Welding Technology
25 courses · Las Positas College · 2026-2027 Catalog
Classes: Summer 2026 · Fall 2026
WLDT 1 Welding Camp
- Units
- 1
- Hours
- 9 hours lecture,, 27 hours laboratory
- Transfers to
- CSU
This course is designed to introduce the basics of shop safety, hand tools and welding. Fabrication of simple metal projects. Emphasis on practical uses and applications.
WLDT 10 Machining for the Metal Trades
- Units
- 4
- Hours
- 36 hours lecture,, 108 hours laboratory
- Transfers to
- CSU
This course is intended to show how machine tools are used in the metal trades and manufacturing, as well as how machine tools operate and when to use one particular machine instead of another. The advantage and disadvantage of various machining techniques as well as their application in the fabrication process are explored. Students will learn the use of drawings, hand tools, precision measuring tools, drilling machines, grinders, lathes, milling machines, and other specialized tools used to shape and finish metal and nonmetal parts. Additive and subtractive manufacturing techniques as well as related processes are explored.
WLDT 55 Print Reading for Industry
- Units
- 2
- Hours
- 36 hours lecture
- Transfers to
- CSU
Interpreting and visualizing drawings and prints used in industrial settings. The role of prints in the digital age, geometric dimensioning and tolerancing to current standards. Foundational skills needed for print reading success, including basic mathematics, geometry principles, measurement tools, and the design process. Welding symbols and their use in manufacturing.
WLDT 61 Welding Ferrous Metals
- Units
- 3
- Hours
- 54 hours lecture
- Transfers to
- CSU
Theory and safety of welding ferrous metals including steel, alloy steels, stainless steel, and cast iron for industrial applications. Welding processes SMAW, FCAW, GMAW, GTAW, as well as thermal cutting equipment, uses and applications will be covered. Discussion of American Welding Society Codes, nomenclature, terminology and welding symbols. Physical and mechanical properties of steels, numbering systems and filler metal selection will be discussed. Job opportunities, welder qualification testing and inspection, as well as welding procedure specifications will be explored.
WLDT 61AL SMAW Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Skills of Shielded Metal Arc (SMAW) welding in the flat, horizontal, vertical and overhead positions to American Welding Society code specifications. Oxy-fuel flame, plasma, and carbon arc cutting. Safe use and handling of welding equipment and consumables.
WLDT 61BL FCAW Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Flux Cored Arc (FCAW) welding in the flat, horizontal, vertical and overhead positions to American Welding Society code specifications. Oxy-fuel flame, plasma, and carbon arc cutting. Safe use and handling of welding equipment and consumables.
WLDT 62 Welding Nonferrous Metals
- Units
- 3
- Hours
- 54 hours lecture
- Transfers to
- CSU
Theory and safety of welding non ferrous metals including but not limited to Aluminum, Magnesium, Copper, Nickel, Titanium and their alloys for industrial applications. GMAW, GTAW, flame cutting, plasma and carbon arc cutting processes equipment, uses and applications will be covered. Discussion of American Welding Society Codes, nomenclature, electrode and wire selection will occur. Physical and mechanical properties of nonferrous metals, numbering systems and filler metal selection will be discussed. Job opportunities, welding symbols and hazardous material regulations.Welder qualification testing and inspection, as well as welding procedure specifications will be explored.
WLDT 62AL GTAW Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Skills of Gas Tungsten Arc (GTAW) welding in the flat, horizontal, vertical and overhead positions to American Welding Society code specifications. Oxy-fuel flame, plasma, and carbon arc cutting. Safe use and handling of welding equipment and consumables.
WLDT 62BL GMAW Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Gas Metal Arc Welding (GMAW) welding in the flat, horizontal, vertical and overhead positions to American Welding Society code specifications. Oxy-fuel flame, plasma, and carbon arc cutting. Safe use and handling of welding equipment and consumables.
WLDT 63 Welding Layout and Fitting
- Units
- 2
- Hours
- 27 hours lecture,, 27 hours laboratory
- Prerequisite
- WLDT 61AL or WLDT 61BL or WLDT 62AL or WLDT 62BL, may be taken concurrently
- Transfers to
- CSU
Interpretation of welding blueprints by making welding layouts and weldment fitups. Current methods, practices, and recommended procedures. Use of jigs, fixtures, holding devices, and welding sequences. Methods of straightening and restoring dimensions to finished product. Laboratory includes SMAW, GMAW, GTAW, and/or FCAW welding, plasma and oxy-fuel cutting.
WLDT 66 Welding Inspection and Testing
- Units
- 2
- Hours
- 27 hours lecture,, 27 hours laboratory
- Transfers to
- CSU
Theory and skills in performing inspections and tests using destructive and nondestructive methods. American Welding Society (AWS) codes and their role in welding inspection. The role and duties of the Certified Welding Inspector (CWI).
WLDT 67A Elementary Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Development and improvement of skills in Shielded Metal Arc (SMAW), Flux Cored Arc (FCAW), Gas Metal Arc (GMAW), and/or Gas Tungsten Arc (GTAW) welding in the Flat (1G and 1F) positions.
WLDT 67B Basic Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Development and improvement of skills in Shielded Metal Arc (SMAW), Flux Cored Arc (FCAW), Gas Metal Arc (GMAW), and/or Gas Tungsten Arc (GTAW) welding in the Horizontal (2G and 2F) positions.
WLDT 67C Intermediate Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Prerequisite
- WLDT 67B
- Transfers to
- CSU
Development and improvement of skills in Shielded Metal Arc (SMAW), Flux Cored Arc (FCAW), Gas Metal Arc (GMAW), and Gas Tungsten Arc (GTAW) welding in the Vertical (3G and 3F) positions.
WLDT 67D Advanced Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Prerequisite
- WLDT 67C
- Transfers to
- CSU
Development and improvement of skills in Shielded Metal Arc (SMAW), Flux Cored Arc (FCAW), Gas Metal Arc (GMAW), and Gas Tungsten Arc (GTAW) welding in the Overhead (4G and 4F) positions.
WLDT 67L Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Transfers to
- CSU
Development and improvement of skills in Shielded Metal Arc (SMAW), Flux Cored Arc (FCAW), Gas Metal Arc (GMAW), and/or Gas Tungsten Arc (GTAW) welding, or other welding related skills.
WLDT 68 Certification Preparation
- Units
- 2
- Hours
- 108 hours laboratory
- Prerequisite
- WLDT 61AL or WLDT 61BL or WLDT 62AL or WLDT 62BL or WLDT 69A or WLDT 69B
- Transfers to
- CSU
Welding skills preparation for certification testing. Application of American Welding Society D1.1, American Society of Mechanical Engineers Section IX and American Petroleum Institute 1104 as it relates to welder certification.
WLDT 69AL Beginning Pipe Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Prerequisite
- WLDT 61AL or WLDT 61BL or WLDT 62AL or WLDT 62BL
- Transfers to
- CSU
Practical application of skills with respect to; pipe joint preparation and design, API (American Petroleum Institute) ASME (American Society of Mechanical Engineering) and AWS (American Welding Society) welding codes specification for pipe, tubing and pipe fittings, analysis of joint configuration, plasma and flame cutting of pipes, wire and electrodes selections, beginning of pipe welding blue prints, SMAW, GMAW, FCAW and/or GTAW of pipe joints, non-destructive and destructive test and qualitative concepts of evaluation. Welding in the 1G and 2G positions.
WLDT 69BL Advanced Pipe Welding Skills Laboratory
- Units
- 2
- Hours
- 108 hours laboratory
- Prerequisite
- WLDT 69AL
- Transfers to
- CSU
Practical application of skills with respect to pipe joint preparation and design, API (American Petroleum Institute) and AWS (American Welding Society) welding codes specification for pipe and pipe fittings, analysis of joint configuration, plasma and flame cutting of pipes, wire and electrodes selection, additional pipe welding blueprint and welding symbols, SMAW, GMAW, FCAW and GTAW of pipe joints, non-destructive and destructive test and qualitative concepts of evaluation. Welding in the 5G and 6G positions.
WLDT 70 Introduction to Welding
- Units
- 2
- Hours
- 18 hours lecture,, 54 hours laboratory
- Transfers to
- CSU
Basic skills in Shielded Metal Arc (SMAW), Gas Tungsten Arc (GTAW), Gas Metal Arc (GTAW) and Flux Core Arc (FCAW) welding. Oxy-fuel welding and thermal cutting. Emphasis on safety, proper usage, theory and care of welding equipment.
WLDT 71 Welding for the Arts
- Units
- 3
- Hours
- 36 hours lecture,, 54 hours laboratory
- Transfers to
- CSU
Provides basic welding, shop skills and instruction that artistically inclined individuals should know in order to be effective in the process of creating metal art and sculpture. Provides instruction on types of metals (aluminum, iron, steel, cast iron, bronze, stainless steel, etc.), mechanical fastenings, cutting and permanent joining together of metals and alloys through welding processes such as SMAW, GMAW, GTAW, FCAW, oxyacetylene and braze welding, plasma and fuel gas cutting. Instruction includes general shop safety, equipment use, finishing, welding electricity fundamentals, welding consumable identification, and hazardous materials regulation.
WLDT 72 Laser Welding and Cutting
- Units
- 3
- Hours
- 36 hours lecture,, 54 hours laboratory
- Transfers to
- CSU
This course will cover the theory and concepts associated with modern laser welding and cutting of metals and materials. The use of the laser in the manufacturing environment will be shown along with typical applications. The different types of lasers available for welding. The advantages and disadvantages of continuous power laser welding, pulsed laser welding and laser cutting.
WLDT 73 Welding Workplace Safety
- Units
- 1
- Hours
- 18 hours lecture
- Transfers to
- CSU
This course provides the safety knowledge required to operate safely in a welding or construction workplace environment. This course will emphasize hazard identification, avoidance and control as a means to proactively create a safe workplace environment. OSHA safety standards will be emphasized throughout to maintain consistency with workplace environment. This course meets the 10 hour OSHA construction safety training requirements.
WLDT 75 Measurements and Calculations
- Units
- 4
- Hours
- 72 hours lecture
- Transfers to
- CSU
Math calculations based on manufacturing applications. Precision and semi-precision measuring tools used in manufacturing and the role they play in generating numerical data used in shop floor calculations. Use of the calculator to simplify shop floor math applications relevant to the skilled trades.
WLDT 79 Manufacturing Processes
- Units
- 2
- Hours
- 36 hours lecture
- Transfers to
- CSU
This course examines the processes and equipment used in modern manufacturing. This course provides an excellent introduction to today’s manufacturing processes, as well as an overview of the processes and equipment used in modern manufacturing. The course concentrates on the five major types of industrial materials; metals, plastics, ceramics, woods, and composites. It provides thorough coverage of the forming, separating, fabricating, conditioning, and finishing processes related to each material. Understanding the relationship between manufacturing processes, materials properties, materials processing and design.