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1.800.348.4RPM

RPM and Associates, Inc. Rapid City, SD

Products and Services -> Coal Piping

Sub-links: Elbows | Nozzles

Elbows

RPM and 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 Coal Pipe Elbow
WORN ELBOW
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
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
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

About RPM and Associates

About RPM and Associates (12)

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 (1)

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