IS 1239 PDF
Bhartṛhari—Nītiśatakam. “Knowledge is such a treasure which cannot be stolen” . IS (): Steel Tubes, Tubulars and Other Wrought. IS (): Steel Tubes, Tubulars and Other Steel. Fittings, Part 2: Steel Pipe . diameter of tubes in accordance with IS (Part 1). Outside diameter of. 'Each screwed tube shall be supplied with one socket conforming to IS Mild steel tubes, tubulars and other. (Part 2): wrought steel fittings.
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Medium and Heavy. Tubes. A. Thickness. Tolerance. Tolerances As Per IS: 1. Single Tube (light series). +10%. -8%. Light, Medium & Heavy tubes. IS PART 1 - MILD STEEL TUBE PIPE - Free download as PDF File .pdf), Text File .txt) or read online for free. Note(i) IS & BS cover sizes upto mm NB all series and & mm NB medium & heavy series, plain end & screwed and socketed ends.
No opening shall occur by Should the test pieces The tubes shall be painted yellow or brown. Clause 1. A-1 The maximum permissible pressure and A-2 For tubes fitted with appropriate flanges or temperature for tubes with screwed and suitably butt welded together, the maximum socketed joints shall be as given in Table 4.
Tile IS NO. The concentric test coil applicable to welded or length, of the notch at full depth shall not seamless tubes , or b segmental coil covering exceed 50 mm.
For calibration purposes the tube surface. The pitch of the helical scan shall relative speed between the standard tube ensure that the whole of the tube surface is containing standard defect and the test coils effectively covered.
This method is applicable shall be the same as that used during the to seamless tubes only. The test piece changing the sensitivity by 2dB to allow for for off-line equipment shall have similar equipment drift, the equipment shall be recali- electromagnetic properties and same diameter brated. Following recalibration, all tubes and thickness as the tube to be tested.
For tested since the previous check shall be retested, online equipment, running tube may he unless recordings from individually identified considered as standard tube. The diameter of the C Others may be accepted after C BIS is a statutory institution established under the Bureau of Indian Standards Act, to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country.
BIS has the copyright of all itspublications. No partof these publications maybe reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Amend No. Date of Issue Text Affected. Manaksanstha Telephones: Page 1, clause 3. Pago 7, clause -. Page 7, clause X. Page 1, clause 6. I Page 1, chmc 2. At the time of publication, the editions indicated were valid.
All Iudian Standards are subject to revision, and parties to agreements based on! Page 4, clause Page 6, Annex B -— Substitute the following matter for tbc existing: Mild steel tubes, tubulara and other wrought steel fitting..
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In this revision, the following main modifications have been made: Title Methods for chemical analysis Copyright BIS has the copyright of all itspublications. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. This Indian Standard has been developed from Doc: MTD 19 Telephone Central: Documents Similar To IS: Atul Kumar Engineer.
Shyamal Kumar. Vishal Hirde.
Rathnakar Naik. Nawid Ahmed Khan.
Due consideration has also been given to international coordinationamong the standards prevailing in different countries. British StandardsInstitution.. This standard contains clauses 6. For the purpose of deciding whether a particular requirement of this standard is complied with,the final value, observed or calculated, expressing the result of a test or analysis, shall be roundedoff in accordance with IS 2.
Thenumber of significant places retained in the rounded off value should be the same as that of thespecified value in this standard. Themaxiqmm permissible pressure and temperaturesfor different sizes of tubes are given in Annex Afot guidance only.
For each size of tube, the outsidediameter is fixed by the corresponding screwthread dimensions of IS , and there-fore, the actual bore of each size of tube willvary according to the thickness.
The term tube issynonymous wuth the term pipe. NOTE Handling-tight means that the socket is sotight fitted that it should not fall down during handlingor transit. The sulphur and phosphorusrequirements in steel shall not exceed percent each. NOTE Tuiws made by manual welding are notcovered by thn specification. Only mediumand heavy class of tubes shall normally be usedfor steam services. In case ofdispute the procedure given in IS and itsrelevant parts shall be the referee method.
How-ever, where the method is not given in IS and its relevant parts, the referee methodsh allbe as agreed to betlveen the purchaser and themanufacturer. Gauging in accordance with IS shallbe considered as an adequate test for con-formity of threads of IS Where the tubeapproaches the lower limit of outside diameter,some incomplete thr,eads perfect at root andimperfect at the crest may be expected fromand beyond the gauge plane.
Such incompletethreads shall not be regarded as justificationfor rejection of the tubes. Also, the minimumlength of threads in light: tubes shall be 80percent of that specified in IS In addition, it shallbe permissible for two lengths to be jointedtogether to make a random length, providedthat the number of such jointed lengths doesnot exceed 5 percent of the total numbers oflengths for sizes below 65 mm nominal boreand 7. Includesone socket for screwed and socketed tubes. Eddy current test mayhe done in place of hydrostatic test as per theprocedure given in Annex C, subject to mutualagreement between the purchaser and themanufacturer.
For welded tubes, the strip tensile test specimen shallnot contain the weld.
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Welded tubes shallbe bent with the weld at 90 to the plane ofbending. The tubes shall not be filled for thistest. No opening shall occur byfracture in the weld until the distance betweenthe plates is less than 75 percent of the originaloutside diameter of the pipe and no cracks orbreaks in the metal elsewhere than in the weldshall occur until the distance between the platesis less than 60 percent of the original outsidediameter.
Should the test piecesfrom both these additional samples pass, thematerial shall be deemed to comply with therequirements of that particular test.
IS 1239-1: Steel Tubes, Tubulars and Other Wrought Steel Fittings, Part 1: Steel Tubes
Shouldthe test pieces from either of these additionalsamples fail, the material represented by thetest samples shall be deemed as not complyingwith the standard. Theends shrill be cleanly cut and reasonably squarewith axis of the pipe. The tubes shall bereasonably straight.
Each lotshall be sampled separately and assessed forconformity to this specification. For export purposes the tubes may bepainted yellow or brown. Method BThe tube to be tested or the test coil assemblyis rotated and translated relative to each otherso the test coil describe a helical path over thetube surface.
The pitch of the helical scan shallensure that the whole of the tube surface iseffectively covered. This method is applicableto seamless tubes only. The test piecefor off-line equipment shall have similarelectromagnetic properties and same diameterand thickness as the tube to be tested.
Foronline equipment, running tube may heconsidered as standard tube. The diameter of thedrill required to make these holes shall be as7follows:Nominal Bor of Tubes Drill Dianwter.For welded tubes, the strip tensile test specimen shall not contain the weld.
Development of Draft Protocol for Testing of Structural Components and Systems
MTD 19 Table3, cof 6 Substitute Martin Lizarbe Williams. Benadict Joshua. Theends shrill be cleanly cut and reasonably squarewith axis of the pipe. Mark Chong.