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  • Welded Tube – Magnetic Analysis Corporation

    WELDED TUBE. There are many welding processes and many tubing configurations and sizes. MAC has extensive experience testing tubes and pipes and we have a large base of testing equipment lines being used to meet the many different ASTM, API, EN, ISO and other industry quality standards and or customer driven quality requirements. The Eddy ...

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  • WELDS- STATIC AND FATIGUE STRENGTH – II - steel

    2018-4-12u2002·u2002In the previous chapter, a detailed account of various welding processes, types of welds, advantages of welded connections etc. were presented. It was seen that welded connections are continuous and more rigid when compared to bolted connections. It was also pointed out that fillet welds and butt welds constitute respectively 80% and 15% of

    Get Price
  • HYDRO TUBE : Tube Welding Services

    2021-6-16u2002·u2002Hydro Tube has Certified welders for Sanitary Welding and custom welded fabrications. Multi-position welding, rotary welding, and advanced Orbital welding offer a full range of welding options. Hydro Tube also offers Robotic welding. The Robotic Weld Cells are multi-axis, allowing for great variation in products to be welded.

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  • Welded Stainless Steel Tubing ... - Plymouth Tube

    Plymouth Tube's facility in West Monroe, Louisiana, is committed to providing products and services that meet or exceed customers' expectations. Rolled formed stainless steel tubing from strip steel is welded to produce as-welded tubes, as-welded bead conditioned tubes and tube rounds for cold drawing.

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  • 2. Design of Welded Connections - American Welding

    2017-6-27u2002·u2002fective weld size for flare groove welds when filled flush to the surface of a round bar, a 90° bend in a formed sec-tion, or a rectangular tube shall be as shown in Table 2.1, except as permitted by 4.10.5. 2.3.4 Complete Joint Penetration Groove Welds 2.3.4.1 Weld Size. The weld size of a complete joint

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  • Fatigue Performance of High-Strength Pipeline Steels

    2015-10-1u2002·u2002steel weld performance in high-pressure hydrogen gas by completing triplicate HA-FCG measurements in multiple high-strength alternate-consumable arc welds at constant hydrogen pressure, load-cycle frequency, and R-ratio = 0.5. (SNL/ORNL) • Assess viability of lower-cost joining process for high-strength steels by completing triplicate . 1

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  • Welding of Large Diameter Pipelines: Design, Processes ...

    2018-5-10u2002·u2002• Weld After Backfill is a sequence used to improve overall installation rate for steel pipe. • Pipe is laid and welded outside (if required). • Joint coating is applied, usually a shrink sleeve or mortar diaper. • Pipe is backfilled. • The inside weld is made later.

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  • Sanitary Weld Review & Acceptability

    2020-2-11u2002·u2002•AWS D18.1 Welding of Austenitic Stainless Steel Tube and Pipe Systems in Sanitary (Hygienic) Applications •AWS D18.2 Guide to Weld Discoloration Levels on Inside of Austenitic Stainless Steel Tube •AWS D18.3 Welding of Tanks, Vessels, and Other Equipment in Sanitary (Hygienic) Applications

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  • Effect of welding residual stress on the performance of ...

    2021-9-1u2002·u2002The welding induces residual stress in the distorted metal base due to the rapid heating and cooling process. Basically, the residual stresses are found to harm the structural integrity and lay a detrimental effect on the fracture and fatigue performance [], especially for offshore platforms and coastal structures under complicated ocean actions such as wind loads, wave loads and …

    Get Price
  • Welded Tube – Magnetic Analysis Corporation

    WELDED TUBE. There are many welding processes and many tubing configurations and sizes. MAC has extensive experience testing tubes and pipes and we have a large base of testing equipment lines being used to meet the many different ASTM, API, EN, ISO and other industry quality standards and or customer driven quality requirements. The Eddy ...

    Get Price
  • WELDS- STATIC AND FATIGUE STRENGTH – II - steel

    2018-4-12u2002·u2002In the previous chapter, a detailed account of various welding processes, types of welds, advantages of welded connections etc. were presented. It was seen that welded connections are continuous and more rigid when compared to bolted connections. It was also pointed out that fillet welds and butt welds constitute respectively 80% and 15% of

    Get Price
  • HYDRO TUBE : Tube Welding Services

    2021-6-16u2002·u2002Hydro Tube has Certified welders for Sanitary Welding and custom welded fabrications. Multi-position welding, rotary welding, and advanced Orbital welding offer a full range of welding options. Hydro Tube also offers Robotic welding. The Robotic Weld Cells are multi-axis, allowing for great variation in products to be welded.

    Get Price
  • Welded Stainless Steel Tubing ... - Plymouth Tube

    Plymouth Tube's facility in West Monroe, Louisiana, is committed to providing products and services that meet or exceed customers' expectations. Rolled formed stainless steel tubing from strip steel is welded to produce as-welded tubes, as-welded bead conditioned tubes and tube rounds for cold drawing.

    Get Price
  • 2. Design of Welded Connections - American Welding

    2017-6-27u2002·u2002fective weld size for flare groove welds when filled flush to the surface of a round bar, a 90° bend in a formed sec-tion, or a rectangular tube shall be as shown in Table 2.1, except as permitted by 4.10.5. 2.3.4 Complete Joint Penetration Groove Welds 2.3.4.1 Weld Size. The weld size of a complete joint

    Get Price
  • Fatigue Performance of High-Strength Pipeline Steels

    2015-10-1u2002·u2002steel weld performance in high-pressure hydrogen gas by completing triplicate HA-FCG measurements in multiple high-strength alternate-consumable arc welds at constant hydrogen pressure, load-cycle frequency, and R-ratio = 0.5. (SNL/ORNL) • Assess viability of lower-cost joining process for high-strength steels by completing triplicate . 1

    Get Price
  • Welding of Large Diameter Pipelines: Design, Processes ...

    2018-5-10u2002·u2002• Weld After Backfill is a sequence used to improve overall installation rate for steel pipe. • Pipe is laid and welded outside (if required). • Joint coating is applied, usually a shrink sleeve or mortar diaper. • Pipe is backfilled. • The inside weld is made later.

    Get Price
  • Sanitary Weld Review & Acceptability

    2020-2-11u2002·u2002•AWS D18.1 Welding of Austenitic Stainless Steel Tube and Pipe Systems in Sanitary (Hygienic) Applications •AWS D18.2 Guide to Weld Discoloration Levels on Inside of Austenitic Stainless Steel Tube •AWS D18.3 Welding of Tanks, Vessels, and Other Equipment in Sanitary (Hygienic) Applications

    Get Price
  • Effect of welding residual stress on the performance of ...

    2021-9-1u2002·u2002The welding induces residual stress in the distorted metal base due to the rapid heating and cooling process. Basically, the residual stresses are found to harm the structural integrity and lay a detrimental effect on the fracture and fatigue performance [], especially for offshore platforms and coastal structures under complicated ocean actions such as wind loads, wave loads and …

    Get Price
  • Microstructure and fatigue performance of single and ...

    2012-9-15u2002·u2002The aim of this study was to identify the effect of fiber laser welding (FLW) on the microstructure, hardness, tensile properties and fatigue performance of high-strength (UTS ≥ 980 MPa) DP980 dual-phase steel with single linear and multiple linear joint geometry.While FLWed joints showed tempered martensite at the outer heat-affected zone (HAZ) which caused softening in the welds…

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  • Validated prediction of weld residual stresses in ...

    2019-5-1u2002·u2002First, a welded pipe assembly was fabricated from Esshete 1250, an austenitic stainless steel with added vanadium and niobium to increase its high-temperature strength. The layout of the completed welded pipe assembly, consisting of 4 full-length (200 mm long) and 2 half-length (100 mm long) pipes and five welds, is shown in Fig. 1.

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  • Key Considerations for Tube-End Joint Design

    2021-3-2u2002·u2002Manual welding of stainless-steel tube-ends enables better control of the weld pool. ... These welds are larger than seal welds and usually require multiple weld passes. For the most critical applications, the tube ends can be strength welded and expanded to provide the most leak protection. ... Strength Welded and Expanded: Most reliable type ...

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  • Predicting Maximum HAZ Hardness in Multiple Pass Welds

    Determination of reheated HAZ hardness. After a second or subsequent pass, the following method, put forward by Okumura et al [11], to estimate the maximum HAZ hardness, was applied: HV = HV weld - ΔHV. Where HV weld is the as-welded maximum hardness and ΔHV is the change in hardness as a result of subsequent heat treatments.

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  • Welding of Stainless Steel and Other Joining Methods

    performance in even the most aggressive environments, and they are fabricated by methods common to most manufacturers. In the fabrication of stainless steel products, components, or equipment, manufacturers employ welding as the principal joining method. Stainless steels are …

    Get Price
  • Modeling of resistance spot welds - Process and

    The identification of welded tubes properties considering the weld bead and Heat Affected Zone (HAZ) is important for reliable and accurate finite element simulation of tubular plastic forming ...

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  • Optimizing and economizing orbital welding for pipe

    2020-7-14u2002·u2002Orbital welding has been around for about 60 years, adding automated functionality to the gas tungsten arc welding process. It's a reliable, pragmatic approach to performing multiple welds, though some original equipment manufacturers and fabricators have yet to use the power of orbital welding machines, relying on manual welding or other tactics for the joining of metal tube and pipe.

    Get Price
  • Weld Joint NDT: Best Practices for Butt Weld Inspections ...

    Weld Joint NDT: Best Practices for Butt Weld Inspections. Butt weld inspections call for a specific set of NDT procedures in order to ensure a complete assessment of flaws. In addition to warping and distortion, these kinds of joint welds can be susceptible to cracking or corrosion and can degrade the overall integrity of the asset.

    Get Price
  • Fillet and Groove Welds in Structural Steel Field Welding ...

    2020-4-2u2002·u2002Groove weld vs. fillet weld. In steel erection, completing high-quality welds with as little rework as possible is a critical part of maximizing productivity, along with keeping projects on schedule and within budget.. On structural jobsites, though fillet and groove welds are both used, fillet welds are the most common. The strength required for the application typically determines when a ...

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  • Fatigue design rules for welded structures (January 2000 ...

    This paper outlines the basis of current fatigue design rules for welded structures. Covers how they are applied in different specifications, including consideration of residual stresses, size effect, material, welding process and environment. Areas needing further research are highlighted. Hot spot stress approach to keep pace with the increasing use of FEA is discussed.

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  • THROUGH WELD INSPECTION OF WROUGHT STAINLESS

    2004-11-5u2002·u2002far- side inspections. Pipe specimen 3C-022 is made of schedule 80 ASTM 358 Grade 304 wrought stainless steel, and consists of three 610mm diameter pipe sections joined by three welds: 1) horizontally-positioned air-back weld, 2) vertically-positioned air-back weld, and 3) horizontally-positioned water-back weld. A 360°,

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  • Welded Steel Pipe - Steel Tank

    2010-10-7u2002·u2002Welded Steel Pipe During the 20th Century, advancements were made in steel pipe — in the economy of production and the quality of the product. Noteworthy are the machines and technology for cold-forming of flexible pipe from coils of sheet steel with automated spiral welds. Great strides were made in quality control, testing, joints and ...

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  • WELDING COLD-FORMED STEEL - MemberClicks

    2014-6-30u2002·u2002in general agreement with the Structural Welding Code – Sheet Steel (AWS D1.3). The paramount difference be-tween the strength of a welded connection in cold-formed steel and a welded connection in hot-rolled steel is the dominance of sheet tearing as a possible failure mode. Although the design provisions provide guidance on de-

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  • Optimizing and economizing orbital welding for pipe

    2020-7-14u2002·u2002Orbital welding has been around for about 60 years, adding automated functionality to the gas tungsten arc welding process. It's a reliable, pragmatic approach to performing multiple welds, though some original equipment manufacturers and fabricators have yet to use the power of orbital welding machines, relying on manual welding or other tactics for the joining of metal tube and pipe.

    Get Price
  • Hygienic Welding: How Do You Know When It's Right?

    2020-2-11u2002·u2002Welder/Welding Operator Performance •Guidance for judging root welds of tubes from OD appearance •Weld visual acceptance criteria •Illustration of weld discoloration levels. AWS D18.1 Table of Contents Specification for Welding of Austenitic Stainless Steel Tube and Pipe Systems in Sanitary (Hygienic) Applications ...

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  • Welding In, On and Around Steel Joists

    2021-6-2u2002·u2002Background: Open Web Steel Joist Welding • SJI member companies produce an estimated 900 million welds per year on steel joists and Joist Girders • Huge number of welds produced in high speed production environment • Very repetitive welds of similar size and type for a given production line

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  • Weld Joint NDT: Best Practices for Butt Weld Inspections ...

    Weld Joint NDT: Best Practices for Butt Weld Inspections. Butt weld inspections call for a specific set of NDT procedures in order to ensure a complete assessment of flaws. In addition to warping and distortion, these kinds of joint welds can be susceptible to cracking or corrosion and can degrade the overall integrity of the asset.

    Get Price
  • Validated prediction of weld residual stresses in ...

    2020-5-22u2002·u2002structures such as dissimilar metal welded nozzles and pipe butt welds. A number of thick-walled austenitic steel pipe girth weld mock-ups have been manufactured by British Energy (now EDF Energy) for an internal research programme, and then utilized by the STYLE Framework 7 project [26]. They include both five short pipes with plain

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  • THROUGH WELD INSPECTION OF WROUGHT STAINLESS

    2004-11-5u2002·u2002far- side inspections. Pipe specimen 3C-022 is made of schedule 80 ASTM 358 Grade 304 wrought stainless steel, and consists of three 610mm diameter pipe sections joined by three welds: 1) horizontally-positioned air-back weld, 2) vertically-positioned air-back weld, and 3) horizontally-positioned water-back weld. A 360°,

    Get Price
  • Fillet and Groove Welds in Structural Steel Field Welding ...

    2020-4-2u2002·u2002Groove weld vs. fillet weld. In steel erection, completing high-quality welds with as little rework as possible is a critical part of maximizing productivity, along with keeping projects on schedule and within budget.. On structural jobsites, though fillet and groove welds are both used, fillet welds are the most common. The strength required for the application typically determines when a ...

    Get Price
  • What is Welding? - Definition, Processes and Types of Welds

    Welding is a fabrication process whereby two or more parts are fused together by means of heat, pressure or both forming a join as the parts cool. Welding is usually used on metals and thermoplastics but can also be used on wood. The completed welded joint may be referred to as a weldment. Some materials require the use of specific processes ...

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  • High Frequency Induction Welded Pipe, HFI pipe - Sunny

    The high-frequency induction (HFI) resistance pressure welding technique for longitudinal welding. The endless strip passes through rolling stands where it is shaped to an open pipe, which runs through a high-frequency inductor consisting of a metal coil with single or multiple windings.

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  • Structural Steel Connections, Joints Details

    2012-7-20u2002·u2002• 6520 ‐AWS D1.1 Structural Welding Code Tests 6600 • 6610‐Steel Construction BMA Engineering, Inc. – 6000 1 • 6620/6630 ‐NUREG‐0800 RG 1.94 6300. Design ‐ 6320. Structural Steel Connections, Joints and Details • General Provisions (Section NJ1) • Types of Structural Welds …

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  • Welding of Stainless Steel and Other Joining Methods

    performance in even the most aggressive environments, and they are fabricated by methods common to most manufacturers. In the fabrication of stainless steel products, components, or equipment, manufacturers employ welding as the principal joining method. Stainless steels are …

    Get Price
  • The difference between spiral welded ... - World Steel Tube

    2012-5-7u2002·u2002Spiral welded pipe regular weld evenly distributed, as opposed to straight seam welded pipe World Steel Pipe News, spiral steel pipe very good nozzle ellipticity and face perpendicularity, to ensure the group field pipe welding group on accuracy. spiral welded pipe manufacturer should be held by industrial production permit issued by the state.

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  • Fatigue Strength of Steel Members with Welded Details

    2016-11-7u2002·u2002welded steel beam with or without welded attachments. This fact has been demonstrated through additional exxad perimental results from 157 beams and girders, as well as from analytical studies utilizing the concepts of fracture mechanics and fatigue crack growth.^ The fatigue strength of beams with partial length cover plates was found to be

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  • Hydrogen-assisted fracture resistance of pipeline welds in ...

    2021-2-1u2002·u2002The objective of this work was twofold: (1) measure reliable fatigue crack growth relationships for X65 steel and its girth weld in high-pressure hydrogen gas to enable structural integrity assessments of hydrogen pipelines, and (2) evaluate the hydrogen accelerated fatigue crack growth susceptibility of the weld fusion zone and heat-affected zone relative to the base metal.

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  • Fatigue Performance of Butt Welds in Titanium - TWI

    Fatigue design guidance is readily available for welded joints in steel structures and aluminium alloy structures in the form of stress-life (S-N) curves for typical structural joints between plates. Typical 'rule of thumb' guidance for alloys other than steel, requires the allowable stresses for steel joints to be factored by the ratio of the ...

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  • The difference between hot-finished and cold-formed ...

    2018-10-2u2002·u2002Therefore, hot-finished tubes are superior to cold-formed ones, as they offer uniform and stress free performance, consistent and reliable mechanical properties and improved service life. The enhanced ductility of hot-finished tubes also means that they can be shaped or readily manipulated, without the risk of cracking, thereby providing ...

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  • Effect of Multiple Pulse Resistance Spot Welding Schedules ...

    This study examines the impact of multiple pulse welding schedules on LME severity in welds of TRIP1100. Two different types of pulsing methodologies have been proposed to reduce LME severity: applying a pre-pulse before the welding current to remove the zinc coating and pulsing during the welding current to manage heat generation.

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  • Weld repair of leaking high pressure exchanger tube

    2010-4-1u2002·u2002Second before attempting repair welding on the tube leaking, ensure that the near by tubes had not developed signs of leaks. Take the nearest four tubes around the leaky tubes for plugging as a precautionary measure. Before plugging these nearest four or six tubes around the leaky tube to be repair welded (both by internal plug + strength weld ...

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  • Residual stresses in multi-pass butt-welded ferritic ...

    2015-2-17u2002·u2002This study is dedicated to the investigation of the residual stress development in multi-pass butt-welded joints of ferritic-pearlitic steel pipes. Therefore, temperature profiles are taken during welding, and the residual stresses are determined by X-ray diffraction measurements on the outer and inner surfaces of the pipes. The distortion of the specimens is measured by laser triangulation ...

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  • EFW Steel Pipe, Electric Fusion Welded Pipe

    2014-4-28u2002·u2002EFW (Electric Fusion Welding) steel pipe refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt, the formation of the weld. EFW steel pipe is formed by rolling plate and welding the seam. The weld flash can be removed from the outside or inside surfaces ...

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  • Non Destructive Examination of PE Welds Emerging

    2021-5-9u2002·u2002assessing welds along with a dedication to ensuring the correct surface preparation and weld procedures are employed. Visual examination of welds is a particularly useful NDT technique in the context of PE welding as it yields a great deal of information about the weld preparation, potential

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  • Fatigue Strength of Steel Members with Welded Details

    2016-11-7u2002·u2002welded steel beam with or without welded attachments. This fact has been demonstrated through additional exxad perimental results from 157 beams and girders, as well as from analytical studies utilizing the concepts of fracture mechanics and fatigue crack growth.^ The fatigue strength of beams with partial length cover plates was found to be

    Get Price
  • New Approach to High Performance PO Coatings

    2018-8-28u2002·u2002Pipe Welded Area Cross Section of a Typical Weld on a Pipe ... • No Tenting along the edges of welds New Approach to Multi - Layer Polyolefin Coatings New Approach to Multi - Layer Polyolefin Coatings. The GLOBAL LEADER in Pipe Coating Solutions ... Side-Wrapped GSPE on Spiral Weld Pipe (30') Coating EffectivenessCoating Effectiveness.

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  • The 8 Strongest Types of Welds & 9 Types of Welding You ...

    What Is the Strongest Weld? What is the strongest weld? The absolute strongest weld that can be made in routine applications would be a type of weld made via the welding technique of Tungsten Inert Gas (TIG) Welding, also known as GTAW welding.TIG welders are known for creating clean and strong welds.. Part of the reason why weld types made by the TIG welder are strong is the high deposition ...

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  • How to grind, blend and finish a weld seam

    2019-3-19u2002·u2002Stainless steel has a multitude of commercial applications and the weld finish selected is also intrinsically linked to this application. For instance, a highly refined finish (which this article will help you achieve) may be used for its aesthetics, whereas an elevator wall panel or hand rail must have a No.4 finish to disguise the visibility ...

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  • Welding Quality Assurance & Quality Control Processes ...

    2019-12-16u2002·u2002Quality Assurance Quality Assurance (QA) is a set of defined processes for systematic monitoring and evaluation to assure product quality. Quality Control Quality Control (QC) is the process of confirming that the product meets the specifications. It includes the checking and testing of manufacturing procedures as well as the final products. The results from these […]

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  • Federal & State Code Requirements Pipe Joining-Welding

    2014-10-8u2002·u2002•Subpart E – Welding of Steel in Pipelines •192.225 Welding Procedures •192.227 Qualification of Welders •192.229 Limitations of Welders •192.233 Miter Joints •192.235 Preparation for Welding •192.241 Inspection and test of Welds •192.243 Nondestructive Testing •192.245 Repair or Removal of Defects

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  • Why weld joints are stronger than the base material itself ...

    2019-7-2u2002·u20021,826. A typical fillet weld on thin wall tubing will have cross sectional area much larger than the tube wall thickness. The weld material can have lower yield strength than the tubing, but be stronger because of the larger area. I once welded up a recumbent bicycle frame from 4130 tube. I used a torch and coat hangers for filler.

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