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Spiralweld Pipe

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Spiral Buttweld Pipe

Naylor Spiral Buttweld Pipe is manufactured in accordance with ASTM A-139; ASTM A-252. It is made from steel strip on automatic equipment designed by Naylor that forms, sizes and completes the manufacture; first, by a sound initial penetrating weld, then followed by a second weld along the outside spiral seam. Each length of completed Naylor Spiral Buttweld Pipe is carefully inspected, and where service conditions require, a hydrostatic test is given to ASTM requirements.

Naylor Spiral Buttweld Pipe is produced in a number of grades of steel to give users a choice of piping to meet their specific needs. From this selection of steels, a complete system can be developed for handling such diverse applications as abrasion-resistant service, corrosion-resistant piping, construction purposes and general industrial uses. In addition to the steels shown, other alloys can be furnished to meet your service requirements. If a size is required that is not listed, it can be made to your order.

You can view all standard sizes and wall thicknesses in our catalog.


Naylor Spiral Buttweld can be furnished in industrial standard lengths of 20'0"; line pipe standard lengths of 40'0", 50'0" and 60'0"; and structural lengths up to 93'0". All piping can be cut to any required length to tolerance of plus-or-minus 1/8".


Naylor Spiral Buttweld Pipe features two welds along the spiral seam. This creates a pipe structure in which the weld is as strong or stronger than the parent metal.


Because thickness tolerances of steel strip are governed by the standards established by the American Iron and Steel Institute, uniform wall thicknesses are assured. This minimizes irregularities which could cause uneven wear.


The Naylor manufacturing process creates a pipe that maintains an accurate diameter throughout its length. The uniformity of the pipe ends speeds connections, whether mechanically coupled or welded.


Every length of Naylor pipe is inspected and where required is tested to the hydrostatic mill test pressure specified in the applicable ASTM specification.


Naylor Spiral Buttweld Pipe is manufactured in a wide range of wall thicknesses. The fact that this pipe is available in lighter weights than other pipe makes it possible to save money, not only on the initial cost but also in transportation, handling, and installation. It means that by sizing the diameter of the pipe to the exact requirements, with exact lengths and factory-sized ends, the greatest economies can be realized.

Steel Analysis

Naylor Spiral Buttweld Pipe is offered as standard in grades of steel shown. Variations from these analyses are also available to meet your specific applications.

Basic Carbon Steel (ASTM A-139)

Carbon .30 Max.
Manganese 1.0 Max.
Phosphorus .035 Max.
Sulpher .035 Max.

Abrasion-Resistant Steel

Carbon .30 - .35
Manganese 1.00 - 1.50
Phosphorus .008 - .025
Sulpher .035 Max.
Silicon .15 - .30

Structural Steel (ASTM A-252)

Physical Requirements Grade 2 Grade 3
Tensile Strength Min. 60,000 psi 66,000 psi
Yield Point Min. 35,000 psi 45,000 psi

Weathering Steel (ASTM A-588)

Other Steels Available

Naylor also offers steel grades suitable for your specific applications including copper bearing, low-alloy high strength steels, as well as grades alloyed to meet your exact requirements.