1、 API 5L3 ,2014 -(API).-,-.API ,-.-API The present standard has been translated by PAO“TMK”with permission from The American Petroleum Institute(API).The translated version does not substitute or cancel the English ver-sion which is an official version.API decline all responsibility for any mistakes,
2、inconsistencies and incorrect interpretations that are caused by this translation.It is forbidden to make an-other translated version or reproduce the standard without the prior written consent of API.API .,-.API,API,-,-,-,.API,API ,.API .,;,-,-,.API ,.,;,-.,API -.API ,API.,API,.API ,API.,-,-,.:API,
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5、ification 5L .3 :D/t DWTT t T ts DWTT 4 4.1 4.1.1 ,-.4.1.2 16 30 (5 9/).4.1.3 ,-1/16 (1,59).-.4.1.4 5/8 (15,9).4.2 ,.200 (148-),.1 2 API 5L3 5 5.1 5.1.1 ,.5.1.2 D/t 40,.D/t 40,1 2 (25 51).,.,.,-,.5.1.3 ,-,1.,.1 API 5L3 3 5.2 5.2.1 .-,.-,7.1.a).,1,(-)452.-.,.b).90,-2,0.047 (1,2).-().-,1.2 4 API 5L3 5
6、.3 ,0.750 (19,0),.,0.750 (19,0),:(1);(2),0.750 (19,0).,1.,.1 ,(),F,()3/4-7/8(19,0 22,2)10(6)7/8 1 1/8(22,0 28,6)20(11)1 1/8 1 9/16(28,6 39,7)30(17)6 6.1 ,-2F(1),2.2 (ts)(),0.50(12,7)15 0.50 1.00(12,7 25,4)20 1.00 1.50(25,4 38,1)45 1 (25),.-,.,.6.2 ,10.,10.,.7 7.1 ,.-,.7.2 (,),-.,-.,-,.API 5L3 5 ,-.,
7、.(3.)B-B -,3 7.3 (ts)0.750 (19,0),-.6 API 5L3 (ts)0.750 (19,0),()0.750 (19,0).4 ,-.=0.750 (19,0)0.750 (19,0)4 ,7.4 ,5.,-.,5.1 .2 =0.750 (19,0)0.750 (19,0)5 -API 5L3 7 7.5 ,.a)-.b).c),.d),7.5 a,7.5 b 7.5 c,.8 API Specification 5L.-,:-;-;-0.005 (0,127);-;-,;-.8 API 5L3 ()(F)():=5/9(F 32)1 (in)=25,4 ()
8、1 (sq in.)=645,16 (.)1 (ft)=0,3048 ()1 (lb)=0,45359 ()1 (ppf)=1,4882 (/)1 (psi)=6,895 ()=0,006895 ()1-(ft-lb)=1,3558 ()API 5L3 9 ().1 DWTT .,-.,.-.2 ,.1 .,.1,.,100%45%,.:%=(2.8 2)34(2.8 2)100 ,;-,;:%=(71 2)34(71 2)100 ,;-,;.3 ,.2 .3 0.312 0.344 (7,9 8,7,).,-,45%100%.45%0%,.1,-.10 API 5L3 -100%-45%45%.1-DWTT API 5L3 11 B.2-0.312 (7,9)B.3-0.344 (8,7),(),()200 Massachusetts Avenue,NWSuite 1100Washington,DC 20001-5571USA202-682-8000 Techstreet 1-800-854-7179 ()303-397-7956 ()303-397-2740 ,API www.api.org G5L304R
