Spiral Welded Pipe

Spiralweld Pipe

Nucor Skyline has vast experience in manufacturing pipe piling products for the North American steel foundation industry. With our strategically located manufacturing plants, we can service the steel needs of any public or private project throughout the region.

Properties of Nucor Skyline Spiralweld Pipe

Outside diameters up to 120”
Wall thicknesses up to 1”
Custom lengths and thicknesses
Custom fabrication services
Accepted by Departments of Transportation (DOT) in seismically active zones
In-house and third-party testing capabilities
Melted and manufactured in the USA

Applications of Nucor Skyline Spiralweld Pipe

Bearing pile

Deep foundations are required when the shallow soils are not strong enough to support the loads from the structure. Pipe piles are commonly used in deep foundations and transfer the loads from building to stronger soil layers found deep underground. The loads are resisted through skin friction and point bearing. Pipe can be driven either open-ended or closed-ended, with points or plates. If driven with plates, the pipes can then be filled with concrete to add strength to the pile. Usually the money spent on plates, rebar, and concrete would be better spent on a larger, thicker pile. Pipe piles range in size from several inches to several feet in diameter and can be easily spliced to create piles hundreds of feet in length.

Drilled Shaft Casing

Pipe casing, temporary or permanent, is often required during the construction of drilled shafts. The casing is used to hold the hole open while the reinforcement cage and concrete are installed. The ability to inspect the bottom of the hole and the elimination of any variations in the diameter of the finished drilled shaft makes for a much higher quality, finished pile. In the “Standard Guidelines for the Design and Installation of Pile Foundations” ASCE recommends a factor of safety that is 38% higher on the structural capacity of drilled shafts without casing, than those with casing.

Combined Walls

Large diameter pipes have high bending strengths and are often used in combination sheet pile walls. The combination of large diameter pipe piles and steel sheet piles, which is often referred to as combi-walls, pipe-z walls or king pile walls, makes a very efficient system. Like other combined walls, the king pile takes the majority of the load and the sheet pile transfers the load to the pipe and to the soil.

Structural sections

The symmetry of pipe gives it the same bending strength, in any direction, which makes it an excellent product for the resistance of buckling. The stress required to buckle an axial member decreases with length. The radius of gyration has the opposite effect and increases the ability of a section to resist buckling. The W and HP sections have differnt radii of gyration (rx and ry) for the X and Y axes, while remaining constant for a pipe. The end result is that a pipe can take much higher loads for long, unsupported lengths.

Jacked and BORED pipe

The placement of underground utilities is often done with jacked and bored pipe. Sections of pipe are pushed through the ground with hydraulic jacks between excavations or under a hill. The next section of pipe is then spliced onto the first and the jacking continues. Once the jacking is complete, the pipe is cleaned out to install the utilities. This allows the placement of utilities without extensive excavation which can disrupt roads, railroads, homes and businesses.

Sewer/Water Line Pipe

Welded steel pipe provides an effective method for transporting liquids, air, and gas. Steel Pipe is pound per pound stronger than any other type of line pipe. Pipe can be designed to handle both the internal and external pressures of most applications. Welded steel pipe offers many advantages, such as: strength, economy and ease of installation. Nucor Skyline is SPFA certified and manufactures hydrostatically tested pipe in outside diameters ranging from 10-3/4" – 90". Our production process utilizes a double submerged arc weld process in both spiralweld and rolled & welded pipe. Hydrostatically tested pipe lengths range from 30' – 60', wall thicknesses from 0.250" – 2.0" wall and produced to one of the following industry standards: AWWA C200/ASTM A139/ASTM A134.

Advantages of Using Nucor Skyline Spiralweld Pipe

The use of spiral-welded pipes offers various benefits. As previously mentioned, this type of pipe subjects the weld to less stress than its straight-welded counterpart, thereby enabling it to withstand higher pressure. Spiral-welded pipe is more flexible and customizable, making it possible to manufacture larger diameters and greater lengths with varying levels of specification. Another benefit of spiral-welded pipe is its efficiency and cost-effectiveness, which expands the scope of project feasibility at a lower cost.