• General Welding Guidelines MCAA

    butt and branch connection welds on piping. Care shall be taken when cutting the pipe to make the plane of the cut square to the axis of the pipe, so that the flat land and root spacing will be uniform all the way around the pipe. End preparations shall be made by mechanical cutting or flame cutting. Irregularities should be removed by grinding.

  • Long Seam Grinding Machine kidho.be

    piping long seam grinding how much required Figure 1 CS Unitec's hand-held pipe sander and weld seam grinder follows . flanges, and on surface weld seams and spots has twice as many flaps as . Sales, said that centerless, multihead grinding machines have long been.

  • piping long seam grinding how much required

    • Schedule 40 and 80 Conduit, piping long seam grinding how much required. pipe wall thickness calculation formula .pdf. do concrete pipes have to be reinforced. » Learn More. long seam grinding machine. long seam grinding machine bridge grinder germany; piping long seam grinding how much required. erw pipe plate edge milling machine.

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  • Longitudinal weld seam on piping.

    Sep 25, 2005· The pipe rips open longitudinally until the tear comes to about 2" or 3" from the weld and then makes a 90 degree turn and tears parallel to the weld seam for another foot or so. I'm always suprised to see it as I would think the failure would be progressing with enought velocity and ferocity to continue right through the weld without even

  • Minimum Weld Seam Separation on PipeMar 19, 2015average welding timesMar 23, 2008See more results
  • 1926.57 Ventilation. Occupational Safety and Health

    The opening on the side of the disc shall be no larger than is required for the grinding operation, but must never be less than twice the area of the branch outlet. 1926.57(g)(5)(viii) Horizontal double-spindle disc grinders shall have a hood encircling the wheels and grinding chamber similar to

  • How to grind, blend and finish a weld seam Norton

    Mar 19, 2019· Grinding wheels should be the choice for carbon steel. They will remove the weld seam quickly and since the appearance of scratches are not such an issue compared to stainless steel, are ideal for this operation. Typically, in the spectrum of 5 to 35 degrees to the horizontal (depending on the grinding wheel used) should be the target.

  • Pipe Class and piping specifications Must Know of

    Piping Specs provides specific/additional requirements for the materials, components, or services that are beyond the code and standard requirements. For Example, if you want A106 Gr B pipe with Maximum carbon of 0.23% against standard requirements of 0.3% Max, you must be specified this requirement in your purchase specification.

  • The difference between seamless pipe and seamed pipe

    2 days ago· The welded steel pipe is formed by welding a steel plate rolled into a tubular shape by a seam or a spiral seam. In terms of the manufacturing method, it is further divided into a welded steel pipe for low-pressure fluid transportation, a spiral-welded electric steel pipe,a direct-wound welded steel pipe, an electric welded pipe, and the like.

  • 1.0 JOINT FIT-UP AND ALIGNMENT

    Attachment 3, ASME B31.8, Gas Transmission & Distribution Piping Alignment and Acceptance Criteria 2.1.5 When radiography or other NDE methods are employed, the procedure shall meet the requirements of API 1104. 2.1.6 When the pipe size is less NPS 6

  • longitudinal seam alignment ASME (mechanical)

    G'day, I have come across a problem in the field were a seam welded pipe has been welded end to end ( circumfrential weld) and the seams (longitudinal) are directly apposed to each other on either side of the cicrumfrential weld, I can not find in B31.3 where it states there must be a minimum amount these two longitudinal seams must be separated a certain amount, I have found the clause in AS

  • How to grind, blend and finish a weld seam Norton Abrasives

    Mar 19, 2019· Grinding wheels should be the choice for carbon steel. They will remove the weld seam quickly and since the appearance of scratches are not such an issue compared to stainless steel, are ideal for this operation. Typically, in the spectrum of 5 to 35 degrees to the horizontal (depending on the grinding wheel used) should be the target.

  • Quick calculator Welding Calculator

    Th Sheet thickness (mm) Steel density. Seam length (m) G Root gap (mm) c Cap (mm) p -Penetration (mm) o Overlap (mm) r Depth of root face (mm) α1 Alpha1 (°) α2 Alpha2 (°) Seam weight (kg) Volume (cm3) Go further. Air liquide Welding proposes to go further with the comparative calculation that will help you to make up your mind

  • 1926.57 Ventilation. Occupational Safety and Health

    The opening on the side of the disc shall be no larger than is required for the grinding operation, but must never be less than twice the area of the branch outlet. 1926.57(g)(5)(viii) Horizontal double-spindle disc grinders shall have a hood encircling the wheels and grinding chamber similar to

  • Minimum Weld Seam Separation on Pipe

    Mar 19, 2015· We would like to know what the minimum weld seam separation for pipe is under API 1104, ASME IV and AWS D1.1. I began to look through our code books, which are all out of date, and found the Girth Weld Alignment 5.22.3.1 in AWS D1.1 but have yet to find anything mentioning weld seams and where they should be placed.

  • Pipe Class and piping specifications Must Know of Pipe

    Piping Specs provides specific/additional requirements for the materials, components, or services that are beyond the code and standard requirements. For Example, if you want A106 Gr B pipe with Maximum carbon of 0.23% against standard requirements of 0.3% Max, you must be specified this requirement in your purchase specification.

  • The difference between seamless pipe and seamed pipe

    2 days ago· The welded steel pipe is formed by welding a steel plate rolled into a tubular shape by a seam or a spiral seam. In terms of the manufacturing method, it is further divided into a welded steel pipe for low-pressure fluid transportation, a spiral-welded electric steel pipe,a direct-wound welded steel pipe, an electric welded pipe, and the like.

  • SYSTEM DESIGN PROCESS PLANT PIPING OVERVIEW OF

    Pipe Thickness Required For Internal Pressure Electric fusion welded pipe, double butt seam 1.00 0.90 0.85 Nickel and Nickel Alloy B 161 . . . Seamless pipe and tube 1.00 B 514 . . . Welded pipe 0.80 B 675 All Welded pipe 0.80. 51 Table 6.3 Temperature,

  • longitudinal seam alignment ASME (mechanical) Code

    G'day, I have come across a problem in the field were a seam welded pipe has been welded end to end ( circumfrential weld) and the seams (longitudinal) are directly apposed to each other on either side of the cicrumfrential weld, I can not find in B31.3 where it states there must be a minimum amount these two longitudinal seams must be separated a certain amount, I have found the clause in AS

  • Joint Efficiency Pressure Vessel Engineering

    RT-3 increases the inspection requirements to spot radiography on both the long and circumferential seams of a vessel. There is no value added for the spot radiography of the circumferential joints since the long seam joint efficiency governs the design and RT-4 Option 1 already increased the long seam efficiency to 0.85.

  • Sewing Basics: How To Make Continuous Bias For Welt Piping

    Aug 07, 2012· Reply To This Comment ↓ How To Upholster A Dining Chair With Welt Cord & Buttons August 8, 2012 at 12:11 pm In addition to the main piece of fabric for the top of the chair seat, you will also need enough fabric-covered welt cord to go around the edge of the seat, plus a long strip of fabric, about 5 or 6 inches wide, long enough to go around the outside of the chair seat.

  • Steam Piping Best Practices CleanBoiler

    On the other side of this wall there is a long run of steam pipe; it then makes 2 sharp 90 Degree bends. The second bend, the lower one in the photo, would be a good spot for steam trap to drain condensate from the line. Leaking Equipment.

  • Best Practices for Condensate Removal on Steam Lines TLV

    The flow of steam is typically much faster in steam distribution piping than in equipment and can reach speeds of over 30 m/s (100 ft/s). At these speeds, when the cross-sectional area of a pipe section is completely filled by water, slugs of condensate can be carried through the piping at high velocity causing water hammer, which can cause

  • grinding a weld inside a pipe 8' from the opening..how

    The grinding wheel drag on the pipe ID and Weld causes the sleve to rotate moving forward on the acme thd. The grinder has a rotating coupling so as to not wind up the hose. May have to put a drag break on the sleve with the die grinder turning 8-10K

  • Edge Preparation and Alignment for Welding of Pipes » The

    Tags: #piping_engineering #piping_welding #edge_preparation #piping_fabrication Edge Preparation The edges to be welded shall be prepared to meet the joint design requirements by any of the following methods recommended: Carbon Steel : Gas cutting, machining or grinding methods shall be used. After gas cutting, oxides shall be removed by chipping or grinding. Low Alloy Steels (containing up to

  • Steam Piping Best Practices CleanBoiler

    On the other side of this wall there is a long run of steam pipe; it then makes 2 sharp 90 Degree bends. The second bend, the lower one in the photo, would be a good spot for steam trap to drain condensate from the line. Leaking Equipment.

  • Seamless or welded pipes? BUTTING

    Pipe Lengths and Quantities When manufacturing seamless pipes, the length manufactured depends on the weight per metre or per rod. Thus up to NB 100, pipe lengths of a maximum 13 m, and up to NB 200 pipe lengths of a maximum of around 4 m can be produced. The minimum purchase quantity is determined by the size of the production batch of around 1 t.

  • 1926.57 Ventilation. Occupational Safety and Health

    The opening on the side of the disc shall be no larger than is required for the grinding operation, but must never be less than twice the area of the branch outlet. 1926.57(g)(5)(viii) Horizontal double-spindle disc grinders shall have a hood encircling the wheels and grinding chamber similar to

  • Edge Preparation and Alignment for Welding of Pipes » The

    Tags: #piping_engineering #piping_welding #edge_preparation #piping_fabrication Edge Preparation The edges to be welded shall be prepared to meet the joint design requirements by any of the following methods recommended: Carbon Steel : Gas cutting, machining or grinding methods shall be used. After gas cutting, oxides shall be removed by chipping or grinding. Low Alloy Steels (containing up to

  • SYSTEM DESIGN PROCESS PLANT PIPING OVERVIEW OF

    Pipe Thickness Required For Internal Pressure Electric fusion welded pipe, double butt seam 1.00 0.90 0.85 Nickel and Nickel Alloy B 161 . . . Seamless pipe and tube 1.00 B 514 . . . Welded pipe 0.80 B 675 All Welded pipe 0.80. 51 Table 6.3 Temperature,

  • The difference between seamless pipe and seamed pipe

    2 days ago· The welded steel pipe is formed by welding a steel plate rolled into a tubular shape by a seam or a spiral seam. In terms of the manufacturing method, it is further divided into a welded steel pipe for low-pressure fluid transportation, a spiral-welded electric steel pipe,a direct-wound welded steel pipe, an electric welded pipe, and the like.

  • grinding a weld inside a pipe 8' from the opening..how

    The grinding wheel drag on the pipe ID and Weld causes the sleve to rotate moving forward on the acme thd. The grinder has a rotating coupling so as to not wind up the hose. May have to put a drag break on the sleve with the die grinder turning 8-10K

  • Joint Efficiency Pressure Vessel Engineering

    RT-3 increases the inspection requirements to spot radiography on both the long and circumferential seams of a vessel. There is no value added for the spot radiography of the circumferential joints since the long seam joint efficiency governs the design and RT-4 Option 1 already increased the long seam efficiency to 0.85.

  • Sewing Basics: How To Make Continuous Bias For Welt Piping

    Aug 07, 2012· Reply To This Comment ↓ How To Upholster A Dining Chair With Welt Cord & Buttons August 8, 2012 at 12:11 pm In addition to the main piece of fabric for the top of the chair seat, you will also need enough fabric-covered welt cord to go around the edge of the seat, plus a long strip of fabric, about 5 or 6 inches wide, long enough to go around the outside of the chair seat.

  • ASME B31.3 Process Piping Guide Los Alamos National

    LANL Engineering Standards Manual PD342 Chapter 17 Pressure Safety Section D20-B31.3-G, ASME B31.3 Process Piping Guide Rev. 2, 3/10/09 4 The Owner and Designer are responsible for compliance with the personnel and process qualification requirements of the codes and standards. In particular, the application of ASME B31.3 requires compliance with the Inspector qualification

  • A Complete Guide to Pipe Sizes and Pipe Schedule Free

    What is Nominal Pipe Size? Nominal pipe size (NPS) is the number that defines the size of the pipe.For example, when you say 6” pipe, the 6” is the nominal size of that pipe. However, for the pipe sizes, NPS 14 and above Outside Diameter is the same as NPS.

  • Information Center How to Select the Correct Ductwork

    In reality, proper pipe sizing can get complicated and depends on many variables; tool size, air requirements, length of pipe run required, number of machines running at one time etc. A very common and very disastrous problem in duct design is to simply run all 4" diameter pipe.

  • Continuous bias binding cheat sheets, formulas and more

    Apr 15, 2018· Make sure your piece is a perfect rectangle (remove selvages, straighten edges). Then measure this piece; you need to subtract ½’’ for seam allowances from both length and width of the piece. You will calculate first the area of the piece and then divide it by the desired width of binding. (length-0.5) x (width-0.5)= area of the fabric

  • A-34 Piping Design and Test Requirements

    A. Welds shall be inspected as required by Gas Standard D-40. B. Girth welds used to tie in fabricated units and short sections of pipe shall be inspected as required by Gas Standard D-40. C. Trenches, pipe, and pipe coating shall be inspected as required by Gas Standard A-36. 6. Testing A.