For the best experience on our site, be sure to turn on Javascript in your browser. Alloy Steel: ASTM A335 Gr.P1/P2/P5/P7/P9/P11/P12/P22. Different between tube and pipe : Tube:- 1. Save my name and email in this browser for the next time I comment. A pipe is measured by Nominal Pipe Size (NPS) per Inchand Schedule number ( Thickness of pipe ) andtube is measures by Outside Diameter (OD) andBWG number ( Thickness of Tube). Top 180+ Piping Interview Questions with Answers Learn about Ultra-tec cable cutting, swaging measurements and how to install cable railing. | Introduction to High-Frequency Welding Machine (PDF). Save my name and email in this browser for the next time I comment. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'whatispiping_com-banner-2','ezslot_5',851,'0','0'])};__ez_fad_position('div-gpt-ad-whatispiping_com-banner-2-0');report this ad, Comparison of Pipe and Tube | Pipe Vs Tube (With PDF). Ans: MITER BEND: How to Calculate Length, Angle of Cut, Weight, and Cut-back of the Miters? The outside diameter of tubes is numerically equal to the corresponding size. 56 Pipefitter Interview Questions (With Sample Answers) - Indeed The answer to that question is yes! Pipe is typically ordered using the Nominal Pipe Size (NPS) standard and by specifying a nominal diameter (pipe size) and schedule number (wall thickness). Stainless Steel :- ASTM A213 TP304/TP304L/TP304H/TP310/TP316/TP316L/TP316H/ TP317/TP321/TP321H/TP347/TP347H/TP348/TP348H, ASTM A608 HK40. HPV For removing Air during Hydro-test. The size of the Tubes is specified in millimeters or in inches by outside diameter. Discover Best Places to work in India. 26. (Using Butt welding). Tubes can be joined quickly and easily with flaring, brazing, or couplings, but for this reason, they dont offer the same stability, Tolerances are very strict with tubes compared to pipes and tubes are often more expensive to produce than pipes, Pipe manufacturing is easier as compared to tubes. Many a time, these terms are used interchangeably. 1. So lets start with the first question. Tube vs Pipe - The Differences Explained in Plain English - JTC Metals The most common are beveled and plain ends, however for tube it is a quick connection on the site (threaded and grooved ends, couplings, etc). (The application cost of labor-intensive coatings such as painting has risen far more than the cost of factory operations such as galvanizing.). Here I will show you the list of carbon steel, alloy steel, stainless steel, and nickel steel grades. Differences between Pipe and Tube From a layman's viewpoint, Both Pipe and Tube seem to be the same as they have many similarities like both are hollow, usually made from metals, can transfer fluids, etc. This will helpful for beginners. Stainless Steel: ASTM A312TP304/TP304L/TP304H/TP308/TP310/TP316/TP316L/ TP316H/TP317/TP321/TP321H/TP347/TP347H/TP348/TP348H. Thanks once again. This website is very helpful for beginners like me. What is Category M Fluid Service for Process Piping Design? Ans: Basis for deciding Stress critical lines, Ans: https://whatispiping.com/basis-for-deciding-stress-critical-lines, Ans: https://whatispiping.com/column-piping, And: https://whatispiping.com/basics-of-pipe-stress-analysis, Ans: https://whatispiping.com/spring-hangers-common-interview-questions-with-answers, Ans: https://whatispiping.com/supporting-of-piping-systems. The other difference between pipe and tube is the critical dimension used to describe the pipe size or the tube size. And nickel steel is used for a low-temperature application. Interview question for Mechanical Design Engineer in Chennai.Difference between pipe and tube? Minimum spacing of circumferential welds between centerlines shall not be less than 4 times the pipe wall thickness of 25 mm whichever is greater. What is Steam Piping? Hvac Interview Questions for Piping & Fittings You can visit my website to read and remember these grades. PVC(Polyvinyl chloride) Polyvinyl chloride, more correctly but unusually poly (vinyl chloride), commonly abbreviatedPVC, is the third-most widely produced syntheticplasticpolymer, afterpolyethyleneandpolypropylene. The thumb rule is that the minimum distance between adjacent butt welds is 1D. This website is my first venture into the world of blogging with the aim of connecting with other piping engineers around the world. | Role and Responsibilities and Basic Requirement, HVAC Training Free Online: Boost Your Career with No Cost, HVAC heat load calculation software free download, Free HVAC Load Calculation Software: Simplify Your HVAC Design Process, Radiant Cooling System Vs Conventional Air Conditioning System, TOP 10 Best YouTube HVAC Channels to Learn, Lowest first cost: Galvanizing is lower in first cost than many other commonly specified protective coatings for steel. Minimum spacing of circumferential welds between centerlines shall not be less than 4 times the pipe wall thickness of 25 mm whichever is greater. Smaller gauge numbers indicate larger outside diameters. Construction They consist of a steel pipe, an insulating layer, and an outer casing. Difference between Pipe and Tube | Pipe vs Tube In the next video, I will explain to you the flange-related questions. Tube size is measured with its OD, while piping is measured differently and has its own set of standards. The strength of a tube depends on the wall thickness. DIFFERENCE BETWEEN TUBE AND PIPE ACCORDING TO THICKNESS PIPE:- In terms of thickness pipe wall thickness is generally measured in scheduled numbers. 2021 JTCmetals.com. I hope that you have learned a lot from this video. Alloy Steel:- ASTM A387 Gr.2/Gr.5/Gr.7/Gr.9/Gr.11/Gr.12/Gr.22. Mechanical Interview Questions 4 contains questions about Piston Ring, Power plant, Hydrostatic system, Ductile-Brittle Transition Temperature in metals, Hydrodynamic Cavitation, Powder Technology, Stress Strain curve for Steel, difference between Pipe and Tube, Welding damage Eye sight, BCC, FCC, CPH. What is a Tube: Over the internet, you will find that tube is a circular structural member and the confusion start from here. Ans: What is Acoustic-Induced Vibration or AIV? What does a Pipe Stress Engineer need to know? Ans:11 most important questions & answers from ASME B 31.3 which a Piping stress engineer must know. For power plants, the design code followed for steam piping in ASME What is High-Frequency Welding? Tubes are used in tracing lines, tubes for heat exchangers & fired heaters & instrument connections. Tubes can round, square and rectangular. You could Ryerson or Alro. The following list will provide a few interview questions asked in the different interviews for a Piping Engineering (Stress) position. Schedule 40 pipe is the most common, however when extra strength is required schedule 80 is available. Tubes are typically ordered to outside diameter and wall thickness; however, it may also be ordered as OD & ID or ID and Wall Thickness. The answer to that question is yes! The difference between Gr A, B &C indicates different % of carbon. But in actual practice Tubes and Pipes are not the same as both possess different features. NPS is a size standard established by the American National Standards Institute (ANSI), and should NOT be confused with the various thread standards such as NPT and NPSC. I still believe in respect. What are the commonly used material for Pipes, butt welding fittings, flanges, and plates? The outside diameter of a pipe is the same for all schedules in nominal pipe diameter. Ans: Stress or Strain: Which comes first? Dimensions and Weights (full) ASME B36.10 Pipes, Dimensions and Weights (full) ASME B36.19 Pipes, Dimensions and Weights of Pipes ASTM A53/A53M, Werner Slken 2008 - Refer the following post: http://processpiping.blogspot.com/2013/08/InfoASMEB31.3.html. Pipes are always round, whereas tubes can be square, rectangular or round. Due to this fundamental difference, we generally call pipes and tubes as: water pipes, steam pipes, slurry pipes, boiler tubes, heat exchanger tubes, radiator tubes, etc. The circular shape of the pipe make it efficient when handling pressure from the liquid flowing through. 1-1/2 pipe size flanges have an opening to fit over 1.90 OD the actual outside diameter of 1-1/2 pipe. 11 most important questions & answers from ASME B 31.3 which a Piping stress engineer must know. Pipe Schedule is the term used to describe the thickness of a PIPING. Im also a MECHANICAL ENGINEER FromINDIA, HI ANUP SIR,IAM ALSO A MECHANICAL ENGINEER GRADUATE AND WORKING AS PROCESS DESIGNER. The thickness of tube is defined by a gauge number. I am Varun Patel. They are specified by Nominal Pipe Size (NPS) and Schedule (wall thickness). February 6, 2013 43,844 views Share Followers 0 What are the differences between pipe and tube ? XS, Sch. Tags: Difference Between Tube and Pipe, tubing, 2023 Eagle Stainless Tube & Fabrication, Inc. All rights Reserved. Actual inside diameters of a 1 inch pipe. state-of-the-art solutions for our customers. Such as above defined, the inside diameter is determined by the oudside diameter (OD) and wall thickness (WT). Although tubing has three dimensions (O.D., I.D. Now, remember that this % of carbon will affect the strength and ductility of the material. FRP Pipe / GRP Pipes are manufactured by the widely used helical filament winding method. Pipes are produced on large scale (high yield tons / hour) according to highly productive processes. Strength is not the major concern. Tubes are used for both HEAT&MASS Transfer. PIPING / Piping Questions. The stated OD and measured OD are generally within very close tolerances of each other. ASTM A53 pipes are mainly used for utility services whereas A106 Gr. It can only be connected with elbow/couplers to change the orientation. What is High-Frequency Welding? _(4.5)? This example shows the difference between a 1-1/2 pipe flange and a 1-1/2 tube flange. Piping QC - Inspectors Questions and Answers. Through this article, we will try to investigate all such characteristics based on a few parameters like Size, Shape, Diameter, Thickness, Use, Availability, End Connection, Design Standard, etc. To answer this question, you should know some of the most frequently used material grades in piping. Nominal Pipe Size (NPS) is a North American set of standard sizes for pipe. Long life. Anonymous on Nov 8, 2020 Interviews > Fermilab To comment on this, Sign In or Sign Up. Currently, I work in a reputed MNC as a Senior Piping Stress Engineer. Visit my website hardhatengineer.com for free study materials and dont forget to subscribe to my channel to get regular updates on new videos and also like and share my video with your friends. In case you could not find out a specific answer reply in the comments section. Both can be galvanized. Entry posted by The type of support for pipe is selected after analysis of the load that the pipe will be sustaining. It is generally used for structural purpose, the OD is important and exact number. Carbon steel is used for normal pressure temperature applications. What is Acoustic-Induced Vibration or AIV? First of all , i really appreciate you works. Pipes are used in all process fluids and services. Answers to most of the questions are added here for reference. Tubing is generally used where small diameters are required. This is supposed to prevent the overlap of HAZs. The Sum of the percentage of alloying elements in the steel will decide whether steel is called low alloy or high alloy steel. The schedule number can be the same on different size pipe but the actual wall thickness will be different. The thickness of a tube is defined by a gauge number. A106 Gr A has 0.25% Carbon, Gr B has 0.30%, and Gr C has 0.35% Carbon. The life expectancy of galvanized coatings on typical structural members is far in excess of 50 years in most rural environments, and 20 to 25 years plus, even in severe urban and coastal exposure. For example, a 2-inch nominal steel pipeconsists of a family of steel pipe with a 2.375 diameter. As said earlier, you can visit my website hardhatengineer.com for this list. 2. GoogleAnalytics. There's also the difference in shape; you can look at a stainless steel . Technical solution / TecSolution 3.3Welcome by TecSolution 3.3 . Sir so many piping draftsmans are hired on temporary or contract basis. In simpler terms, pipe cannot be bent. The biggest difference between tube and pipe is their shape. Alloy Steel :- ASTM A161T1, ASTM A213T1/T2/T5/T7/T9/T11/T12/T22. The hollow pipe is then extruded through a die and mandrel combination to reduce the outside diameter and to expand the inside diameter. How to determine what you require a pipe or a tube? Pipe will always be round however tube can be round, square or rectangular. What will be the position of Piston Ring? Through this platform, I will share my experiences and knowledge with you in an innovative way. All rights reserved. Will pipe outer diameter 40 mm, will mate 50 mm coupling? You'll be amazed at what we can create together! Our products are exported to over 70 countries across the world, while in India we have supplies to even the remote areas. If youre interested in requesting a product quote, please click below to get started! Welcome to my space, I am Anup Kumar Dey, an experienced piping engineer for the last 19 years. Supports of copper piping are as follows: Long radius elbows are used for small pressure drops whereas short radius elbow is used for high-pressure drops. Nickel Steel :- ASTM A350 LF3, ASTM A522. 4. Tubes are available with coupling ends, irregular ends, special screw thread, etc. Reviews Jobs Interview Questions About Company Salaries Benefits Home . Pipes are always rigid and resistant to bending. Tubes can be square, rectangular, and round. Required fields are marked *. Question no 9.Cold spring and cold pull are same. Ans: Double Block and Bleed Valve: Introduction, Working, Benefits, Applications, Ans: Pipe Expansion Joint Details: Components, Types, Materials, Manufacturers, Ans: Hot Sustained Stress (Lift-Off) Checking in Caesar II, Ans: Stress Analysis of Vertical Reboiler Piping using Caesar II. NPS pipe 14 and up have measured ODs that correspond to the nominal size. I am a Mechanical Engineer turned into a Piping Engineer. Pipe is typically ordered using the Nominal Pipe Size (NPS) standard and by specifying a nominal diameter (pipe size) and schedule number (wall thickness). Tubes are used for mechanical applications (Heat Exchanger, Fired heater, Boiler, etc. In ERW pipes and tubes there are three classes: SS 304 contains 18% chromium and 8% nickel while SS 316 contains 16% chromium, 10% nickel and 2% molybdenum. Tubes are indicated with outer diameter and wall thickness, in inches or in millimeters. Can you post the answers for the above questions . You have probably heard pipe and tube used interchangeably but are they different. What are the differences between tube and pipe? - Glassdoor In this video you will be informed about the difference of pipe and tube. Carbon Steel :- ASTM A285, ASTM A515, ASTM A516. By using insulated pipe supports, direct heat transfer between pipes and their supports are prevented. The products include fluids, gas, pellets, powders and more. They are circular in cross-section and specified by Nominal Pipe Size. Tubes perform better in applications that require durability and strength. Dear Anup thanks, I am Noor ul Arefeen from Pakistan. I am very much passionate about blogging and always tried to do unique things. You cannot paste images directly. Pipe vs Tube: The Differences Between Pipe and Tube Steel tubes are produced to very strict tolerances. This is a very common question. Clear editor. Tubing is used in structural applications so the outside diameter becomes the important dimension. Our annual sales volume over 70,000 tonnes in India and Worldwide, has won us the dealership and distributorship of renowned seamless (JINDAL, ISMT) and welded steel pipes manufacturing companies across the globe. However, stainless steel, aluminum, and steel tubing all have measured and stated ODs that are exact or within a specified tolerance, usually in the thousandths of an inch (e.g. 1803, KWC, Kalamboli Steel Market, New Mumbai, Office No. During production, pipes are not manufactured in the same lengths, and during the construction of the process plant, you required various lengths of pipes. In this video you will be informed about the difference of pipe and tube. "In the joy of others lies our own" - HDH Pramukh Swami Maharaj, Pipe Fittings Inspection Visual & Testings, Piping Interview Questions Part-2 (Pipe Fittings Code and Standards) , Piping Interview Questions Part-4 (Flange Class VS Flange Schedule). Here, A and B are two weld joints. tube tube vs pipe You have probably heard the terms pipe and tube used interchangeably, and there's a good chance you aren't exactly sure what the difference is between them. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'whatispiping_com-banner-2','ezslot_5',851,'0','0'])};__ez_fad_position('div-gpt-ad-whatispiping_com-banner-2-0');report this ad, Top 180+ Piping Interview Questions with Answers. After all, how different can hollow cylinders get, and who really cares enough to go and look? Pipes are extensively used in all Process, Power & Utility lines to carry fluids. Tube normally has a thinner wall thickness. difference between pipe and tube - ALLInterview In this video, you will learn about the most common questions regarding pipe fittings material standards that you may face during the interview. Lets look at some of the most common material grades used for manufacturing the piping components. Display as a link instead, 5. An interviewer will ask this question to check your fundamentals. FRP / GRP Pipes manufactured by filament winding method utilize continuous glass strand roving impregnated with polyester resin and helically wound on rotating mandrel at a specified winding angle. How will you decide the critical line list with help of ASME B31.3? Mechanical strength is a major concern for tubes. In the context of refineries or oil and gas plants, "fired equipment" refers to the equipment that is used for the combustion of fuel to generate heat or energy. We procure significant quantities of materials from Indian carbon steel pipe mills and overseas manufacturers of stainless steel pipes. For more information contact us. The biggestdifference between tubeandpipeis their shape. Regardless of the wall thickness the nominal OD of a pipe will not change. ), Pipe thickness depends on the schedule, so there is no fixed increment, The thickness of tubes increases in standard increments such as 1 mm or 2 mm. You can answer this question 2. For catalyst, flows very long radius elbows are used. Why is Aveva PDMS better than Intergraph PDS? The name TUBE refers to round, square, rectangular and oval hollow sections that are used for pressure equipment, for mechanical applications, and for instrumentation systems. Ans: What does a Pipe Stress Engineer need to know? link to What is Steam Piping? Delivery time for pipes can be short compared to tube which is generally longer. Most of the standards that I have explained to you in earlier videos are used for dimensional inspection of the piping components. 1. Alloy Steel :- ASTM A234 WP1/WP5/WP7/WP9/WP11/WP12/WP22. This extra heat transfer surface area is useful when there is a fluid with low ' heat transfer coefficient ' or 'temperature difference (T)' on the outside of the tube. Carbon Steel :- ASTM A181, ASTM A105, ASTM A350 LF1/2. +/- 0.04"). Refer EJMA for more details. Difference between Pipe vs Tube / Pipe and tube difference Interview Different material specifications are segregated in separate Piping Class. Through this platform, I will share my experiences and knowledge with you in an innovative way. Pipe class is developed considering Operating Pressure, temperature, and corrosive environment. Larsen & Toubro Limited Interview Questions for Graduate Engineer Trainee (Get): Difference between pipes and tubes. What is their future ? A/B/C, ASTM A333 Gr.1/Gr.6. Ans: Finned tube heat exchangers are characterized by the significantly increased outer tube area. If not, it is never closer than 1-1/2. Difference between Codes, Standards, and Guidelines, SOP For Airflow Velocity and Uniformity Test, TOP 35 HVAC INTERVIEW QUESTIONS FOR AIR HANDLING UNIT, What are the different Job Opportunities in HVAC Industry? Insulating MOC The insulating material usually used is polyurethane foam or similar, with a coefficient of thermal conductivity k=0.033-0.024 W/mK (thermal conductivity). Given our extensive network for sourcing the best quality goods at most competitive prices, we are a preferred seller of steel products for various turnkey project in India and Worldwide. Hi, very useful & detail difference has given between tube & pipe. Stainless steel is used for corrosive applications. 1-1/2 tubing has a true 1.50 outside diameter. Ans: Pipe Thickness Calculation of Straight Pipe under External Pressure/ Vacuum Pressure Condition. Pipe wall thickness is expressed in schedule number (most common are Sch 40, Sch STD., Sch. What is low alloy steel, and what is high alloy steel? Pipe is identified by NB and thickness is defined by Schedule whereas Tube is identified by OD & its thickness as BWG (Birmingham wire gauge or 1/100 inch). and wall thickness) only two may be specified with tolerances and the third is theoretical. What is the difference between Jigs & fixtures.? What Is The Difference Between Pipe And Tube? At least one of the pipe surfaces is not smooth. Whereas pipes are normally used to transport gasses or liquids making it important to know the capacity. 2020 The Wagner Companies, R&B Wagner, Inc. All Rights Reserved. 1-1/2 pipe size flanges have an opening to fit over 1.90 OD the actual outside diameter of 1-1/2 pipe. STD., Sch. The classification of pipes are schedule and nominal diameter. AmbitionBox Interview Questions. A narrower range for tubing (up to 5 inches), larger for steel tubes for mechanical applications. Piping Component Quiz Test yourself, Take This Quiz. These flanges are of forged construction. 1. Tubes have higher price due to productivity, strict tolerances and inspection requirements. The end connection of pipes is normally plain or beveled for welding purposes. Eg: Copper tube used in plumbing, steel tube used in hydraulics. The inner and Outer surface of the pipe is rough in comparison to the tube, Tubes are manufactured on both the inner and outer surfaces as smooth, The Thickness of the pipe is decided as per governing codes like. What is the difference between pipe and a tube? - Interview Questions Stainless Steel :- ASTM A240 TP410/TP405/TP430/TP304/TP304L/TP309/TP310S/ TP316/TP316L/TP317/TP321/TP347/TP348. JavaScript seems to be disabled in your browser. Most people, even experts working in related industries, don't actually know. 2. Normally small-bore tube is used in process piping. Is there a pipe or tube size that has an ID of the OD of 4 schedule 40 steel pipe. Difference between Primary loads and Secondary loads in a Piping System, Slug Flow Analysis Using Dynamic Spectrum Method in Caesar II, Basics for Stress Analysis of Underground Piping using Caesar II. A galvanized coating has a unique metallurgical structure which gives outstanding resistance to mechanical damage in transport, erection and service. The outside diameter of pipe up to size 12 is numerically larger than corresponding pipe size. They are specified by their outer diameter and tube wall thickness, in inches or in millimeters. The biggest difference between pipe and tube is there shape. For structural use, tubes are available in custom sizes. Size Dimensions:- The other difference between pipe and tube is the critical dimension used to describe the pipe size or the tube size. For tubing, the wall thickness is measured also with a gage nomenclature. Stainless Steel :- ASTM A403 WP304/WP304L/WP304H/WP309/WP310/WP316/ WP316L/WP316H/ WP317/WP321/WP321H/WP347/WP347H/ WP348. Pipe is a hollow section with round cross section for the conveyance of products. Tubulars undergo several dimensional quality checks, such as straightness, roundness, wall thickness, surface, during the manufacturing process.