutting accuracy and efficiency‌.

‌Equipment weight and size‌: The total weight of the spiral welded pipe machine is about 1000kg, and the main machine size is 2.0x2.5x1.4m‌.

‌Application fields of spiral welded pipes‌:

Spiral welded pipes are widely used in pipeline engineering fields such as petroleum, chemical industry, natural gas, heating, water supply, sewage treatment, piling, bridges, steel structures, military industry, shipbuilding, pharmaceuticals, papermaking, water supply and drainage, and hydropower stations.