Types & Grades

While much of our company inventory is composed of Surplus and Secondary piping, there is a diverse array of structural pipe grades that this pipe can be utilized for. Below you will find a very extensive list of both Applications and Industries that utilize the types of pipe we supply. Raphoon LLC can from time to time offer pipe with papers that support these common structural pipe grades as well.

Carbon steel

• A53 - structural pipe and tubing.
• A252 Spec Grade 1, Grade 2, Grade 3 Steel Pile Pipe
• A500 - structural pipe and tubing.
• A501 - structural pipe and tubing.
• A1085 - structural pipe and tubing.

Pipe Manufacturing Methods and Uses

While there are several common methods of manufacturing pipe, there are some industries and uses that often call for specific processes. Following is a list of pipe types that Raphoon,LLC commonly utilizes in the structural trades.

• Electric Resistance Welded (ERW) welded pipe is roll formed and welded to produce a tube. This structural pipe is welded longitudinally, manufactured from Strip or Coil and can be manufactured up to 24” OD. ERW pipe is generally smooth and well rounded lending itself to be suitable for sign poles, bollards, dredging, columns, and multiple fabrication purposes.
• Double Submerged Arc Welded pipe (DSAW,LSAW) is formed from a single piece of steel plate by rolling or pressing. The longitudinal seam is welded both inside and outside using the submerged arc welding process. DSAW pipe has a wide array of uses similar to those using ERW. sign poles, piling, bollards, dredging, columns, and multiple fabrication purposes.
• Seamless (SMLS) tube is extruded and drawn from a single steel billet which produces a pipe without any weld seam. A seamless tube offers a higher range of safety measures and is more expensive than a welded tube. Some products that are commonly made from seamless pipe are pilings, caissons, heat exchangers, streaming tubes
• Spiral -Welded Pipe (SPRL, SSAW) or Helical welded pipe is cold formed from coil and welded in a single, continuous process. The spiral welding process is fast, flexible, and cost efficient. This process is capable of producing very large diameters and/or long lengths of pipe. Widely used for Casings, Culverts, Foundations, Pipe Piles, Ventilation Ducts, Pylons, and Pillars