For proper installation of the plumbing system in a building, various types of joints are used, which are shown in Fig. 5.1. As already mentioned, various types of fittings like elbow, gasket, union, etc., are used for making joints. It helps in changing the direction of water supply from main pipes to subsidiary pipes. Introduction to Destructive Weld Testing ESAB Knowledge Various types of bend tests are used to evaluate the ductility and soundness of welded joints. Guided bend tests are usually taken transverse to the weld axis and may be bent in plunger-type test machines or in wraparound bend test jigs.
Weld neck flange is the most widely used type in process piping. It gives the highest level of joint integrity due to Butt-welded with a pipe. These types of flanges are used in high pressure and temperature application. Weld neck flanges are Bulky & costly with respect to other types of the flange. Physical Weld Testing:Destructive & Nondestructive - Weld Dec 12, 2019 · A hardness test is used to determine the hardness of weld metal. By careful testing of a welded joint, the hard areas can be isolated and the extent of the effect of the welding heat on the properties of the base metal determined. Hardness Testing Equipment. File Test:The simplest method for determining comparative hardness is the file test. Structural Steel Connections, Joints DetailsFillet Weld The design and analysis of fillet welds is based on the assumption that the geometry of the weld is a 45degree right triangle St d dStandard weld sizes are eed in sit thixteenths of an ihinch. Failure of fillet welds is assumed to occur in shear on the throat.
Sep 20, 2017 · The key types of flanges are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind flanges. In addition to these standard flanges, some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange, expander/reducer flange, and orifice flanges. Types of Flanges used in the Oil & Gas Industry -Weld Neck, Blind, Slip-on, Socket Weld, Types of Pipe Joints in Plumbing System for Pipes Connection5. Socket Welded Joint in Pipe. Socket welded joints are used wherever there is a high chance of leakage in joints. Pipes are connected as putting one into other as shown below and welded around the joint. Pipes having different diameters are suitable for this type of joint. Types of Welding Joints - The 5 Different Types Of Welding Incomplete Penetration Weld Lap Welding Joint. Lap welding joints are used most often to joint two pieces with differing thicknesses together. Also considered a fillet type, the weld can be made on one or both sides. A Lap Joint is formed when 2 pieces are placed in an over lapping pattern on top of each other. Fillet Welding Joint
It involves welding on the top side of the joint. In this position, the molten metal is drawn downward into the joint. The result is a faster and easier weld. In 1G and 1F, the number 1 refers to the flat position, while the letter G stands for a groove weld and letter F stands for a fillet weld Types of Welds - Butt joint - Fillet welds - Bevel-groove Figure 2:Types of welds that may be made with a basic butt joint. Figure 3:Types of welds that may be made with a basic T-joint. Figure 4 Types of welds that may be made with a basic lap joint. Lap joint, Figure 4. Fillet weld. Plug weld. Slot weld. Spot weld. Bevel-groove weld. J-groove weld. Flare-bevel-groove Weld Design and SpecificationFactors for Fatigue Stress Analysis Type of Weld Stress Increase Butt Weld 1.2 Transverse Fillet 1.5 Parallel Fillet 2.7 T-butt with corners 2.0. 8 Strength Considerations ITry to minimize the stresses in welds; make the parent materials carry highest stresses. IButt welds are the most efficient
K. Ohi, X.G. Lin, in Stability and Ductility of Steel Structures (SDSS'97), 1998. 1 INTRODUCTION. Welded connections are widely used in beam-to-column connection of steel frame as rigid connections. But some diaphragms should be welded to the joints to obtain sufficient rigidity and strength, and it is observed in the recent earthquake damage, that the strain concentration in the vicinity of Welding Defects:Types, Causes, and Remedies (With PDF)Welding defects are generated in a welding job due to the faulty or poor technique used by the inexperienced or unskilled welder or due to fundamental difficulties in the welding operation. An ideal weld or good weld should be such that adequate fusion exists between the filler metal and edge preparation together with good penetration. Welding Intro to Welding - University of Floridaare applied, and in the type of equipment used. There are currently over 50 different types of welding processes; well focus on 3 examples of electric arc welding, which is the most common form of welding. The most popular processes are shielded metal arc welding (SMAW), gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW).