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1.800.348.4RPM

RPM and Associates, Inc. Rapid City, SD

Products and Services -> Coal Piping

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

Elbows

RPM & Associates repairs and rebuilds both smooth radius and flat back elbows. Our MK chrome carbide overlays can be applied to coal pipe from 3" to 28" in diameter and up to five times the center line radius.

Contact Us today about your coal piping project and let us design a cost effective solution for you that extends the production life of your coal pipe.

Smooth Radius Elbows

The pictures shown below demonstrate the repair and hardfacing process of a typical smooth radius coal pipe elbow from start to finish.

Place your mouse over the smaller image on the left to show the larger image on the right.

WORN ELBOW
  WORN ELBOW  
PIPE RESTORED TO 0.5-INCH WALL THICKNESS BEFORE HARDFACING
  PIPE RESTORED TO 0.5-INCH WALL THICKNESS BEFORE HARDFACING  
STRUCTURAL REPAIR OF AN ELBOW
  STRUCTURAL REPAIR OF AN ELBOW  
AUTOMATIC WELDING OF AN ELBOW
  AUTOMATIC WELDING OF AN ELBOW  
360 DEGREE HARDFACING EXAMPLE
  360 DEGREE HARDFACING EXAMPLE  
ELBOWS READY TO BE SHIPPED
  ELBOWS READY TO BE SHIPPED  
IAGRAM SHOWING HARDFACING LAYER PROFILE FOR A TYPICAL ELBOW
  IAGRAM SHOWING HARDFACING LAYER PROFILE FOR A TYPICAL ELBOW  
ABRASION RESISTANT PIPE WITH 180 DEGREE HARDFACING
  ABRASION RESISTANT PIPE WITH 180 DEGREE HARDFACING  
The pictures shown below demonstrate the repair and hardfacing process of a typical smooth radius coal pipe elbow from start to finish.

Guaranteed to Fit

At RPM we take extra steps to ensure a proper pipe fit in the field. Ensuring wall thickness, radius, and flange orientation are all part of our standard operating procedure

Place your mouse over the smaller image on the left to show the larger image on the right.

RPM OVERLAYED PIPE IN SERVICE
  RPM OVERLAYED PIPE IN SERVICE  
ENSURING PERFECT FIT
  ENSURING PERFECT FIT  
At RPM we take extra steps to ensure a proper pipe fit in the field. Ensuring wall thickness, radius, and flange orientation are all part of our standard operating procedure

Flat Back Elbows

The pictures below show a sample liner that was manufactured in June of 2007 for installation in a flat back elbow. After 28 months of service, the liner shows minimal wear. Protected by RPM's special MK chrome carbide overlay, this elbow will be in production for a long time.

Place your mouse over the smaller image on the left to show the larger image on the right.

FLAT BACK ELBOW
  FLAT BACK ELBOW  
NEW CUSTOM MADE WEAR LINER JUNE 2007
  NEW CUSTOM MADE WEAR LINER JUNE 2007  
WEAR LINER AFTER 28 MONTHS OF SERVICE OCT. 2009
  WEAR LINER AFTER 28 MONTHS OF SERVICE OCT. 2009  
WEAR LINER AFTER 28 MONTHS OF SERVICE OCT. 2009
  WEAR LINER AFTER 28 MONTHS OF SERVICE OCT. 2009  
The pictures below show a sample liner that was manufactured in June of 2007 for installation in a flat back elbow. After 28 months of service, the liner shows minimal wear. Protected by RPM's special MK chrome carbide overlay, this elbow will be in production for a long time.

About RPM & Associates

About RPM and Associates

RPM returns journals to original specifications and utilizes redesigned seals to keep oil cleaner, longer.

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

About Rapid City and the Black Hills

The Black Hills are home to roughly 100 mountain goats. Despite their common name, mountain goats are actually members of the antelope family.