Oklahoma Process Piping Journeyman

Oklahoma Process Piping Journeyman Exam: Complete 2026 Study Guide

You're working in process piping, you know your trade, and now you need the credential to prove it. The Oklahoma Process Piping Journeyman exam stands between you and that license — 35 questions, 120 minutes, and a 70% passing score. It's a focused test, but it covers real technical ground: pipe materials, bend calculations, hanger spacing, valve specs, and safe work practices. This guide walks you through everything you need to know about the Oklahoma Process Piping Journeyman exam, from what's on it to how to study for it efficiently. Take a few minutes to read through, then go try our free practice exam to see where you stand.

Exam Overview

The Oklahoma Process Piping Journeyman exam is administered by PSI on behalf of the Oklahoma Construction Industries Board. Here's the quick rundown:

• Questions: 35 scored questions
• Time limit: 120 minutes
• Passing score: 70% — that's 25 correct answers out of 35
• Format: Multiple-choice, open book
• Reference allowed: Pipefitter's Handbook, 3rd Edition (1967) by Forest R. Linsey — you must bring your own copy
• Calculator: Silent, non-printing, non-programmable (no alphabetic keyboard, no paper tape)

The exam tests knowledge specific to the installation, repair, alteration, or extension of piping and tubing that conveys liquids or gases used directly in research, laboratory, or production processes. You take it while employed by a licensed process piping contractor. Because it's open book, the real skill isn't memorizing tables — it's knowing your reference well enough to find answers quickly.

Schedule through PSI at the exam registration page or by calling PSI at (855) 834-8750. You'll need your OK Con ID number from the Construction Industries Board to create your account.

Topics Covered on the Oklahoma Process Piping Journeyman Exam

The exam draws from seven topic areas. Here they are, ranked by how heavily they're weighted:

Piping Installation and Fitting (8 items) — The biggest section. Expect bend calculations (setback, arc length, radius), offset bend travel and run computations, welded fabrications like mitered turns and branch connections, and dimensional data for butt welding fittings, screwed fittings, and flanged fittings.

Pipe Materials, Uses, and Properties (5 items) — Steel and wrought iron pipe by schedule and weight, copper tube types (K, L, M, DWV), plastic pipe materials including PVC, polyethylene, ABS, and butyrate, minimum bending radii, and chemical/corrosion resistance.

Hangers and Supports (5 items) — Hanger types, support spacing for water lines and gas or steam lines, temperature effects on spacing intervals, and support spacing requirements for plastic pipe.

Valves and Controls (5 items) — Gate, globe, angle, and check valves — their types, components, operation, and laying lengths for both butt welding and flanged connections by pressure rating.

General Knowledge and Definitions (6 items) — Pipe and fitting terminology, material identification, schedule designations, measurement units and conversions, and the math and trig functions used in pipefitting work.

Plan Reading (3 items) — Reading bend calculations from drawings and tables, identifying fitting dimensions and laying lengths, offset connections, flange and valve specs, and threaded fitting dimensions.

Safety (3 items) — Safe practices for bending, fabrication, pipe threading equipment, welding and brazing hazards, plastic pipe handling, and hanger installation.

Piping Installation and Fitting is the heaviest section, so put serious time there. But don't ignore General Knowledge — six items is a meaningful chunk of a 35-question exam.

Sample Oklahoma Process Piping Journeyman Practice Questions

Here are five questions in the style of what you'll see on the real exam. Work through them and see how you do — but we're not giving away the answers here. Try our free practice exam to check your knowledge.

Question 1 — Piping Installation and Fitting
When threading PVC pipe, which schedules are recommended for threading, and what is the maximum operating temperature allowed for threaded PVC connections?
- A) Schedules 80 and 120; maximum 120°F
- B) Schedules 40 and 120; maximum 140°F
- C) Schedules 40 and 80; maximum 150°F
- D) Schedules A and 80; maximum 130°F

Question 2 — Pipe Materials, Uses, and Properties
In the standard piping identification system, what color legend letters are used on piping systems identified with a green background?
- A) Red
- B) Black
- C) White
- D) Yellow

Question 3 — Hangers and Supports
You are selecting hangers for a PVC pipe installation where thermal expansion along the pipe axis must be controlled. Which hanger type is recommended for this application?
- A) Saddle-type hanger
- B) Metal compression hanger
- C) Clevis hanger
- D) Ring hanger

Question 4 — Piping Installation and Fitting
For a 180° pipe bend, what is the length of bend formula?
- A) Radius × 3.14
- B) Radius × 2.36
- C) Radius × 2.09
- D) Radius × 2.62

Question 5 — Pipe Materials, Uses, and Properties
When bending PVC pipe, what is the minimum bend radius achievable without evidence of flattening when using a standard bending form?
- A) Four times the pipe diameter
- B) Six times the pipe diameter
- C) Three times the pipe diameter
- D) Five times the pipe diameter

Note the mix: some questions test straight recall (identification system colors), while others require you to apply a formula or pull specific dimensional data from your handbook. That pattern holds across the whole exam.

What Types of Questions to Expect

Our practice question pool covers all seven exam topics with 136 questions total. Here's what each area actually tests — and how many practice questions we've built for it:

• General Knowledge and Definitions (20 practice questions): Terminology from the Pipefitters Dictionary, material identification by type and schedule, dimensional standards, unit conversions, and math/trig formulas used on the job.
• Plan Reading (13 practice questions): Interpreting bend calculations from drawings and tables, reading fitting dimensions and laying lengths, understanding offset geometry, and identifying flange, valve, and thread specs from technical drawings.
• Pipe Materials, Uses, and Properties (19 practice questions): Schedule and weight classifications for steel and wrought iron pipe, copper tube dimensions and applications by type, plastic pipe properties and pressure limits, minimum bending radii, and corrosion resistance.
• Piping Installation and Fitting (32 practice questions): Bend setback, arc length, and radius calculations; travel and run computations for common offset angles; mitered turns and branch connection layouts; and dimensional data for butt welding, screwed, and flanged fittings.
• Hangers and Supports (18 practice questions): Identifying hanger hardware types, applying support spacing tables for water vs. gas/steam service, accounting for temperature effects, and spacing requirements specific to plastic pipe materials.
• Valves and Controls (21 practice questions): Gate, globe, angle, and check valve construction and service characteristics, plus laying length tables for butt welding and flanged ends across pressure ratings.
• Safety (13 practice questions): Safe handling during bending and fabrication, proper threading equipment use, welding and brazing hazards, plastic pipe material handling, and hanger installation safety.

Required Study Materials

This exam is open book, which makes your reference copy essential — not optional.

Required: Pipefitter's Handbook, 3rd Edition (1967) by Forest R. Linsey. This is the only reference allowed in the exam room, and you must bring your own copy. The exam is built around it, so every calculation question, every table lookup, and every dimensional check traces back to this book. Get it early and use it constantly during your prep — not just as a reference, but as a working tool you know inside and out.

Because speed matters on an open-book exam, the way you organize your handbook can make a real difference. Two products worth adding to your prep kit:

Redi-Tag Permanent Colored Tabs — These laser index tabs come in five colors (purple, green, blue, dark blue, and orange) with permanent adhesive. Use them to mark key sections: bend calculation tables, hanger spacing charts, valve laying lengths, and pipe material data. Color-coding by topic means less page-flipping under pressure.

Sharpie Tank Highlighters — The 12-pack with assorted fluorescent colors gives you enough variety to create a consistent highlighting system throughout the handbook. The chisel tip works well for underlining table headers and circling key figures. Let the ink dry before you flip pages — these are wet-ink highlighters.

Between a well-tabbed, highlighted handbook and our full practice exam that mirrors the real test format, you'll be in solid shape.

Study Tips for the Oklahoma Process Piping Journeyman Exam Prep

Start 3–6 weeks out. That's enough time to work through the handbook methodically, practice your table lookups, and run several timed practice sessions without cramming.

Focus on speed, not just accuracy. On an open-book exam, knowing roughly where to look is more valuable than having every number memorized. Use the CIB as your roadmap, then drill the sections that correspond to the heaviest exam topics.

Set your practice bar at 80%. The real cut score is 70%, but if you're consistently hitting 80% or higher in practice, you've built a comfortable margin. Three clean passes at that level is a good green light for test day.

Work through the exam once, then revisit. Answer what you know, skip what you don't, and flag questions to review. Don't let one tricky calculation eat five minutes of clock. Move on and come back.

Manage test anxiety directly. A little nervousness is normal and even useful. If you feel yourself spiraling on a question, take a few slow breaths before moving on. If your test center allows a break, use it — just keep in mind the clock typically keeps running.

Frequently Asked Questions

How many questions are on the Oklahoma Process Piping Journeyman exam and how long do I have?
The exam has 35 scored questions, and you have 120 minutes to complete it. That's just under 3.5 minutes per question — plenty of time if you're efficient with your handbook.

What is the passing score?
You need to answer 70% correctly, which works out to 25 out of 35 scored questions.

What does the exam test?
It covers the knowledge needed to install, repair, alter, or extend piping and tubing that conveys liquids or gases used in research, laboratory, or production processes — the core work of a process piping journeyman.

How much does it cost?
The exam fee is $92 per attempt, whether it's your first time or a retest. Registration fees are not refundable or transferable.

How do I register?
Once the Oklahoma Construction Industries Board approves your application, you can schedule through the exam registration page or by calling PSI at (855) 834-8750. You'll need your OK Con ID number to create an account.

What's the retake policy if I fail?
First failure: wait 30 days before retesting. Second failure and any failure after that: wait 90 days. Plan your prep accordingly — if you fail once, you don't want to burn another 90-day wait.

Does my exam eligibility expire?
No. Once the State approves you, your eligibility doesn't have an expiration date.

Is the exam open book?
Yes. The only permitted reference is the Pipefitter's Handbook, 3rd Edition (1967). You're responsible for bringing your own copy — the test center won't provide one.

Can I bring a calculator?
Yes, as long as it's silent, non-printing, and non-programmable, with no alphabetic keyboard and no paper tape. A standard scientific calculator works fine.

What ID do I need?
One valid, non-expired photo ID with your signature — a state driver's license, state ID card, U.S. passport, military ID, alien registration card, or Canadian government-issued ID all qualify. The name must match your registration exactly.

Start Your Oklahoma Process Piping Journeyman Exam Prep Today

The Oklahoma Process Piping Journeyman license is a real career milestone — and this exam is genuinely passable with solid preparation. Get your Pipefitter's Handbook, grab some tabs and highlighters to organize it, and give yourself enough runway to practice. Start right now with our free practice exam — 10 questions, no account needed, instant feedback. See how you do, identify your gaps, and upgrade to the full practice exam when you're ready to go deep. You've got this.