ua 41 weld test specifications ua 41 weld test specifications
The partnerships have resulted in welding testing and training programs specific to the requirements Kiewit uses for power plant projects. 0000078901 00000 n Can mild steel be welded to stainless steel? You dont want to weld a good root pass only to screw it up with the hot pass. 0000081388 00000 n There are many different types of destructive testing, but some of the most common are fracture mechanics testing, impact testing, and hardness testing. Standard welding procedure specifications are developed by the AWS B2D Subcommittee on Standard Welding Procedure Specifications based on procedure qualification records (PQRs) donated to the AWS B2G Subcommittee on Procedure Qualification Records from many areas of industry. 0000081072 00000 n Basis for Establishing a Standard Welding Procedure Specification (SWPSs). Both 6G UA 21 is a carbon steel 2" schedule 40 open root 6010 and 7018 fill. VerticalScope Inc. All Rights Reserved. some wrist movement is required to make the action work.For 2 inch pipe, you can walk the cup. SWPS B2.1-22-015 is the Standard Welding Procedure Specification (SWPS) for Gas Tungsten Arc Welding of Aluminum (M/P-22 to M/P-22), 18 through 10 Gauge, ER4043 or R4043, in the As-Welded Condition, with or without Backing. In other words, a welder can be qualified to weld both carbon and stainless steels using one test.That is why the UA-41 test is a frequent test used for the gatekeeper test to get a pipe welding job.Passing the UA41 or any other 6g weld test all starts with metal preparation.The bevel needs to be accurate at 37.5% plus or minus 2.5% that is very important because If the bevel is too steep, the root will not go in well. The breaking strength is measured in pounds per square inch (psi) or megapascals (MPa) or N/mm2. 0000002927 00000 n 0000081679 00000 n 0000079947 00000 n This procedure isnt suited for structural applications because it is designed for thin sheet metal, approximately 1 to 2 mm thickness, in lower strength alloys such as 3004 and 5052. outside diameter and also used an abrasive cartridge for the inside In through-transmission testing, a probe is inserted into the material and ultrasound is transmitted through it. We strive to provide most accurate and practical knowledge in welding, metallurgy, NDT and Engineering domains. Bridge tacks A bridge tack is a tack weld that bridges the bevels without penetrating the root. The base metal, weld metal, and welding parameters must be strict as prescribed in the welding procedure being qualified. It then shows you h. 0000082248 00000 n There are many different types of weld tests, each with its own objective & testing requirements. plates "T" Weld: 5/16 in. The following edition, renamed B2.1:1998, Specification for Welding Procedure and Performance Qualification, was an extensive revision of B2.1-84. your Facebook account, or anywhere that someone would find this page valuable. Weld testing is a way to evaluate the quality of a weld and identify any defects that may exist. 0000080454 00000 n F (10 deg. 0000080914 00000 n These SWPSs can often be acquired from AWS at a fraction of the cost that would be incurred for qualification of a PQR through welding and testing. Standard Welding Procedure Specifications (SWPS), Comparison of Commercially Available Welding Consumables. Post photos, respond to polls and access other special features, (Non-Welding) Forum Support & Suggestions, Links to How-To, Job Opportunities, Education and other resources, HTP America - USA Weld by Zod Engineering. The document explains the concept of a bend test for welds and what factors, beside poor weld quality, can cause test specimen to fail Need Information on Welding Dissimilar Metals in Heating and AC Piping Systems? There are several different forms of RW (e.g., spot, seam, projection, single-sided, bonding, cross wire, micro, flash, and upset welding) that differ primarily by the types and shapes of weld electrodes used to apply the pressure and conduct the current. There are two main types of ultrasonic testing: In pulse-echo testing, a burst of sound waves is sent into the material, and the reflected waves are detected by a receiver. 0000079298 00000 n Participate in over a dozen different forum sections and search/browse from nearly a million posts. A welding test is essential for ensuring the quality of welds and preventing accidents. This ensures that a tough weld is achieved, even if the actual . Take your time and get it fit up with zero mismatch aka "high-low".Use spacers or a welding rod to achieve a 1/8" (3.2mm) gap ..make sure both ends of pipe are taped along with the joint itself taped shut, and purge gas is on and flowing at around 15 cfh and wait for about a minute before welding the first tack weld. i switched to 1/8 wire for hot pass and kept out of the middle!move quickly from edge to edge & be sure to use 1/8 wire or you will get suckback! 2" XXS.436" ER90S-B9 / E9018-B9 9% Chrome Test UA-101 GMAW & FCAW 6" XXS.864" ER70S-6 / E71T-1: Flip-Flop Test (2G & 5G) Weld Test Process: Pipe Coupon Size Filler Metals . startxref The distance between the gauge lines should be 3 mm less than the width of the weld. C) Infrastructure/Construction/Repair or Maintenance/Field Work The Committee has published numerous . Any discontinuities in the weldment will allow the penetrant to seep through and be drawn out by the developer, causing a visible indication on the surface of the weldment. 309 welding rods are also used in the field to weld carbon steel pipe to stainless pipe. The standard gives the requirements for guided bend test specimen preparation, test parameters and testing proce-dures, but does not specify the requirements or accep-tance criteria. in the Welding Procedure Specification. Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds, Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding, Mig and Flux Core - gas metal arc welding & flux cored arc welding, Stick Welding/Arc Welding - Shielded Metal Arc Welding, Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds, Welding Projects - Welding project Ideas - Welding project plans, Welding Jobs - Industrial Welding Jobs - Pipe Welding Jobs - Tig Welding Jobs, Classifieds - Buy, Sell, Trade Used Welding Equipment, instructions how to enable JavaScript in your web browser. Welders use MPT to inspect welds for defects before releasing them for use. bend test, corrosion test, hardness test, or RT) to verify and ensure the weld integrity. The impact load is applied by dropping weight. Welding everything from the crack of dawn to a broken heart. C) **Position for side 1: 2F - Plates and axis of weld horizontal. In initiating SWPSs for consideration as AWS standards, the B2G Subcommittee is guided by the successful service experience in welded construction of the combination of base materials, welding process(es), and welding filler metals covered by the scope of each SWPS. I bought these pipe test coupons from triangle engineering and they come pretty much ready to weld with some deoxy aluminite rust inhibitor on them. Not sure what it is with the AWS. 0000079460 00000 n In order to ensure that the welded joint has the same strength as the base metal, a tensile test must be performed on the welded joint. The energy required to make the fracture is called the Charpy V-notch toughness or energy. Welding codes provide for a broad qualification by passing this one single 6g weld test. But only one is for aluminum. Z - Identifies a Variation on a Process - Please note that the Z values will be assigned in simple chronological sequence - identifying a variation of a process using the same base metals with no consistent meaning from procedure to procedure. Helmets, Weldmonger Brand Soft Durable Welding *4 ), 2) SMAW using other than F-3 Electrodes (E7018, E308-16, etc. Y is the Welding Process Number Based on the Table below: 1) SMAW using F-3 Electrodes (E6010, E7010-A1, E6011, etc. cAK{w-l2{A]tJ"zd. The course will cover welding techniques specific to the pipeline industry. What is the purpose of the back purge gas for stainless steel welding? The time between the sending of the burst and the reception of the reflected waves can be used to calculate the distance to the discontinuity. So I like to use a technique that works well in most all situations.I use the term "Keyhole" a lot in this video. AWS Publications produces the award-winning Welding Journal, Inspection Trends, SPRAYTIME, Welding Marketplace, and Welding Journal en Espaol. 0000081778 00000 n All of these methods have their own advantages and disadvantages. XL model, Home | Contact | About Me | Privacy Policy |Site Map|Forum |Store, Copyright 2007-2023 WeldingTipsandTricks.com. does not touch the plate surface. The fractured surfaces are examined for internal defects such as porosity, incomplete root penetration, and slag inclusions. Can a Stainless wire(er309L) be used to weld mild steel plates? 0 0000000016 00000 n xeq&v_OQB. oh by the way, the ua 21 test is on sched 120,not 40! Im gonna need more practice for that one. pliers, more, The Real and OriginalTIG Finger and Defects that are found can be repaired before the welding process is finished or the part is put into service. 399 0 obj <> endobj if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'materialwelding_com-box-4','ezslot_11',603,'0','0'])};__ez_fad_position('div-gpt-ad-materialwelding_com-box-4-0'); Some common weld tests include Bend tests, tensile tests, visual inspection, penetrant testing, and radiography testing. There are nearly 30 methods of Hardness Testing or Hardness Measurement, but the most widely used are: This test is designed to measure fracture initiation characteristics of structural materials heavier than 18 mm. Welding on metal that is wet is strictly prohibited; wet metal shall be heated until it is at least warm to the touch to assure removal of moisture. If there are any flaws in the metal, they will disrupt the flow of these eddy currents and this will be detectable by changes in the magnetic field. MaterialWelding.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 0000082654 00000 n NM5M*yDBVI>I/tY>[rqz~At[3bj+G;z| ]a$|S c ] K5:G0[2_?ontp l$bffj'4DYN The notch dimensions are shown in Fig. An SWPS must meet the rules for qualification of AWS B2.1, Specification for Welding Procedure and Performance Qualification, and be approved by the AWS B2 Committee on Procedure and Performance Qualification. The B2G Subcommittee reviews and validates these PQRs before entering the information contained on them into a data bank. pliers, more, The Real and OriginalTIG Finger and Standard Welding Procedures, No Qualification Testing Required, AWS Publications | UA-70 SMAW 2" pipe & 3/16" plate .154" E7018 Structural Steel Fillet Weld Test UA-71 GMAW-S & GMAW 6" Sch. The UA 101 and UA 102 Kiewit-specific weld tests help get . they are made with the intention of grinding out when you get there.bridge tacks are not allowed on most pipe welding tests so that is why I showed normal tack welds.Dont forget that as you close up the root, pressure will build inside the pipe. It is the policy of the AWS B2 Committee that the range of conditions and variables listed for an SWPS be more restrictive than permitted by application of the full range of conditions and variables allowed by the B2.1 document or by other American National Standards (such as AWS D1.1 through AWS D1.6 or ASME Boiler and Pressure Vessel Code, Section IX). The reflected ultrasound is then detected by another probe on the other side of the material. |. There are several types of destructive tests, including: All these destructive tests are used to evaluate the strength and reliability of welds by subjecting them to weld testing. 0000082799 00000 n This video shows you how to first perform a visual examination on a groove weld according to the AWS D1.1 Structural Steel welding code. UA 400 Members: Join Our E-Mail List Contact Info UA 400 Physical Location: 2700 Northridge Dr Mail: PO Box 530 Kaukauna, WI 54130-0530 (920) 462-0400 0000080720 00000 n 403 0 obj<>stream Visual testing is typically performed by a welder who is qualified to inspect welds. GTAW of Nickel Alloy (800&800HT) using ERNiCr-3 followed by SMAW using ENiCrFe-2, GTAW of P-51 Titanium using ERTi-2 filler metal, Torch Brazing of Cu Alloys 102, 120, 122, 142, 192 using BCuP-3 through 7 filler metal, Torch Brazing of Cu Alloy 107 using BAg-7 filler metal with AWS 3A Type flux, Torch Brazing of Cu Alloy 107 to P/S No. 0000002181 00000 n )`514E_0FsDFFn;"2_~=ov{;/or8W?._}v_@~_~H?|O|9^_~~_~=~OG|_^_|~=~p_?_}~~%|=e_B[?~5|ON_7;x3}yO7oo EN!2u{U_*h!V3gF41gu +V{?cn? << /Length 5 0 R /Filter /FlateDecode >> A weld bead, 63.5 mm long and 12.5 mm wide, is deposited on the tension surface of the specimen using a special hard-facing electrode. This standard introduced the concept of the SWPSs in addition to a set of rules for qualifying welding procedures, welders, and welding operators. All current SWPSs are available in the AWS Bookstore. The length is not mandatory. NDT allows products and components to be inspected without causing damage, which means they can be reused or recycled. your Facebook account, or anywhere that someone would find this page valuable. 1. For example, radiography can detect very small defects, but it can be expensive and time-consuming. Some common weld tests include Visual Inspection, Bend Testing, tension test, visual inspection, and radiography testing. thats very critical! For everyone involved in any phase of welding steel structures---engineers, detailers, fabricators, erectors, inspectors, etc. Tig Welding Tips - UA41 6g Pipe Welding Test (re-uploaded) weldingtipsandtricks 1M subscribers Subscribe 4.7K Share 1M views 9 years ago To order a Tig Finger, go to. Visual Testing is a method of inspecting welds and weldments for defects. see more tig welding videos like this 6g weld test video. In many respects, the AWS B2.1 specification is like the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC), Section IX, as its intended for the qualification of welding procedures and welder performance. Solvent-based penetrants, however, are more aggressive and can cause damage to the weldment if not properly removed. It tends to resemble a keyhole of an old fashion door.The keyhole is key indicator of your amperage and if it gets too big, that means you need to turn the amperage down, feed more rod, feed rod more oftenetc.Cutting the tacks out is not always permitted by test inspectors so you should probably ask about that before you do it.and also, sometimes a grinder is not allowed after the tacks are feathered.again, these are things you want to ask about if you are in doubt.A 2 inch schedule 80 pipe has a fairly small inside diameter. NDT is another type of welding test method that is used to evaluate the soundness, integrity, and reliability of components. The most common application of MPT is in the welding industry. 0000082757 00000 n Pictures by Jodi Glass. By abrahamx Date 10-19-2010 15:07. and purging, Affordable High Quality Auto Dark So employers get a lot of bang for their buck with this welding test. Visual inspection is simply looking at the weld to see if it meets the requirements. To ensure that welds meet these requirements, they must be tested. Destructive testing is used to evaluate the strength, soundness and reliability of a welding joint. February 7, 2022 An eddy current test is a non-destructive test (NDT) that uses the principle of electromagnetism to detect flaws in metal objects. Non Destructive Testing (NDT) allows welders to detect these defects and fix them before they cause any problems. 0000082470 00000 n Radiographic testing, also known as RT or X-ray, is a common method of inspecting welds for defects. The term, hardness of a metal, cannot be precisely defined and has many meanings. The course will focus primarily on the 12" butt weld along with the 12" on 12" branch connection. Non-Destructive Testing, or NDT, is a process of inspecting and evaluating a weld without causing damage. Many originally qualified PQRs are typically used to create a single SWPS. B) Operations Management for the hot pass, and back to 3/32" filler rods for the cap. 0000082109 00000 n Impact testing is used to see how well a weld withstands impact loading. ), 5) GMAW-S (Short Circuiting Transfer Mode), 6) GMAW (Globular, Spray or Pulsed Transfer Mode), 7) FCAW (Fluxcored Wire Variation of GMAW). Our certification programs are overseen and validated by objective third parties. Its 2" sch 80 pipe in 6g position. They are for the international pipe welders and fitters union, the UA. 80 .432" ER70S-3 or 6 Short Arc Root / Spray or Pulse Fill B31.1, B31.9, etc. The Charpy impact test is used to determine the toughness of a welded joint and to compare the toughness of different welding processes. Tensile strength also increases with hardness. Also, all metal within about one inch of the weld joint should be cleaned to bright metal using a grinder, sanding disc, abrasive flap disc, flapper wheel, or carbide burr.Fit up is important. 0000002463 00000 n . For all committee generated PQRs, the welding, testing, and evaluation are performed under the direct supervision of the B2G Subcommittee. it a bit that way and doing that makes a nice uniform progression.You can do the same thing with a drinking glass on your dinner table.the Welding is the process of joining two or more pieces of metal by heating the pieces to their welding temperature and then bringing them into contact with each other. It is the intent of the AWS B2 Committee to have SWPSs only for commonly welded materials and common manual and semiautomatic welding processes. 0000078871 00000 n Two gauge lines are lightly marked on the specimen. The specimen is mounted on an anvil provided with a stop block. A machine design suggested by ASTM permits the use of various weights and various drop heights according to the strength level of the metal. Ultrasonic uses sound waves to detect discontinuities in the weld. Welder. AWS D14.4/D14.4M:2019 ii ISBN Print: 978-1-64322-064-2 ISBN PDF: 978-1-64322-065-9 . It is important that the line between the weld metal and the base metal is distinctly visible, and if necessary the surface of the specimen should be etched with a suitable reagent. AWS A5.10/A5.10M:2021 (ISO 18273:2015 MOD) viii AWS A5.10/A5.10M:2017 Welding ConsumablesWire Electrodes, Wires and Rods for Welding of (ISO 18273:2004 MOD) Aluminum and Aluminum-Alloys - Classification Comments and suggestions for the improvement of this standard are welcome. It is not necessary to remove the weld reinforcement. A) Welding/Fabrication Shop I appreciate all of the info that you guys have provided me. The tensile test can be performed in two ways for testing welds: The welding macro test is a test to measure the quality of weldment by observing its weld penetration, welding zone, HAZ & microstructure against the presence of welding discontinuities. The American Welding Society, acting under ANSI rules for consensus standards, publishes AWS Standard Welding Procedure Specifications (SWPSs) which are initiated by the B2G Subcommittee on Procedure Qualification Records. 13.35. The welded joint must have the same strength as the base metal. UA-91 WELD TEST SPECIFICATION Manual GTAW/SMAW Welding Processes MAXIMUM TIME PERMITTED FOR TEST IS 5 HOURS PIPE Coupon MATERIAL Specification of Base Metal (s): SA 106 Pipe Size: NPS 2, XXS Thickness: 0.436" wall JOINT CONFIGURATION = Single Vee Groove without backing or retainers = Bevel: 35 deg. Water-soluble penetrants are less aggressive than solvent-based penetrants and are less likely to cause damage to the weldment. They have been developed by members or through technical representatives of the members of NCPWB and the costs thereof have been defrayed through the dues and contributions of members of NCPWB. This should be supported by a destructive peel or push-off test to check that a piece of the material can be pulled from the sheet at each projection. 0000081226 00000 n Would you prefer to share this page with others by linking to it? B1. Dual and Single Flowmeters for welding I have been a combination welder for about 20 years, started working for the Navy. Usually the WPS for a pipe welding test like this will call for a 1/8" (3.2mm) gap plus or minus 1/32" (0.8mm) . The welding test will evaluate the welders skills and abilities. A young green pipe welder asked an old salt one dayHow can I make the weld on the bottom of the pipe look like the top.The old salt replied.Screw up the top Welding everything, from the crack of dawn to a broken heart. And some employers prefer that you are able to "walk the cup. 0000082950 00000 n The test is performed by etching and polishing the weldment to reveal its microstructure. UA-41 GTAW: 2" Sch. However, radiographic testing is expensive and time-consuming, so it is not always practical for use in every situation. Tacks welds are going to be pretty small and some test inspectors specify just how long they can be. The amount of force required to pull the welded joint apart is called the breaking strength or ultimate strength. %%EOF you roll it sideways a bit, and then you tilt it the other way and roll That is why the UA-41 test is a frequent test used for the gatekeeper test to get a pipe welding job. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, That is another reason for cutting them out and remelting them to avoid a funky looking area . Longitudinal Guided-Bend Test (See Part A1, section 7.6, Fillet Weld Root Bend Test.) 40 6" Sch. The manner of positioning the specimen and the direction of force is also shown in the above figure. Welders must be able to produce high-quality welds that meet the requirements specified by the customer or code (E.g., AWS D1.1/ ASME Section IX). In other words, a welder can be qualified to weld both carbon and stainless steels using one test. 0000081820 00000 n Thanks, and sorry for making that mistake. The Certified Welder (CW) program tests welders to procedures used in the structural steel, petroleum pipelines, sheet metal, and chemical refinery welding industries. I'm just starting out so (you're right) I haven't taken many test (only 40 or so all being hodgpog of root/face bends, side bends, macroetch, dye pen, and x-ray) SO FAR! 0000080411 00000 n 0000081346 00000 n The welding rod on the UA 41 is 309 and the pipe is regular steel. Radiography uses X-rays to image the weld and check for any defects. 203K views 3 years ago #welddotcom In todays video, we break down a very common test for students, as well as those in the welding industry, the AWS D1.1 Prequalified SMAW 3G weld. Weld Testing Methods: Non-Destructive and Destructive Techniques for Optimal Results. 1. UA 41 is carbon steel 2" schedule 80 open root TIG root pass and fill. force pound-force (lbf) newton (N) 4.5 kip (1000 lbf) newton 4450 linear dimension inch (in) millimeter (mm) 25.4 tensile strength pounds per square inch (psi) pascal (Pa) 6895 (psi) kilopascal (kPa) 6.89 (psi) megapascal (MPa) 0.00689 mass pound mass (avdp) kilogram 0.454 angle, plane degree (angular) () radian (rad) 0.0175 flow rate cubic feet A UA certification guarantees that you are a knowledgeable, productive and safe addition to any workforce. It is used to join two or more metal parts together. To complete this task, the B2 Committee needs as many aluminum PQRs as it can acquire from industry and is asking those who have any that they can donate to contact Jim Sekely, chair of AWS B2D, at jsekely@comcast.net. 0000082908 00000 n WPS 4:1-42-2 (said as: WPS four to one dash forty-two dash two) - This WPS is for welding Cr-Mo Steels from P-Number 4 to Carbon Steel from P-Number 1 using GTAW with Consumable Insert followed by SMAW using an electrode which is not F-3. 0000081030 00000 n As the world strives to become more environmentally friendly, Non-Destructive Testing (NDT) has become an increasingly important part of many industries. speaking of using a TIG finger, I asked for some feedback in the A destructive torque test is normally required to verify that a minimum specified torque can be achieved at the settings selected. 100% of the class will be held in the shop with all training being hands-on. 0000081923 00000 n The PQRs are deleted after validation). Limitations have to be placed on the hardness of the heat-affected zone and weld-metal, because if they are too hard, they will not have sufficient ductility for the service conditions and their corrosion resistance may also be impaired. The penetrant is forced into the weldment by capillary action and drawn out by the action of a developer. Of the 82 SWPSs available from AWS, only one is available for welding aluminum, and it is very limited in its application. A radiograph is a picture of the weld that is created by radiation passing through the weld and striking a film on the other side. ), that preheat shall be used for production welding. 0000002506 00000 n Its goal is to create procedures to support the more-common base metals in the 5xxx and 6xxx series alloy groups, welded primarily with the gas metal arc welding process, using both 4xxx and 5xxx series filler metals, and within a range of base metal thicknesses conducive to the most-common structural applications. Weld Test UA-1 UA-2 Process SMAW SMAW UA-3A GTAW & SMAW Pipe Coupon Size 6" Sch. 0000082612 00000 n Horizontal (2F) 0000082381 00000 n Gloves, TIG torch holders, magtabs, Mig SWPS B2.1-22-015 is the Standard Welding Procedure Specification (SWPS) for Gas Tungsten Arc Welding of Aluminum (M/P-22 to M/P-22), 18 through 10 Gauge, ER4043 or R4043, in the As-Welded Condition, with or without Backing. Are you a pipe liner? % are the same.I prepped the pipes using a flap disc for the 0000002845 00000 n F) Hobbyist. Both carbon steel pipe but the UA 41 is TIG and with 309 ss root and fill. 80.218" ER309 Stainless Test UA-50 Brazing: 3/4" Tube.045" BCuP 2 thru 7 Manual Torch Brazing UA-60 SMAW: 2 3/4" O.D..625" E6010 / E7018 Uphill UA-63 . NDT involves inspecting components without damaging them. This specification establishes common acceptance criteria for classifying and applying carbon and low-alloy steel . Some of the most common techniques include: Welding is a process that can create some of the strongest bonds in metalworking. In judging the extent of such restriction, the Committee is guided by the number and scope of the supporting PQRs, including the specific material, thickness and value for each welding variable used for the development of the PQR, and by known fabrication experience. Welders must be able to produce high-quality . What is Bend Test in welds, & Types of Bend Test. The relevant information is extracted from the PQRs, verified, incorporated into a data bank, and used to create an SWPS. NDT can also be used to inspect welds for quality control purposes. 80 .218" ER309 Requalification Test . 0000080580 00000 n The biggest goal of the hot pass is not to disturb the root pass at all. It will also help to ensure the safety of the welder and the people around him. 0000002727 00000 n This test is similar to the nick-break test and is meant to test the weld soundness. Thats why I recommend letting the pipe cool completely after the root pass is in.IF the root pass was heavy enough , the hot pass pretty much fills up the groove on these pipe couponsbut if you are still below flush more than 1/32" , you probably want to weld another fill pass before the cap. For most tig welding roots, I recommend what is called a feather edge which basically means a sharp edgeno land.There is no reason at all why you should have to deal with mismatch on a pipe test like this. Its very common practice to use carbon steel pipe along with 309 stainless rod for welding tests and in some instances, the welder can be qualified to weld both stainless and carbon steel with one test joint. 0000080763 00000 n Welding codes provide for a broad qualification by passing this one single 6g weld test. I am a sheet metal worker who has an oppturnity to work for the plumbers for awhile but need to pass a ua21 test.
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