Precision Machining
& Expert Welding
For The Petroleum
Industry.
For over 35 years, oilfield operators and drilling contractors have trusted Petroleum Alloy Engineering for mission-critical CNC machining, certified welding on all alloys, API connections, rotors, stabilizers, and custom downhole components — built tough, delivered on time.
- CNC turning & milling on exotic alloys
- Certified welders — Inconel, stainless, carbon
- API thread cutting & gauging in-house
- Open Monday–Friday · 8:00 AM – 5:00 PM
Built for the Oilfield.
Engineered to Last.
From downhole tools to wellhead components, we deliver precision-machined parts and certified welding services that perform under the harshest conditions in the petroleum industry. Open Monday–Friday, 8am–5pm. Saturday & Sunday closed.
CNC Precision Machining
Multi-axis CNC turning and milling for downhole tools, drill collars, and complex oilfield components held to ±0.0005" tolerances.
Expert Alloy Welding
Certified TIG, MIG, and stick welding on Inconel, stainless, carbon steel, and exotic alloys. ASME and API qualified procedures.
API Connections
Premium and API-spec threaded connections including NC, REG, IF, and proprietary threads for drill pipe, tubing, and casing.
Rotors & Stabilizers
Custom-built mud motor rotors, integral blade stabilizers, and reamers engineered for maximum ROP and extended downhole life.
Custom Oilfield Parts
From prototype to production runs — bit subs, crossovers, lifting subs, valves, and proprietary tooling built to your exact specifications.
Repair & Refurbishment
Re-cut threads, hardbanding, weld build-up, and full refurbishment of worn drilling tools — saving operators up to 70% vs. new.
Monday – Friday · 8AM – 5PM
35 Years of
Oilfield Grit.
Since 1989, Petroleum Alloy Engineering has been a trusted name in Conroe, Texas — building the downhole tools, drill collars, and custom components that keep the Permian, Eagle Ford, and Haynesville drilling. We're not a corporate vendor. We're machinists, welders, and operators who understand what it takes to keep rigs turning to the right.
Every part that leaves our floor is inspected, certified, and built to survive the well bore.
The PAE Process
A proven four-stage workflow that takes your component from concept to certified, field-ready hardware.
Consultation & Specs
We review your prints, discuss application requirements, downhole conditions, and material selection.
Engineering & Design
CAD/CAM programming, tool path optimization, and metallurgy review to engineer the right solution.
Precision Manufacturing
CNC machining, certified welding, heat treatment, and hardbanding executed by master craftsmen.
QC Inspection & Delivery
CMM inspection, MPI, dimensional reports, and MTRs delivered with every component. On-time, every time.
Request A Quote
Get in touch with our Oilfield machining shop in Texas for expert API connections machining, CNC machining oilfield parts, and oilfield welding services. From rotor machining and stabilizer machining to API thread repair, our team delivers precision machining in Conroe, TX. We're open Monday – Friday, 8:00 AM – 5:00 PM. Whatever your spec, our petroleum machining services are built to perform under pressure.
Send Us A Message
Tell us about your project and we'll respond within 24 hours.
Shop Location
Petroleum Alloy Engineering
10858 FM Rd 2432
Conroe, TX 77303