RPM and Associates, Inc. Rapid City, SD

Products and Services -> Coal Piping

Sub-links: Elbows | Riffle Housings and Elements | Nozzles | Coal Chutes

Let RPM & Associates rebuild your worn coal pipe and elbows with our proven chrome carbide overlays. Welded elbows and tangents provide great coal flow and long wear life without the weight or adhesion problems of ceramic tiles. Our long-lasting, abrasion-resistant hardfacing can be applied to coal transporters from 3” to 28” diameter, and up to five times the centerline radius size. We also manufacture and rebuild ash spools, riffle housings, and a variety of other pipe-related parts used in high-abrasion environments.

Wear resistant pipe Elbows

RPM has extensive knowledge in repair, rebuilding, and hardfacing all sizes and degrees of elbows. Smooth radius or flat back, RPM has a wear solution for you.
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Coal Pipe Elbow Riffle Housings Riffle Housings and Elements

Send us your damaged housing units, and we’ll return to you a refurbished, chrome carbide overlayed unit ready for service. RPM also manufactures extended wear life riffle housing inserts using our chrome carbide overlay plate.
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Coal Pipe Nozzles Nozzles

We manufacture new coal nozzles with special hardfacing to further extend the production life.
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Coal Chutes Coal Chutes

We manufacture new coal chutes using our MK chrome carbide overlay plate.
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Bottom Ash Pipe Bottom Ash Pipe

RPM's custom bottom ash handling systems include tungsten carbide-lined two-piece combining tubes and hardfaced long-sweep elbows for superior wear life.


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About RPM & Associates

About RPM and Associates

Safety Over 500 acoustic panels have been strategically placed throughout our shop to keep decibel levels below OSHA's minimum requirement for mandatory ear protection; however, ear protection is provided to all employees to be used at their discretion.

Rapid City, the Black Hills, and South Dakota ... Our Home

About Rapid City and the Black Hills

Mount Rushmore was built to memorialize the men who founded, expanded, preserved, and unified America. The austerity of the 60-foot granite faces looking eastward across the country is enough to humble any visitor.