For CSWIP 3.1 videos in Hindi/Urdu language, please click here. For CSWIP 3.1 videos in the English language, please click here. CSWIP 3.1 is a certification course for working/experienced professionals who wants to become welding inspector. CSWIP 3.1 is a globally recognized course and it may open the doors for many working …
CSWIP 3.1 Video Lectures For Welding Inspector Exam Read More »
For the complete identity of a material we need two things; Material Specification Material Grade For Example, In SA 106 Gr.B the “SA106” is the material specification, and “Gr.B” is the grade of the material. Please note that for a particular specification there may be more than one grade. For example, SA106 has three grades …
ASTM A 36 or SA 36 is basically carbon steel of structural quality which is widely used in industries. It is also known as Carbon Structural Steel. ASTM A 36 is readily available in the following product form; Plates Bars Shapes (beams, channels, angles, etc.) In this article following topics will be covered; 1. …
ASTM A 36 Steel – Mechanical & Chemical Properties and Equivalent Steel Grades Read More »
The mechanical properties of the metals are those which are associated with the ability of the material to resist mechanical forces and loads. The topic of the mechanical properties of materials is of great industrial importance in the design of tools, machines, and structures. These properties are structure sensitive in the sense that they depend …
WHAT IS A KNUCKLE JOINT? A knuckle joint is a type of mechanical joint used to join two components that are loaded under tensile load. One has a fork with holes on either side, forming a double eye, while the other component has a Single eye. The single eye is inserted between double eyes so …
The commonly used terms and definitions related to valves is given below; Actual pressure drop: The difference between the inlet pressure and the outlet pressure of a valve. Actuator: A device used to open/close or control the valve. Key types include electrical, hydraulic, and pneumatic. Movement may be quarter-turn or multi-turn. Actuator stem: A rod …
Pressure Safety Valve / Relief Valve A safety valve is a valve that acts as a protection of equipment from exploding or damaging and it is mainly installed in pressure vessels such as chemical plants, electric power boilers, and gas storage tanks. Safety Relief Valve is a type of valve that automatically actuates when the …
Pressure Safety Valve – What is a Valve (Part – 6) Read More »
Introduction: Aluminum is found on the earth in its oxidized form known as Bauxite. Bauxite is refined to produce Alumina (Aluminium Oxide – Al2O3). Approximately 40% – 60% Alumina i.e. Aluminium Oxide (Al2O3) can be extracted from Bauxite. The Hall-Héroult electrolysis process (invented in 1886) further processes Alumina (Aluminum Oxide-Al2O3) to separate it from oxygen. …
In the Valves Part-1, we discussed what is a valve, its history, and its categorization (Click here to read). In Part-2, we discussed Globe valves (Click here to read). In Part-3, we discussed Gate valves (Click here to read). In Part-4, we discussed Plug valves (Click here to read). In Part-5, we discussed Ball valves …
In the Valves Part-1, we discussed what is a valve, its history, and its categorization (Click here to read). In Part-2, we discussed about Globe valves (Click here to read). In Part-3, we discussed about Gate valves (Click here to read). In Part-4, we discussed about Plug valves (Click here to read). In this part, …
Low Hydrogen electrodes are very popular in the industries because of the following reasons; Ability to produce X-ray quality welds Good weld bead appearance Ability to weld thicker material with high deposition rates Less susceptible to failures and cracks especially Hydrogen Induced Cracks Sound weld metal properties with good toughness A smooth, stable and quiet …
This article covers the following topics/questions; What is stainless steel? Types of stainless steel. Is stainless steel magnetic? Stainless steel welding and weldability. How to select the welding rod or filler wire? we will start this article with the first topic/question i.e what is stainless steel? WHAT IS STAINLESS STEEL? Stainless steels (SS) are essentially …
Underwater welding is used for repairing ships, offshore structures including oil drilling rigs, and pipelines that are submerged in water. Taking out the damaged components from the sea for repair purposes is a costly and time-consuming task. Hence, to save time and money, underwater welding is preferred for the repair works (wherever possible) Russian metallurgist …
In the Valves Part-1, you learned what is a valve, its history, and its categorization (Click here to read). In Part-2, you learned about Globe valves (Click here to read). In Part-3, you learned about Gate valves (Click here to read). In this, you are going to learn about Plug Valves categorized by design. …
In the Valves Part-1, you learned What is a valve, its history, and its categorization (Click here to read). In Part-2, you learned about the Globe valve. (Click here to read) In this, you are going to learn about Gate Valves categorized by design. Gate Valves: Gate Valve is a multi-turn valve that has a …
Scope: In this article fundamentals of heat treatment will be discussed briefly mainly related to the “base material” of welded construction (metallic material) meant for industrial application. In Part-0, we had discussed the basics from a theory point of view generally taught in engineering colleges (Click here to read Part – 0). In the present …
Basics of Heat Treatment for Metallic Material (Part-1) Read More »
Scope: In this article, fundamental concepts of heat treatment will be discussed to give an overview to the reader with no previous knowledge of heat treatment processes. Why Part-0: Well, the readers might be wondering why this part or rather an article has been named as zero. Just like the thermodynamics (the study of particles …
The selection of right welding electrodes is a quite challenging job because we need to consider many factors while choosing the best alternative. In this article, we will discuss the various factors responsible for choosing the right welding electrode for the Shielded Metal Arc welding Process (SMAW) for Carbon steels. The Shielded metal arc welding …
Scope: In part-2, of this article, we had discussed the sequence to be used for qualification of procedure (PQR) which needs to be approved by customer/client/TPI. (Please click here to read that article) Now we shall proceed for performance (welder) qualification i.e Welder performance qualification – WPQ or welder qualification test – WQT (which will …
In Part-3 of this article the Subsection A was covered from UG-36 up to UG-79, to read the Part-3 of this article please click here. To read Part-1 of this article, please click here. To read Part-2 of this article, please click here. This article i.e. Part-4 will deal with the general requirements preceding from …
Summary of ASME BPVC Section VIII Div 1 (Part 4) Read More »
In the Valves Part-1, you learned, What is a valve, its history and its categorization, to read that article please click here. In this article, we will discuss about the valves categorized by design. The list follows as; Globe Valve Gate Valve Plug Valve Ball Valve Butterfly Valve Diaphragm Valve Pinch Valve Piston Valve Needle …
Scope: In part-1 (Click here to read), of this article, we had discussed about the preparation and approval of the weld map, shop weld plan, and proposed welder list which needs to be submitted for the consent of the customer/client/TPI. In this article, we shall discuss the steps required for PQR qualification. In general, the …
In Part-2 of this article, the Subsection A was covered from UG-17 up to UG-35 Design and to read the Part-2 of this article please click here. This article will deal with the general requirements preceding from UG-36 onwards. Also note that the design calculation won’t be dealt within details and the readers are advised …
Summary of ASME BPVC Section VIII Div 1 (Part 3) Read More »
Introduction: Valves are mechanical devices, specifically designed to direct, start, stop, mix, or regulate the flow, pressure and temperature of process fluid. The need of Valve came after piping or plumbing. Plumbing dates back thousands of years in the civilization of human across globe. Valves can be found just about anywhere today, in our homes, …
In Part-1 of this article we had discussed about what ASME SEC VIII DIV I deals, code cases, scope, its use and body of the code. The Subsection A was covered up to UG-16 (Design) and to read the Part-1 of this article please click here. This article i.e part – 2 will deal with …
Summary of ASME BPVC Section VIII Div 1 (Part 2) Read More »
Scope: This article will deal with step by step guide for the preparation of Weld Map, Shop Weld Plan, WPS, PQR & WPQ as per ASME SEC IX for a Static Pressure Vessel designed in accordance with ASME SEC VIII DIV I for non-lethal Service. The Reader must be wondering from where this requirement of …
ASME SEC VIII DIV I deals with the rules for the construction of pressure vessels. This code is a part of ASME BPVC Codes (Click here to learn about the various codes published by ASME). Code Cases are published regularly by the BPVC committee to consider proposed additions and revisions to the code and to formulate …
Summary of ASME BPVC Section VIII Div 1 (Part 1) Read More »
