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STANDARD SPECIFICATIONS FOR WELDING PROCEDURES
The sole purpose of welding procedures is to describe the details that are to be followed in the welding of specific materials or type of joint. The following is a list of standard specifications for welding procedures that are normally covered in welding procedures…
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Welding Standards-Positions for Welding Pipe
Positions for Welding Pipe For welding pipe in shops, power plants, oil refineries, and chemical plants for crude oil, gasoline, and natural gas, the same basic welding positions described previously are used. Flat Butt Weld Pipe Position…
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NONDESTRUCTIVE TESTING – Visual Inspection (VT)
The NDT (nondestructive testing) methods are: Visual Inspection – VT Liquid Penetrant Testing – LT Magnetic Particle Testing – MT Radiographic Testing – RT Ultrasonic Testing – UT Eddy Current Testing – ET (not used in field inspection) Acoustic Emission Testing – AET (not…
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Preheating in Welding Procedure Specification
Preheating in Welding Procedure Specification: Preheating is the act of heating the base metal before starting to weld. It is considered very essential in high thickness materials, Cr-Mo Steels & HSLA High Speed Low Alloy steels, etc… Here we are going to answer the below topics …
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Welder Qualification Certificate
Welding Welding – Process of joining similar metals (or thermoplastic). By heating them to suitable temperature May or may not require pressure May or may not require Filler metal Brazing -Process of joining dis-similar metals. By Melting and pouring the filler metal and pouring…
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Welding Inspections- All you need to know about Metals
Welding is a process of joining similar metals, i.e. Metals with same base content and similar properties or melting point.There are different types of welding methods based on the process of welding. Generally it involves heating of the metal and fusing them, with or…
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Ultrasonic testing of Weld Joints
Ultrasonic Testing involves utilization of ultrasonic sound waves to detect defects inside a material. The welded joints have possibilities of defects inside the welds , or sometime near the weld zone. The few of defects that are often found in welds are Porosity, Cracks, Slag Inclusion,…
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What is stud welding?
Studs are welded to steel structures for the purpose of anchoring. They are used as anchoring for Concretes, Insulation etc., The studs may be threaded or headed bolts.The stud is inserted into the chuck of the welding…
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