ASTM D6396-1999(2005) Standard Test Method for Testing of Pipe Thread Sealants on Pipe Tees《测试T形管上管螺纹密封层的标准试验方法》.pdf
《ASTM D6396-1999(2005) Standard Test Method for Testing of Pipe Thread Sealants on Pipe Tees《测试T形管上管螺纹密封层的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6396-1999(2005) Standard Test Method for Testing of Pipe Thread Sealants on Pipe Tees《测试T形管上管螺纹密封层的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 6396 99 (Reapproved 2005)Standard Test Method forTesting of Pipe Thread Sealants on Pipe Tees1This standard is issued under the fixed designation D 6396; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures used to assemble,evaluate and test pipe thread sealants.1.2 Test procedures included
3、 in this test method are curespeed versus temperature, primer cure, instant seal/sealability,heat aging, solvent resistance, hot strength, steam resistance,and specimen preparation for high pressure testing.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given
4、 in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory
5、limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 907 Terminology of AdhesivesD 1599 Test Method for Resistance to Short-Time Hydrau-lic Pressure of Plastic Pipe, Tubing, and Fittings3. Terminology3.1 DefinitionsMany of the terms in this test method aredefined in Terminology D 90
6、7.3.2 Definitions of Terms Specific to This Standard:3.2.1 removal torque, nthe torque required to unseat aninstalled pipe plug from a pipe tee.4. Summary of Test Method4.1 Pipe tee and plug fittings, assembled with the sealantunder test, are subjected to a variety of conditions and testedfor sealab
7、ility and removal torque,12 in. cap, coupling andnipple assemblies are prepared with the sealant under test forhigh pressure testing (typically 10 000 psi).5. Significance and Use5.1 Many of the tests that have been employed in the past toevaluate thread sealant products have not consistently target
8、edthe most significant product features of a thread sealant. Forinstance, one of a thread sealants primary performance fea-tures is its ability to maintain a seal under a range ofconditions. The procedures in this test method assess theimportant characteristic properties of a thread sealant.5.2 Beca
9、use of the variability of the test specimens and thetechniques employed by each operator, the assembly and testprocedures and the testing apparatus have been designed toreduce the variability of the test results.6. Apparatus6.1 Torque Testing Device, of suitable capacity, for testingassemblies.NOTE
10、1Using automated torque testers to test the assemblies gener-ally produces more reproducible results.6.2 Torque Wrench, of suitable capacity, for providinginstallation torque.6.3 Pipe Tee Assembly Block,38 in. (10 mm), as shown inFig. 1, or equivalent.6.4 Pipe Tee Torque Test Block,38 in. (10 mm), a
11、s shown inFig. 2, or equivalent.NOTE 2The pipe tee torque test block is designed to fit an automatedtorque tester, but it can also be used in a vise with a torque wrench.6.5 Pipe Tee Sealability Test Clamp, as shown in Fig. 3.6.6 Temperature Chamber.6.7 Pressurized Pots, for solvent resistance and s
12、team resis-tance testing.7. Test Specimen7.1 Malleable Iron Pipe Tees,38 in. (10 mm).7.2 Forged Steel Pipe Plugs,38 in. (10 mm).7.3 Stainless Steel Pipe Tees,38 in. (10 mm), 304SS.7.4 Stainless Steel Pipe Plugs,38 in. (10 mm), 304SS.7.5 Brass Pipe Tees,38 in. (10 mm).7.6 Brass Pipe Plugs,38 in. (10
13、mm).7.7 Malleable Iron Pipe Tees,12 in. (13 mm), Class 300.7.8 Forged Steel Pipe Plugs,12 in. (13 mm)7.9 Hex Reducing Coupling,12 in. (13 mm) FNPT by18 in.(3 mm) FNPT, 316 stainless steel.1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility o
14、f Subcommittee D14.80 on MetalBonding Adhesives.Current edition approved April 1, 2005. Published April 2005. Originallyapproved in 1999. Last previous edition approved in 1999 as D 6396 99.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servi
15、ceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.10 Cap,12 in. (13 mm) pipe cap.7.11 Hex Long Nipple, 3
16、16SS.8. Assembly8.1 Assemble not less than three assemblies for each test.8.2 Degrease all pipe tees and plugs. Allow specimens tocool to room temperature prior to sealant application.8.3 Apply sealant as follows:8.3.1 Apply sealant uniformly to the second through thesixth threads of the male fittin
17、g for each test joint.8.3.2 Ensure that the average height of the sealant reachesthe thread crown (major diameter), and that the sealantcompletely wets the thread roots.8.3.3 Note any separation or visible defects with the prod-ucts. Also note any problems with wettability or excessiverunning due to
18、 low viscosity or a low thixotropy level.8.4 Assemble test specimens as follows:8.4.1 Using a torque wrench and the pipe tee assemblyblock fixture, install two sealant coated pipe plugs for eachpipe tee. Install with the application of 240 in.lbs (27.1 Nm)of torque.8.4.2 Remove excess sealant to avo
19、id excess specimenweight loss that may be caused by charred sealant flaking offduring initial heat exposure and in steam resistance tests.9. Procedure9.1 Cure Speed Versus Temperature:9.1.1 Use38 in. (10 mm) pipe tees and plugs.9.1.2 Condition pipe tees and plugs in a temperature cham-ber at the cur
20、e temperature specified by the adhesive manufac-turer for a minimum of 2 h.NOTE 3A temperature chamber is not needed for conditioning speci-mens for curing at room temperature.9.1.3 Remove the specimens from the temperature chamber,and immediately apply the sealant, which has been held atroom temper
21、ature, in accordance with 8.3, and assemble thespecimens in accordance with 8.4.9.1.4 Cure the assemblies for the time and at the tempera-ture specified by the adhesive manufacturer.9.1.5 After the specified cure time period, determine re-moval torques for each assembly using the pipe tee torque tes
22、tFIG. 138 Pipe Tee Assembly BlockD 6396 99 (2005)2block fixture, within 30 s of removal from the temperaturechamber. Record the results.9.2 Primer Cure:9.2.1 Use38 in. (10 mm) pipe tees and plugs.9.2.2 Apply the primer specified by the adhesive manufac-turer to the plugs and allow them to dry vertic
23、ally until all thesolvent has evaporated.9.2.3 Apply the sealant in accordance with 8.3. Within 30 sof sealant application assemble the specimens in accordancewith 8.4.9.2.4 Cure the assemblies for the times specified by theadhesive manufacturer.9.2.5 At the end of each specified cure time, test eac
24、hassembly for sealability in accordance with 9.9.9.2.6 Determine removal torques for each assembly usingthe pipe tee torque test block fixture. Record the results.9.3 Heat Aging:9.3.1 Use38 in. (10 mm) pipe tees and plugs.9.3.2 Apply the sealant in accordance with 8.3, and as-semble the specimens in
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