1、 . -i : CSA Standard Z245.3-M1979 Canadian Standards Association Low Strength Steel Line Pipe Smaller Than 457 mm in Diameter ISSN 0317-5669 Published, December, 1979 by the Canadian Standards Association (Incorporated 1919) 178 Rexdale Boulevard Rexdale, Ontario, Canada M9W 1R3 CSA Certification Th
2、e Canadian Standards Association provides certification services for manu facturers who, under licence from CSA, wish to use the appropriate registered CSA Marks on certain products of their manufacture to indicate conformity with a CSA Standard. CSA Certification for a number of pro ducts is provid
3、ed on a voluntary basis in the interest of maintaining agreed-upon standards of quality, performance, inter changeability, or safety and, where appropriate, it forms the basis for accep tance by inspection authorities respon sible for enforcement of regulations. Where feasible, programs will be deve
4、l oped for additional products for which certification is desired by producers, consumers, or other interests. Canadian Standards Association-1979 All rights reserved. No part of this publi cation may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permis
5、sion of the publisher. ;i1tlt; . .“. “:-., , , -; ., Page 5 7 8 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 11 12 12 12 12 12 17 17 17 17 17 18 18 18 18 19 19 Low Strength Steel Line Pipe Smaller Than 457 mm in Diameter Contents Technical Committee on Pipeline Materials Preface Reference Publications
6、 Standard 1. Scope 1.1 General 1.2 Classification 1.3 Grades 1.4 Reference Publications 2. General Requirements 2.1 General 2.2 Product Ordering Requirements 2.3 All Categories of Pipe 2.4 Specific Requirements 2.4.1 Category I 2.4.2 Category /I 2.4.3 Category /II 2.5 Sour Service 2.6 Weldability 3.
7、 Materials and Manufacture 4. Chemical Requirements 5. Mechanical Properties 5.1 General 5.2 Tensile Properties 5.2.1 Body Tensile Tests 5.2.2 Transverse Weld Tensile Tests for Pipe 219.1 mm 00 and Larger 5.3 Ductility Tests 5.3.1 General 5.3.2 Flattening Test 5.3.3 Guided-Bend Tests 5.3.4 Bend Test
8、s 6. Mill Hydrostatic Tests 7. Non-destructive Inspection 7.1 General 7.2 Methods of Inspection 8. Visual Inspection 9. Repair of Injurious Defects 3 4 CSA Standard Z24S.3-M1S7S 19 10. Notch Toughness 19 10.1 Category I Pipe 19 10.2 Category II Pipe 19 10.2.1 Fracture Appearance 19 10.2.2 Absorbed E
9、nergy 20 10.3 Category III Pipe 20 10.3.1 Absorbed Energy 20 10.4 Substitution of Charpy Subsize Test Specimens 20 11. Sour Service 20 11.1 General 20 11.2 Carbon Equivalent 20 11.3 Hardness 20 11.4 Maximum Yield Strength -.;-, Il“H . , . , .;.; : :.: .):“:. :;:., . . :/:.; q-:“ . j ! I , Low Streng
10、th Steel Line Pipe Smaller Than 457 mm in Diameter Technical Committee on Pipeline Materials R.E. Swanson (Chairman) Robert E. Swanson and Associates, Vancouver, British Columbia F.M. Christensen (Vice-Chairman) The Steel Company of Canada Limited, Hamilton, Ontario (Chairman, Subcommittee on Steel
11、Line Pipe) D.R. Bell Energy, Mines, and Resources Canada, Ottawa, Ontario W.T. Burness Union Gas Limited, Chatham, Ontario L.M. Etchegary TransCanada Pipelines. Toronto. Ontario G.C. Fillion The Algoma Steel Corporation Limited, Sault Ste. Marie, Ontario E.G. Fox Energy Resources Conservation Board,
12、 Calgary, Alberta P.C. Gardiner Ontario Ministry of Consumer and Commercial Relations, Toronto A. Hanson Hanson Materials Engineering Limited. Edmonton, Alberta F.Jeg/ic National Energy Board, Ottawa, Ontario J.A. Kavanagh Westcoast Transmission Company Limited, Vancouver, British Columbia C. Latrei
13、lle Regie de 1lectricite et du Gaz, Montreal, Quebec a.T. Linton Interprovincial Pipe Line Limited. Edmonton, Alberta A.M. McLean A. Murray McLean (b) The notch toughness testing procedures and acceptance criteria have been revised; (c) Clause 12, Supplementary Requirements, has been deleted. In the
14、 preparation of this Standard, extensive use was made of material published by the American Petroleum Institute. The Committee gratefully acknowledges the use of this material. This Standard was prepared by the Technical Committee on Pipeline Materials under the jurisdiction of the Standards Steerin
15、g Committee on Pipeline Systems and MaterialS and was formally approved by these Committees. Rexdale, December, 1979 Note: All enquiries regarding this Standard should be addressed to Canadian Standards Association, 178 Rexdale Boulevard, Rexdale, OntariO M9W 1 R3. GSA Standards are subject to perio
16、dical review and suggestions for their improvement will be directed to the appropriate committee. Requests for interpretation will also be accepted by the committee. They should be worded in such a manner as to permit a simple “yes“ or “no“ answer based on the literal text of the requirement concern
17、ed. Formal interpretations are published in “CSA Infor mation Update“ (for subscription details and a free sample copy, write to GSA Informa tion Gentral or telephone (416) 744-4128). . 8 CSA Standard Z245.3-M1979 Reference Publications This Publication refers to the following and the year dates sho
18、wn indicate the latest issues available at the time of printing: CSA Standards Z183-1977, Oil Pipeline Transportation Systems; Z184-M1979, Gas Pipeline Systems; CAN3-Z234.1-79, Canadian Metric Practice Guide; Z245.1-M1979, General Requirements for Plain-End Welded and Seamless Steel Line Pipe; ANSI/
19、ASTM* Standard E18-79, Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials. * American National Standards InstitutelAmerican Society for Testing and Materials. ,:(. Z245.3-M1979 Low Strength Steel Line Pipe Smaller Than 457 mm in Diameter 9 i;f:1,i. 1. Scope : :. 1.1 General 1
20、, I ! 1.2 1.3 This Standard covers plain-end welded and seamless steel line pipe smaller than 457 mm OD with a specified minimum yield strength of less than 359 MPa, intended to be used for the transportation of gases and liquids. Note: This Standard lists values in SI (metric) units and conforms to
21、 the requirements of CSA Standard CAN3-Z234.1, Canadian Metric Practice Guide. Classification -Pipe manufactured to this Standard and intended to be used in pipelines as specified in GSA Standard Z183, Oil Pipeline Transportation Systems, or GSA Standard Z184, Gas Pipeline Systems. is classified as
22、follows: (a) Category I-Intended for pipelines not requiring specific notch tough ness properties; (b) Category II-Intended for pipelines requiring specific notch toughness properties in the form of energy absorption and fracture appearance; (c) Category III-Intended for pipelines requiring specific
23、 notch toughness properties in the form of energy absorption. Grades This Standard covers the following five strength grades of pipe: (a) Grade 172; (b) Grade 207; (c) Grade 241; (d) Grade 290; and (e) Grade 317. Note: Because of different manufacturing methods for different sizes of pipe, it may no
24、t be possible to obtain all of the pipe diameters and thick nesses shown in Table 6.1 in all categories of pipe and all strength grades, particularly in the smaller sizes of the diameter range with heavier waif thicknesses. The individual pipe manufacturers should be consulted early in the design st
25、ages to ascertain the availability of a particular pipe size, cate gory, and grade. 1.4 Reference Publications 1.4.1 Where reference is made to other publications, such reference shall .be considered to refer to the latest edition and any revisions thereto approved b,y the organization issuing that
26、publication. 1.4.2 This Standard makes frequent reference to GSA Standard Z245.1, General Requirements for Plain-End Welded and Seamless Steel Line Pipe, which is hereinafter referred to as GSA Standard Z245.1. I t r 10 CSA Standard Z245.3-M1979 2. General Requirements 2.1 General Pipe furnished und
27、er this Standard shall conform to the applicable require ments of CSA Standard Z245.1, unless otherwise stated. 2.2 Product Ordering Requirements Orders for line pipe under this Standard shall include the applicable informa tion specified in Clause 2 of CSA Standard Z245.1. 2.3 All Categories of Pip
28、e In addition to the specific requirements of Clause 2.4, all categories of pipe shall meet the applicable requirements of Clauses 2 to 9 inclusive. 2.4 Specific Requirements 2.4.1 Category I Refer to Clause 10.1. 2.4.2 Category II Category II pipe shall meet the requirements of Clause 10.2. 2.4.3 C
29、ategory III Category III pipe shall meet the requirements of Clause 10.3. 2.5 Sour Service When pipe is produced for sour service the requirements of Clause 11 shall apply in addition to the applicable requirements of Clauses 2.4 and 5.3.1.2. 2.6 Weldability The general suitability of any steel for
30、use with various welding processes is dependent on the steel, the welding conditions, and the final use of the pipeline. Since line pipe meeting this Standard is primarily intended for field make-up by circumferential welding the pipe shall be weldable when welded in accordance with the requirements
31、 given in CSA Standard Z183, Oil Pipe line Transportation Systems, or CSA Standard Z184, Gas Pipeline Systems. 3. Materials and Manufacture 3.1 Pipe covered by this Standard may be produced by the seamless, butt-weld, submerged-arc, or electric-weld processes and shall be in conformance with the req
32、uirements of Clause 3 of CSA Standard Z245.1. 3.2 Pipe produced by the butt-weld process shall be supplied only in Grade 172. Grade 172 pipe shall be produced by the butt-weld process only. 3.3 The pipe may be supplied in the heat-treated condition and shall be identified in accordance with the requ
33、irements of Clause 12.2(i) of CSA Standard . Z245.1. 3.4 Except for Grades 172 and 207, the weld zone of electric-welded pipe shall receive a normalizing heat treatment, or a continuous in-line heat treatment, with a minimum temperature of 6200 C, which will control the structure so that the mechani
34、cal properties in the heat-affected zone shall approximate those of the parent material. The macrohardness of the heat-affected zone shall not exceed 22 HRC or equivalent as defined in ANSI/ASTM Standard Low Strength Steel Line Pipe Smaller Than 457 mm in Diameter 11 E18, Rockwell Hardness and Rockw
35、ell Superficial Hardness of Metallic Materials. 3.5 Pipe supplied under this Standard shall be made from open hearth, electric furnace, or basiC oxygen practice steel. If requested by the purchaser the type of deoxidation process used shall be reported by the manufacturer. 3.6 The use of multiple lo
36、ngitudinally slit rimmed steel is not permissible. 4. Chemical Requirements 4.1 The material shall conform by ladle and check analyses to the requirements of Table 4.1 when tested in accordance with the requirements of Clause4 and 5 of CSA Standard Z245.1. Table 4.1 Chemical Composition Limits for H
37、eat and Product Analyses Grades All Grades Element Carbon Manganese Phosphorus Sulphur Silicon Columbium Vanadium Titanium Grades 290 and 317. Noles: C.E. = Maximum Carbon Equivalent 0.44 The carbon equivalent shall be determined by the following formula: C Mn Cr+ Mo+ V Ni + Cu + + + 6 5 , 15 Percen
38、tage Minimum Maximum - 0.26 0.30 - 0.04 - 0.04 - 0.50 - 0.11 - 0.11 - 0.06 (1) The maximum content of manganese, copper, chromium, nickel, molyb denum and other elements not listed may be subject to agreement between the manufacturer and the purchaser. (2) Because of the rapidly changing pipe and st
39、eelmaking technology, material meeting the mechanical properties required in this Standard, but deviating from the chemical composition and the carbon equivalent formula in Table 4.1 may be accepted subject to agreement between the manufac turer and the purchaser. (3) Rimmed or capped steels are cha
40、racterized by a lack of uniformity in their chemical composition, and for this reason, product analysis is not technologically appropriate unless misapplication of the grade or type of steel by the manufacturer is clearly indicated. Table 4. 1 applies only to heat analysis for these types of steel.
41、12 CSA Standard Z245.3-M1979 4.2 Except for butt-welded pipe, the product analyses shall be made at the frequency stipulated in Table 5.3. For butt-welded pipe the product analyses shall be made on one length of pipe from each lot of 400 lengths of each size pipe. . 4.3 When so specified in the pipe
42、 purchase order or contract, the pipe manufac turer shall report the heat analysis or the product analysis, or both, for each heat of steel used. The analyses reported shall include the percentages of carbon, manganese, phosphorus, SUlphur, silicon (if added) and any alloying elements used for other
43、 than deoxidation. Note: The heat analysis is made by the steel producer from a test sample(s) taken during the pouring of the heat. The product analysis is made by the pipe producer from samples taken from the skeJp, from test coupons repres enting the finished pipe, or from the finished pipe. 4.4
44、If the residual quantities of the following elements exceed the indicated percentages, they shall be reported in the heat and product analyses and the percentages of the applicable elements shall be included in the carbon equivalent formula given in Table 4.1. Chromium 0.10 per cent Molybdenum. 0.02
45、 per cent Copper . . . . . 0.15 per cent Boron 0.001 per cent Nickel . 0.15 per cent Tin 0.02 per cent 5. Mechanical Properties 5.1 General 5.2 5.2.1 5.2.1.1 5.2.1.2 5.2.2 5.2.2.1 5.2.2.2 5.2.2.3 The mechanical properties shall be determined in accordance with the procedures given in Clause 6 of CSA
46、 Standard 2245.1. Tensile Properties Body Tensile Tests The tensile properties of the finished pipe shall conform to the requirements of Table 5.1 and shall be determined on transverse body test specimens for welded pipe 219.1 mm OD and larger, on either transverse or longitudinal body test specimen
47、s for seamless pipe 219.1 mm OD and larger, and on longitudinal body test specimens for all pipe smaller than 219.1 mm OD. Except for butt-welded pipe. tensile tests shall be made at the frequency stipulated in Table 5.3. For butt-welded pipe, one longitudinal test shall be made on a length of pipe
48、from each lot of 400 lengths. Transverse Weld Tensile Tests for Pipe 219.1 mm 00 and Larger The tensile strength of transverse weld test specimels shall conform to the requirements of Table 5.1. For longitudinal or spiral welds. transverse weld tests shall be made at the frequency stipulated in Tabl
49、e 5.3. For skelp end welds, transverse weld tests shall be made at the frequency of one test per lot of 100 lengths containing skelp end welds. -_.-“ . Low Strength Steel Line Pipe Smaller Than 457 mm in Diameter Grade 172 207 241 290 317 Yield Strength Table 5.1 Tensile Requirements * Tensile Strength Minimum. MPa Minimum. MPa 172 310 207 331 241 414 290 414 317 434 13 Minimum Per Cent Elongation in 50.8 mm See Note and Table 5.2 * The tensile requirements for intermediate grades shall be consistent with those specified for standard
