At Heartland Enterprises, we operate state-of-the-art honing equipment that improves the geometric form and surface texture on pipes, tubes, cylinders, and liners.  Our abrasive stones are used along a controlled path to remove minute amounts of material in order to attain almost perfect cylindricity on parts.

We can achieve surface finishes between 6-8 RMS with tolerances as tight at +/-0.001″ or meet virtually any customer specified requirement.  Our facility is equipped with a Sunnen Model HL 80 precision horizontal hone that handles diameters from 3″ to 22″ with a 60″ stroke.  We also have a Sunnen Model MBC-1805 hone with auto sizing and power stroke capability; accommodating diameters ranging from .160″ to 3.5″ with a 6″ stroke.

Each of our honed parts undergoes an extensive testing and inspection process that our customers rely on for high performance applications.  As an AS9100D / ISO 9001:2015 certified facility, we conduct inventory lot control, dimensional certification, traceability, certified material test reports, heat analysis, and statistical process control.  We typically handle runs between 5 to 100 pieces but we’re also fully equipped to perform high volume or specialty production runs.  We can serve our large customer base with a comprehensive, turnkey experience; taking the lead for all raw material purchasing, machining, project management, subcontracting, and delivery schedules.

Our honing services are widely used across a broad range of industries including aerospace, oil & gas, agriculture, manufacturing, military, power generation, and semiconductors.


Honing Capabilities Pipes
Surface Finish 6 to 8 RMS
Tolerance (±)1 0.001 in
Equipment Sunnen model HL 80 Precision Horizontal Hone, 23 Inch (in) diameter x 60 Inch (in) stroke
Sunnen model MBC-1805 Hone with auto sizing and power stroke 0.060 to 6 Inch (in) diameter capacity
Intended Application Machine Components
Engine Components
Hydraulic Components
Rod Ends
Production Volume Minimum 5
Specialty Production Shop
High Volume
Available Lead Times2 4 w
Quality/Inspection Inventory Lot Control
Dimensional Certification
Certified Material Test Reports
Heat Analysis and Testing Certification
Statistical Process Control (SPC)
1 Customers Tight Tolerances Met
2 Quoted on job by job basis

Additional Information

Industry Focus Aerospace
Gas and Oil
Power Generation
Industry Standards International Organization for Standardization (ISO) 9001:2015 / AS9100D
File Formats Adobe Illustrator (AI)
Drawing Interchange Format, or Drawing Exchange Format (DXF)
Initial Graphics Exchange Specification (IGES), ANSI file format.
Inventor (IDW, IPT)
Joint Photographic Experts Group (JPG or JEPG)
Product Data Exchange using STEP (PDES), Standard for the Exchange of Product Model Data. A standard format for exchanging data between advanced CAD and CAM programs.
Portable Document Format (PDF)
Pro-E or Pro/Engineer (DRW, PRT, XPR)
Standard ACIS Text (SAT)
3D ACIS Model File
SolidEdge (DFT)
Standard for the Exchange of Product Model Data (STEP)
Tagged Image File Format (TIFF)
Unigraphics (PRT)