Apr 16, 2013· To mount this part, the weld seam on the inside of the tube must be removed inorder for the part to stay flat. I need a way to remove the first 3"-4" of the inside weld seam. My operator currently takes his die grinder and a HSS burr and goes to work on it. Takes him a few hours to do 15 tubes. This is a little long.
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 ...
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Welded pipe (pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding. The most popular process for large diameter pipe uses a longitudinal seam weld.
Technical requirements for Pipes & Fittings While preparing the inquiry/purchase requisition of any piping component there are many points which are to be checked and confirmed with the vendor. It is the responsibility of the requisition engineer to include all the technical points & clauses applicable to the piping components in the inquiry ...
Walk Behind Seam Weld Grinder Grinds and polishes the seam area joining large steel sheets or plate. Grinding Machine, Grinding Machines, Grinding … Portable grinders from Saar-Hartmetall USA LLC offer one-of-a-kind solutions for beveling and weld seam cleanup when grinding is the only option.
Piping class or Pipe Class is a document that specifies the type of the components such as a type of pipe, schedule, material, flange ratings, branch types, valve types and valve trim material, gasket and all the other components specific requirements to be used for different fluids under different operating conditions in a plant.
Pipe gets assembled to other pipe, fittings, and flanges by either welding or threading. There are specific code requirements that describe when it is permissible to thread or when welding must be used. Within the welding world, you also need to be aware of several other possibilities. Flanges and fittings come as either slip on or weld neck.
Piping Elbows and Bends are very important pipe fitting which are used very frequently for changing direction in piping system. Piping Elbow and Piping bend are not the same, even though sometimes these two terms are interchangeably used.A BEND is simply a generic term in piping for an "offset" – a change in direction of the piping. It ...
technical calculation and estimator's man-hour manual erection of process or chemical plants i. piping above ground ii. pipelines iii. steel structures iv. process equipment v. storage tanks cylindrical and spheroidal vi. welding and flame cutting vii. corrosion protection viii. thermal insulation ix. estimates x. piping above ground
Aug 05, 2010· more detail about welding report form, wps sample, pqr sample,ndt report, welding inspection report form
Online calculator to quickly determine Pipe Sizing by Velocity for Steam. Includes 53 different calculations. Equations displayed for easy reference.
Electric resistance welding (ERW) refers to a group of welding processes such as spot and seam welding that produce coalescence of faying surfaces where heat to form the weld is generated by the electrical resistance of material combined with the time and the force used to hold the materials together during welding. Some factors influencing heat or welding temperatures are the proportions of ...
machines of grinding for long hollow pipes; how long life of the dump trucks for mining quarries; long seam grinding machine. long seam milling machines . piping long seam grinding how much required. piping long seam grinding how much 2 Sep 2013 . . focuses on the leading world market position for circ. pipe long seam grinding refloresta
What You Must Know About Beveling or Weld Preparation If beveling has typically been an afterthought in your shop, it could actually be costing you more in terms of quality and time than you realize, then examines some considerations about the beveling process and the equipment you should use that could improve your competitive advantage.
method used to produce the seam, the thoroughness of inspection of the seam's quality, and testing of the seam strength. There does not appear to be any authoritative document citing specific data on which historical or present day values for joint efficiency factors are based. It is likely that pipe seam joint efficiency factors were
Jun 13, 2006· Pipe that is made of seam welded plate has much less thickness variation. However, unless the pipe's longitudinal seam weld is 100 percent radiographed (NDE), the required pipe wall thickness calculation must include the weld efficiency coefficient for the type of weld used in the seam.
Section - 9A: Pipe Supports, Part - 1. Details ... Load Distribution Pads – This is simply a 120 degree section of pipe about 18" long. The Pad is cut from the same material as the subject line. The Pad is opened up a little to fit the pipe O. D. and then welded to the pipe at the required location.
A few yards of cord-filled piping for each sofa cushion. To figure out how much piping you need per cushion, just measure the length of each seam in which you intend to insert the piping and add a few inches for turning corners. For one 24 x 24-inch cushion from an average-size, 87-inch-wide sofa, you need 5 to 6 yards of piping. Iron and ...
Jun 13, 2012· When the vessel is RT than long seam can be at same line ? 100 radiographed on each c seam is consider when RT for vessel is spot? So it's mean when spot RT is there in vessel than only we have to maintain 5 T criteria for long seam setup.because ASME code use word "EXCEPT "- means remains the other.
Sep 03, 2015· The products are available at the manufacturing company GeBrax, Germany. For more information, see
Sep 25, 2005· Just as an interesting (to me) aside, I've seen (and repaired) a lot of pipe failures under hydro, and I've never seen the tear cross a circumferential weld. 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.
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Longitudinal seams in seam welded pipe shall be located so as to clear openings and external attachments possible. ... GRINDING WHEELS - Piping Fabrication and Erection Specification. ... When temporary make up at flanged joints is required in piping systems using special gaskets, make up the joint with a less expensive sheet gasket and save ...
Attachment 3, ASME B31.8, Gas Transmission & Distribution Piping Alignment and Acceptance Criteria 1.0 JOINT FIT-UP AND ALIGNMENT ... grinding. 1.5 Parts to be joined by a tee or fillet weld shall be brought into as close contact as is ... the requirements of API 1104.
This is particularly the case for carbon steel in applications where the seam is not going to be visible. For example, in undersea piping or when the metal is of structural importance and being hidden behind a panel. After all, unfinished welds are inherently stronger than finished welds due to the material removal involved in grinding them down.
Jun 03, 2013· The act of grinding can be deceivingly simple. But the devil's in the details. Effective grinding requires operators to apply enough pressure at the correct angle to let the grains—the "cutting tool" of a grinding disc—remove the most metal in the shortest time, while not prematurely wearing the disc or burning out the grinding tool.
to meet strict radiographic requirements for high pressure, high tem-perature or low temperature piping. Because of the low hydrogen ... as an abrasive grinding disc. • Depending on the pipe size, a half round file can be used to remove any burrs created when the land is ground on to the end of the pipe.