History Of Welding Aluminum

The GTAW process is quite often a viable option for welding aluminum.  It was developed in 1944 and is still used to weld aluminum alloys today.  Some of the highest quality welds used in critical applications, such as full penetration pipe welds on cryogenic pressure...

What is the Effect of Heat Input on Weld Mechanical Properties?

Welding variables have minimal effect on the final welded joint for many applications that involve thin plain carbon steel such as A36 or similar grades. However, the variables become much more critical when welding higher-strength or alloyed base materials, focusing...

Causes Of Defects In Concrete Structures

Concrete is known to be a very versatile and reliable material. Construction errors and negligence can lead to defects in a concrete structure. These defects in concrete structures can be due to:  Poor construction practicesPoor quality controlPoor structural design...

What A Welding Inspector Should Know About Preheating And Post-Weld Heat Treats

When welding some base materials and for some service conditions, preheating and/or post-weld heat treatment may be required. These thermal treatments are generally required to ensure suitable weld integrity and will typically prevent or remove undesirable...

An Introduction to Mechanical Testing for Welding Procedure Specifications

General: The purpose of WPS/PQR Qualification is to ensure that the fabricator's welding procedures are qualified before the job application, per the Customer's requirements. This post covers the welding jobs performed in the production of platforms (including the...

Upfront Welding Inspection Considerations

Welding inspection involves much more than simply checking the accuracy of welds after they are made. Inspectors must know codes, standards, materials, and other fabricating processes. Welding inspection is not something to be taken lightly. Lives can depend on the...

A Welding Inspector’s Tools of the Trade

Weld inspectors, especially those new to the trade, put a lot of emphasis on the equipment needed to do the job: flashlight, mirror, high-low gauge, pit gauge, bridge camera, and a borescope. However, this isn’t the entire toolkit. A welding inspector must also know...

Third-Party Inspection for Storage Tank

The Third-Party Inspection for Storage Tank article gives an example methodology for Storage Tank review and testing in the shop and the field. In addition, you may review previous articles on storage tank inspection and test plans. This article directs every...

The most abused NDT?

Visual inspection is a non-destructive testing (NDT) weld quality testing process where a weld is examined to determine surface discontinuities. It is the most common method of weld quality testing and the most abused form of NDT by any stretch of the...

Tensile Properties

Tensile Testing, also known as tension testing, is a destructive engineering and materials science test whereby controlled tension is applied to a sample either as a load for proof testing or until it entirely fails. Tensile properties indicate how the material will...

Tensile Properties

Tensile Testing, also known as tension testing, is a destructive engineering and materials science test whereby controlled tension is applied to a sample either as a load for proof testing or until it entirely fails. Tensile properties indicate how the material will...

Introduction to Destructive Weld Testing

As the name suggests, destructive weld testing involves the physical destruction of a completed weld to evaluate its strength and characteristics. This method of testing is frequently used for the following applications: Welding procedure qualificationSampling...

Third-Party Inspection for Valve

The Third-Party Inspection for Valve article provides a sample valve inspection and testing procedure in the manufacturing shop. It is particularly suitable for inspecting gates, Globe, Ball, and Check Valves. This article should be reviewed with valve inspection and...

Common WPS Issues

Common WPS Issues

8 Common Problems with Welding Procedures A successful welding management program is based on well-written welding procedure specifications (WPS). It is the main reason the quality welds are made along with production rates. Surprisingly enough, many fabrication shops...

General Visual Inspection of Welds

Visual inspection is probably the most unappreciated and often abused method of welding inspection.  Because of its simplicity and the absence of sophisticated equipment, the potential of this method of examination is often underestimated.   However,...

How to Perform a Welding Test and Inspection

There are many ways to inspect welds or materials, both destructive and non-destructive.    As the name suggests, a destructive welding test involves the physical destruction of the completed weld. This method of testing is used frequently for several...

Third Party Inspections and What it Means?

Modern Third-Party Inspection alludes to independent inspection services provided by inspection agencies. Pittsburgh Mineral & Environmental Technologies (PMET) is one of these agencies. This blog post explains TPI companies, TPI definitions, and TPI...