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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.

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Worn Coal Pipe Elbow
WORN ELBOW
Abrasion resistant pipe
PIPE RESTORED
TO 0.5-INCH WALL
THICKNESS
BEFORE HARDFACING
Structural Repair of a Worn Coal Pipe Elbow
STRUCTURAL REPAIR OF AN ELBOW
Automatic Welding of a Worn Coal Pipe Elbow
AUTOMATIC WELDING OF AN ELBOW
360 Degree Hardfacing
360 DEGREE HARDFACING EXAMPLE
Coal Pipe Elbow Repairs
Repaired Worn Coal Pipe Elbow
ELBOWS READY TO BE SHIPPED
Typical Layer Profile for a Worn Coal Pipe Elbow
DIAGRAM SHOWING HARDFACING LAYER PROFILE FOR A TYPICAL ELBOW
Abrasion resistant pipe with 180 degree hardfacing
ABRASION RESISTANT PIPE WITH 180 DEGREE HARDFACING

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

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RPM Overlayed Pipe In Service
RPM OVERLAYED PIPE IN SERVICE
Ensuring Perfect Fit
ENSURING PERFECT FIT
Coal Pipe Elbow Repairs

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
Flat Back Elbow Wear Plate
NEW CUSTOM MADE WEAR LINER
JUNE 2007
Flat Back Elbow Wear Plate After 28 Months of Service
WEAR LINER AFTER 28 MONTHS OF SERVICE
OCT. 2009
Flat Back Elbow Wear Plate After 28 Months of Service
WEAR LINER AFTER 28 MONTHS OF SERVICE
OCT. 2009
Coal Pipe Elbow Repairs

Additional Photos















About RPM & Associates

About RPM and Associates (0)

RPM manufactures and overhauls pulverizer rolls, journals, tables, and liners for all mill types and sizes.

RPM has successfully rebuilt over 1300 pulverizer rolls and 260 tables on-site since 1986!!!

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

About Rapid City and the Black Hills (0)

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.