Quality
Machining Solutions
FREQUENTLY ASKED QUESTIONS
WHAT IS THE DIFFERENCE BETWEEN MANUAL MACHINING AND CNC MACHINING?
Manual machining is performed by a skilled operator who controls the machine directly—requiring precision, patience, and years of experience. Our operators bring over 25 years of expertise to each part. In contrast, CNC (Computer Numerical Control) machining uses programmed instructions from CAD (Computer Aided Design) files to precisely control the cutter, enabling high accuracy, repeatability, and the ability to produce identical parts efficiently. Our CNC operators are specially trained on these systems.
WHAT IS PLASMA CUTTING?
Plasma cutting (or plasma arc cutting) employs superheated, ionized gas to create a controlled cutting arc. Compressed gas passes through a focused nozzle, where an electrode near the tip ionizes the gas, creating a plasma channel. This plasma—carrying electrical current—melts the metal, allowing for fast, precise cuts, even on curved or angled shapes.
WHAT FILES ARE REQUIRED FOR QUOTING A MACHINING OR FABRICATION JOB?
STEM files are preferred for quoting, but we can provide estimates based on drawings or sketches—even older versions or draft sketches from previous projects will work.
ARE CAD FILES REQUIRED FOR CNC MACHINING?
Yes, we rely on CAD files for precision in CNC machining. While STEM files are preferred, if you can’t produce them, we offer drafting services for a modest fee.
DO YOU OFFER REVERSE-ENGINEERING SERVICES?
Absolutely. Our trusted, in-house team is equipped to reverse-engineer many existing products using our proven processes.
WHAT MATERIALS CAN BE CNC MACHINED?
We work with a wide range of materials—both standard and exotic—including steel, aluminum, copper alloys, titanium, and nickel alloys.
WHAT ARE YOUR PAYMENT TERMS?
Our standard terms are Net 30 (full payment to be made within 30 days of the invoice date). We also accommodate payment upon delivery when necessary.
WHAT'S THE DIFFERENCE BETWEEN ISO CERTIFICATION AND API-Q1 COMPLIANCE?
ISO standards are an international set of quality management guidelines issued by the International Organization for Standardization; use of these guidelines ensures a robust quality management system. R&H Machine is proud to be ISO-9001 Certified by an independent auditor, and abides by all ISO-approved best practices. API-Q1 is an ISO-derived sub-standard issued by the American Petroleum Institute which provides specific guidance to oil and gas companies and their suppliers, with many additional requirements which exceed ISO best-practice recommendations. R&H Machine’s compliance with API-Q1 standards ensures that the rigorous quality and safety standards of the oil and gas industry are matched and surpassed.
WHAT PARTS DO YOU COMMONLY MACHINE FOR THE OIL AND GAS INDUSTRY?
Typical parts include plug catchers, swivels, and mini snubbing units. However, we’re capable of machining a wide variety of parts for any industry—and happy to accept whatever challenges we’re given. Just ask and see what we can do!
WHAT ARE YOUR LEAD TIMES FOR PROJECTS?
Lead times depend on project complexity and can range from 2 days to 6 months. Many standard items are available immediately. Rush services are available for an additional fee—just let us know during quoting.
CAN YOU RETROFIT THREADS ON-SITE?
Yes. We can retrofit threads or perform other services at your location when it’s more practical than bringing parts into the shop.
DO YOU HAVE A MINIMUM ORDER QUANTITY?
No. We routinely handle one-off custom jobs—no minimums required.
DO YOU CARRY BUSINESS LIABILITY INSURANCE?
Yes — we are fully insured for your peace of mind.
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Burrows R & H Machine, LLC dba R & H Machine 2694 S. Access Rd, Longview, TX 75602
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