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14 >himkdb gZgZjm`guc ^bZf_lj mly`_ezgguo[mjbevguo
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23 >himkdb gZZefZagu_ ^hehlZ^eykiehrgh]hbdhehgdh\h]h[mj_gbyb^hehlZ
bfij_]gbjh\Zggu_ ihebdjbklZeebq_kdbfb ZefZaZfb JDK 62
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26 JZaf_juj_av[ujhlhjguokh_^bg_gbc kaZie_qbdZfb 66
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29 >himkdb gZjZaf_juh[jZaph\uo dhgljhevguodZeb[jh\ 83
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F-1 Kh_^bg_gbyih^ghf_jZfbghf_jgu_ 102
F-2 GhjfZevgu_ ijZ\u_R?G RG 102
F-3 GhjfZevgu_ e_\u_R?G LG 103
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28 JZaf_juj_av[h\uodZeb[jh\ ^eyjhlhjguokh_^bg_gbc k
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29 >himkdb gZjZaf_juwlZehgguodhgljhevguodZeb[jh\ 134
30 >himkdbgZjZaf_ju]eZ\guobj_]bhgZevguodhgljhevguo
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31 >himkdb gZjZaf_jujZ[hqbodZeb[jh\ 135
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4
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5
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7
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8
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12
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1 3/1 6 ^ h e ` g h [ u l v i h \ u [ h j m a Z d Z a q b d Z K f i j b f _ q Z g b _
/2 (12,7 ff3 R (76,2 ff
/2 (12,7 ff2 R (50,8 ff
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API SPEC 7:1997
18
LZ[ebpZDZeb[j\lmedZ^ey\_^msbo[mjbevguoljm[
JZkklhygb_f_`^m]jZgyfb FZdkbfZevgucjZ^bmkkdjm]e_gby
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5/16
3/16
31/2 10 3.594 3.536
7/16
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41/4 12 4.375 4.286
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1/4
51/4 12 5.375 5.286
9/16
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6 12 6.036 5/16
I JB F ? Q: G B Y K f j b k < k _ j Z a f _ j u \ ^ x c f Z o K f I j b e h ` _ g b _ F i h \ h i j h k m f _ l j b q _ k d b o l Z [ e b p > h i m k d g Z ' F L i j b \ k _ o j Z a f _ j Z o > h i m k d g Z g h f b g Z e v g u _ \ g m l j _ g g b _ m ] e u f _ ` ^ m i e h k d h k l y f b 0 , 3 0 .
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I JB F ? Q: G B Y F _ o Z g b q _ k d b _ k \ h c k l \ Z ^ h e ` g u h i j _ ^ _ e y l v k y i j b b k i u l Z g b y o g Z j Z k l y ` _ g b _ p b e b g ^ j b q _ k d b o h [ j Z a p h \ \k h h l \ _ l k l \ b b k ^ _ c k l \ m x s b f k l Z g ^ Z j l h f $ 6 7 0 : i h f _ l h ^ m h k l Z l h q g h c ^ _ n h j f Z p b b i j b b k i h e v a h \ Z g b bi j _ ^ i h q l b l _ e v g h h [ j Z a p h \ ^ b Z f _ l j h f ^ x c f Z b h [ j Z a p h \ ^ b Z f _ l j h f ^ x c f Z b ^ x c f Z \ k e m q Z _l h g d b o k _ q _ g b c H [ j Z a p u ^ e y b k i u l Z g b c g Z j Z k l y ` _ g b _ f Z l _ j b Z e Z \ _ ^ m s b o [ m j b e v g u o l j m [ k e _ ^ m _ l h l [ b j Z l v b a g b ` g _ c \ u k Z ^ d b\ i j h ^ h e v g h f g Z i j Z \ e _ g b b i j b j Z k i h e h ` _ g b b p _ g l j Z e v g h c e b g b b h [ j Z a p Z g Z j Z k l y ` _ g b _ g Z j Z k k l h y g b b ^ x c f h lg Z j m ` g h c i h \ _ j o g h k l b b e b i h k _ j _ ^ b g _ k _ q _ g b y k f h l j y q l h f _ g v r _ I j h \ _ ^ _ g b _ b k i u l Z g b c g Z j Z k l y ` _ g b _ g Z \ _ j o g _ c \ u k Z ^ d _ g _ y \ e y _ l k y g _ h [ o h ^ b f u f b e b p _ e _ k h h [ j Z a g u f F b g b f Z e v g h _ a g Z q _ g b _ l \ _ j ^ h k l b i h ; j b g _ e e x y \ e y _ l k y ^ h k l Z l h q g u f k \ b ^ _ l _ e v k l \ h f m ^ h \ e _ l \ h j b l _ e v g h k l bf _ o Z g b q _ k d b o o Z j Z d l _ j b k l b d B k i u l Z g b y g Z l \ _ j ^ h k l v ^ h e ` g u i j h \ h ^ b l v k y g Z g Z j m ` g h f ^ b Z f _ l j _ \ _ j o g _ c\ u k Z ^ d b f _ l h ^ h f ; j b g _ e e y i j b _ f e _ f u f Z e v l _ j g Z l b \ g u f f _ l h ^ h f y \ e y _ l k y b a f _ j _ g b _ i h J h d \ _ e e m K ) ,k h h l \ _ l k l \ m x s b f ^ _ c k l \ m x s _ f m k l Z g ^ Z j l m $ 6 7 0 :
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API SPEC 7:1997
19
;mjbevgu_aZfdb
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API SPEC 7:1997
20
y\ey_lky ^hklZlhqguf k\b^_l_evkl\hf m^h\e_l\hjbl_evguo
f_oZgbq_kdbo k\hckl\ BkiulZgby gZ l\_j^hklv ke_^m_l ijh\h^blv \
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API SPEC 7:1997
21
gZ lj_[h\Zgbyo d ij_^_em ijhqghklb gZ jZkly`_gb_ Z g_ gZ
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JZaf_j dmdZaZgguc \lZ[eg_ijbf_gy_lky daZfdh\uf fmnlZf
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API SPEC 7:1997
22
JZaf_ju iZjlbb y\eyxlky hkgh\hc ^ey hij_^_e_gby qZklhlu bkiulZgbc
k\Zjgh]hr\Z
j_]bkljZpby d\ZebnbdZpbhgghc ijhp_^mju 345
hnbpbZevguc ibkvf_gguc ^hdmf_gl m^hklh\_jyxsbc qlh ^Zggu_
l_ogbq_kdb_ mkeh\by k\Zjhqghc l_ogheh]bb :36 m^h\e_l\hjyxl
lj_[h\Zgbyf gZklhysbo l_ogbq_kdbo mkeh\bc Wlhl ^hdmf_gl kh^_j`bl
^Zggu_ h k\Zjd_ [mjbevgh]h maeZ b j_amevlZlu bkiulZgbc h[jZaph\
hlh[jZgguobabkiulu\Z_fh]h k\Zjgh]hkh_^bg_gby
i_j_f_ggu_kms_kl\_ggu_ i_j_f_ggu_ iZjZf_lju baf_g_gb_
dhlhjuo \eby_l gZ f_oZgbq_kdb_ k\hckl\Z k\Zjguo kh_^bg_gbc
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d\ZebnbdZpbhgghc hp_gdb l_ogbq_kdbo mkeh\bc k\Zjhqghc l_ogheh]bb
(WPS).
i_j_f_ggu_ g_kms_kl\_ggu_ i_j_f_ggu_ iZjZf_lju
baf_g_gb_ dhlhjuo g_ lj_[m_l ih\lhjghc d\ZebnbdZpbhgghc hp_gdb
l_ogbq_kdbo mkeh\bck\Zjhqghcl_ogheh]bb:36
d\ZebnbdZpbhggZy hp_gdZ jZ[hlu k\ZjsbdZ :34
hnbpbZevguc ^hdmf_gl m^hklh\_jyxsbc qlh hi_jZlhj k\Zjhqghc
fZrbgu ijh^_fhgkljbjh\Ze kihkh[ghklv ijbf_gylv l_ogbq_kdb_
mkeh\by k\Zjhqghc l_ogheh]bb :36 ^ey ijhba\h^kl\Z k\Zjguo
kh_^bg_gbc m^h\e_l\hjyxsbo lj_[h\Zgbyf gZklhysbo l_ogbq_kdbo
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hnbpbZevgh baeh`_ggZy l_ogheh]by ih^]hlh\e_ggZy ^ey jmdh\h^kl\Z
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gZklhysbo l_ogbq_kdbo mkeh\bc Wlhl ^hdmf_gl ^he`_g \dexqZlv \k_
kms_kl\_ggu_ b g_kms_kl\_ggu_ iZjZf_lju ijb k\Zjd_ [mjbevguo
aZfdh\ b [mjbevguo ljm[ L_ogbq_kdb_ mkeh\by:36 ijbf_gyxlky dh\k_f k\Zjguf r\Zf dZ`^uc we_f_gl dhlhjuo bf__l lZdb_ `_
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API SPEC 7:1997
23
mklZgh\e_ggu_ ghfbgZevgu_ jZaf_ju b lZdhc `_ obfbq_kdbc khklZ\
dZdb_ khhl\_lkl\mxl hij_^_e_gghc ]jmii_ kh]eZkgh ^hdmf_glm qlh
]ZjZglbjm_l ij_^kdZam_fuc j_amevlZl ijb l_jfhh[jZ[hld_ ahgu k\Zjdb
dhgdj_lghcfZjdb
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API SPEC 7:1997
24
LZ[ebpZJZaf_ju[mjbevguoaZfdh\^eyfZjhd[mjbevguoljm[
(;*b6
1 2 3 4 5 6 7 8 9 10 11 12 13 14
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3/8 13/4 3
17/64 10 7 8 15 29/16 2
9/16 1.10
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17/64 10 7 8 15 29/16 2
9/16 0.87
G105 33/8 13/4 3
17/64 10 7 8 15 29/16 2
9/16 0.79
NC31 (27/8 IF) 27/8.EU 10.40 E75 4
1/8 21/8 3
61/64 101/2 7 9 16 3
3/16 33/16 1.03
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1/2 7 9 16 33/16 3
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1/2 7 9 16 33/16 3
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61/64 101/2 7 9 16 3
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NC38d 31/2 EU 9.50 E75 43/4 3 4
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NC38 (31/2 IF) 31/2 EU 13.30 E75 4
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37/64 12 8 l01/2 l8
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15.50 E75 5 29/16 437/64 12 8 l0
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1/2 l81/2 3
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G105 5 21/8 437/64 12 8 l0
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NC40(4 FH) 31/2 EU 15.50 S135 51/2 2
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4 IU 14.00 E75 51/4 213/16 5
1/64 111/2 7 10 17 4
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G105 51/2 27/16 51/64 111/2 7 10 17 43/16 43/16 0.93S135 51/2 2 5
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41/2 IU 13.75 E75 6 33/8 5
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11/16 411/16 1.20
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41/2 EU 16.60 E75 65/8 3
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1/2 7 10 17 5 5 1.23
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IJBF?Q:GBYKfjbkbZf_ljur_cdb\ukZ^db (DPEb'TEb\gmlj_ggbc^bZf_ljG[mjbevguoaZfdh\i_j_^k\Zjdhchij_^_eyxlkyba]hlh\bl_e_fLZ[ebpZ\ur_mklZgZ\eb\Z_ljZaf_juihke_hdhgqZl_evghcf_oZgbq_kdhch[jZ[hldbdhgkljmdpbb
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API SPEC 7:1997
25
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5 IEU 19.50 E75 65/8 33/4 6
1/16 111/2 7 10 17 5
1/8 51/8 0.92
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5 IEU 25.60 E75 65/8 31/2 6
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51/2FH 5 IEU 19.50 E75 7 33/4 6
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1/8 51/8 1.21
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65/8 FH 65/8 IEU 25.20 E75 8 5 7
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15/16 1.04
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15/16 0.82
G105 81/4 43/4 7
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15/16 0.87
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15/16 0.86
6
5
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G105 81/4 43/4 7
45/64 13 8 11 19 615/16 6
15/16 0.81
S135 81/2 41/4 7
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26
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27
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API SPEC 7:1997
31
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API SPEC 7:1997
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API SPEC 7:1997
33
ihdZaZgbx ijb[hjZ ^ey baf_j_gby iZjZee_evghc g_khhkghklb b
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API SPEC 7:1997
34
l_q_gb_ jZ[hq_c kf_gu H[hjm^h\Zgb_ ^he`gh [ulv ohjhrh
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API SPEC 7:1997
35
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API SPEC 7:1997
36
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API SPEC 7:1997
37
JbkWlZehg
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API SPEC 7:1997
38
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39
khhl\_lkl\h\Zlv ijbf_gy_fuf jZaf_jZf lbiZf qbkeh\uf jZaf_jZf b
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API SPEC 7:1997
40
ih^t_fgbdZ DL^eydhgmkguo aZie_qbdh\ mdZaZgu \lZ[e
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F_oZgbq_kdb_ k\hckl\Z \k_o i_j_\h^gbdh\ ^he`gu
khhl\_lkl\h\Zlv lj_[h\Zgbyf d fZl_jbZem mly`_e_gguo [mjbevguo
ljm[mdZaZgguf \JZa^_e_Baf_j_gbyih\_joghklghcl\_j^hklbihke_ba]hlh\e_gby gZ ^bZf_lj_ DR i_j_\h^gbdh\ lbiZ
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Oheh^gZyh[jZ[hldZ\iZ^bgj_av[u
Oheh^gZy h[jZ[hldZ \iZ^bg j_av[u ijhba\h^blky ih j_r_gbx
ba]hlh\bl_eyIh^jh[gu_k\_^_gbykh^_j`Zlky\JZa^_e_
FZjdbjh\dZ
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l_ogbq_kdbfb mkeh\byfb ^he`gu bf_lv fZjdbjh\dm \dexqZxsmx bfy
ba]hlh\bl_ey beb fZjdm 6SHF\gmlj_ggbc ^bZf_lj Z lZd`_ jZaf_j
b lbi kh_^bg_gby gZ dZ`^hf dhgp_ FZjdbjh\dZ ^he`gZ [ulv
ijhba\_^_gZ de_cf_gb_f rlZfihf \ m]em[e_gbb jZkiheh`_gghf gZ
^bZf_lj_ D i_j_\h^gbdZ FZjdbjh\db mdZau\Zxsb_ lbi b jZaf_j
kh_^bg_gby ke_^m_l ihf_sZlv gZ dhgp_ \ulhqdb gZb[he__ [ebadhf d
kh_^bg_gbxddhlhjhfm hgbhlghkylky
Gb`_ijb\_^_gu^\Zijbf_jZ
Z I_j_\h^gbd k GHJF:EVGUF E?
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API SPEC 7:1997
42
LZ[ebpZI_j_\h^gbdb[mjbevguodhehgg1 2 3 4
Lbi DeZkkbZf_ljdhgmkgh]haZie_qbdZ 1/8 , -0)DP DL
23/8 3
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27/8 4
1/8
31/2 4
3/4
4 6
41/2 61/45 6
1/2
51/2 7
65/8 8
IJBF?Q:GB?
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API SPEC 7:1997
43
JbkI_j_\h^gbdb[mjbevguodhehgg
Jbk
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API SPEC 7:1997
44
LZ[ebpZjm]b_ihimeyjgu_kh_^bg_gby
>bZf_lj
deZiZgZ\k[hj_
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(D, +1/32) L JZaf_j A, 1/16 JZaf_j A,
1/16
121/32 111/16 5
7/8 23/8 9
1/8 NC23 91/8
129/32 115/16 6
1/4 27/8 10 2
3/8 IF 91/2
213/32 2
7/16 6
1/2 3
1/2 lO
1/2 2
7/8 IF 10
1/4
213/16 227/32 10 3
1/2 FH . 14
31/8 35/32 10 3
1/2 IF 141/4
315/32 3
1/2 8
5/16 4
1/2 12
13/16 NC44 13
1/16
321/32 311/16 12 4 IF 13
1/4
37/8 329/32 9
3/4 51/2 14
3/4 41/2 IF 14
1/2
425/32 4
13/16 11
3/4 6
5/8 17 5
1/2 IF 17
75/8 171/4 5
1/2 FH 17
85/8 173/8 NC61 17
1/4
511/16 523/32 14
5/8 85/8 20
1/4 65/8 IF 19
7/8
IJBF?Q:GB?
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API SPEC 7:1997
45
Mly`_e_ggu_[mjbevgu_ljm[u
H[sb_iheh`_gby
JZaf_juMly`_e_ggu_ [mjbevgu_ ljm[u ^he`gu ihklZ\eylvky ijb
jZaf_jZomdZaZgguo \lZ[ebijb^himkdZo mklZgh\e_gguo\
Hl\_jklby
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API SPEC 7:1997
46
\iehlgmx d ih\_joghklb ljm[u [he__ q_f gZ 1/160 ^xcfZ gZ nml
fbeebf_ljZ gZf_lj^ebguljm[u
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f_ljh\fZdkbfZevgh_ hldehg_gb_ hlijyfhc ebgbb jZ\gh 1/160 =
3/16^xcfZfbeebf_ljZ
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mdZaZgguf \ lZ[e b gZ jbk beb \ lZ[e b gZ jbk
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kh_^bg_gbyo
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bkiulZgby ijb nZdlbq_kdbo mkeh\byo wdkiemZlZpbb ihdZaZeb
[eZ]hijbylgu_ ^_ckl\by kgbfZxsbo gZijy`_gb_ we_f_glh\ ijb
jZaf_s_gbb bo gZ aZie_qbdZo gbii_evguo kh_^bg_gbc b m hkgh\Zgby
j_av[u fmnlu
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47
^he`gu[ulv lZd`_fZjdbjh\Zgu agZdhf &: aZdexq_gguf \djm`hd
qlh ihdZau\Z_l ijh\_^_gb_ oheh^ghc h[jZ[hldb ihke_ dhgljhevguo
baf_j_gbc WlhlagZd ^he`_g [ulv jZaf_s_ggZkh_^bg_gbb ke_^mxsbf
h[jZahf
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kh_^bg_gbyo j_dhf_g^m_lky ijbf_g_gb_ we_f_glh\ lbiZ h[jZlghc
jZklhqdb H^gZdh [ueh mklZgh\e_gh qlh ihdZaZggZy gZjbk dZgZ\dZ
^ey kgylby gZijy`_gbc gZ fmnlh\hf kh_^bg_gbb lZd`_ hdZau\Z_l
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48
lj_[h\ZgbyflZ[e
Wlb k\hckl\Z ke_^m_l ijh\_jylv k ihfhsvx bkiulZgbc gZ
jZkly`_gb_ h^gh]h h[jZapZ bf_xs_]h k\hckl\Zj_ij_a_glZlb\gu_ ^ey
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[mjbevguo ljm[ khhl\_lkl\mxsbo ^Zgguf l_ogbq_kdbf mkeh\byf
^he`gh [ulv kihkh[hf rlZfih\db gZg_k_gh de_cfh k mdZaZgb_f bf_gb
ba]hlh\bl_ey beb fZjdb 6SHF gZjm`gh]h ^bZf_ljZ b h[hagZq_gby
kh_^bg_gbcLbikh_^bg_gbc 1& bjZaf_ju)+ b,)\kdh[dZo \dhehgd_
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Z GZ mly`_e_gghc [mjbevghc ljm[_ 1/4 ^xcfZ k hl\_jklb_f 13
/16
^xcfZ bkh_^bg_gbyfb 1&^he`gh [ulv hlrlZfih\Zgh
$%&RbebfZjdZ
NC46-62 (4IF) 213
/16 SPEC7
LZdZy `_ fZjdbjh\dZ gZghkblky gZ mly`_e_ggu_ [mjbevgu_ ljm[u
bf_xsb_ lZdb_ `_jZaf_ju gh aZdZaZggu_ k kh_^bg_gbyfb ,) _kebkh_^bg_gby\uiheg_guknhjfhc j_av[u95
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^xcfZ bkh_^bg_gbyfb 5/85(*^he`gh [ulvhlrlZfih\Zgh
$%&RbebfZjdZ
81/4 2
13/16 6
5/8 REG SPEC7
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49
LZ[ebpZMly`_e_ggu_[mjbevgu_ljm[u
1 2 3 4 5 6
Ghf_jmly`_e_gghc[mjbevghcljm[uZ
GZjm`guc^bZf_ljD b
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>ebgZnmlh\^xcfh\L
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NC23-31 31/8 11/4 30 3 2.57:1
NC26-35 (23/8 IF) 31/2 11/2 30 317/64 2.42:1
NC31-41(27/8IF) 41/8 2 30beb31 3
61/64 2.43:1
NC35-47 43/4 2 30 beb 31 433/64 2.58:1
NC38-50 (31/2 IF) 5 21/4 beb 4
49/64 2.38:1
NC44-60 6 21/4 beb 511/16 2.49:1
NC44-60 6 213/16 beb 511/16 2.84:1
NC44-62 61/4 21/4 beb 5
7/8 2.91:1
NC46-62 (4 IF) 61/4 213/16 beb 5
29/32 2.63:1
NC46-65 (4 IF) 61/2 21/4 beb 6
3/32 2.76:1
NC46-65 (4 IF) 61/2 213/16 beb 6
3/32 3.05:1
NC46-67 (4 IF) 63/4 21/4 beb 6
9/32 3.18:1
NC50-70 (41/2 IF) 7 21/4 beb 6
31/64 2.54:1
NC50-70 (41/2 IF) 7 213/16 beb 6
31/64 2.73:1
NC50-72 (41/2 IF) 71/4 2
13/16 beb 643/64 3.12:1
NC56-77 73/4 213/16 beb 7
19/64 2.70:1
NC56-80 8 213/16 beb 731/64 3.02:1
65/8 REG 81/4 2
13/16 beb 745/64 2.93:1
NC61-90 9 213/16 beb 83/8 3.17:1
75/8 REG 91/2 3 beb 8
13/16 2.81:1
NC70-97 93/4 3 beb 95/32 2.57:1
NC70-100 10 3 beb 911/32 2.81:185/8 REG
k 11 3 beb 101/2 2.84:1
IJBF?Q:GBYKfjbkhimkdgZjZaf_j\dexqbl_evghK\ur_ Hldehg_gb_hldjm]ehklbZ
JZaf_jGZjm`guc^bZf_lj >xcf ff >h >xcf ff
K\ur_1/2^h1/2\dexqbl_evgh
3/64 1.19 0 0.035 0.89
K\ur_1/2^h1/2\dexqbl_evgh
1/16 1.59 0 0.046 1.17
K\ur_1/2^h1/2\dexqbl_evgh
5/64 1.98 0 0.058 1.47
K\ur_1/2^h1/2\dexqbl_evgh
1/8 3.18 0 0.070 1.78
K\ur_1/2^h1/4\dexqbl_evgh
5/32 3.97 0 0.085 2.16
K\ur_1/4^h1/2\dexqbl_evgh
3/16 4.76 0 0.100 2.54
K\ur_1/21/4 6.35 0 0.120 3.05
ZHldehg_gb_hldjm]ehklbij_^klZ\ey_lkh[hcjZagbpmf_`^mfZdkbfZevgufbfbgbfZevguf^bZf_ljZfbijmldZijbbaf_j_gbb\h^ghfblhf`_k_q_gbbbg_\dexqZ_l^himkdbgZhdhgqZl_evgmxh[jZ[hldmih\_joghklbjZkkfZljb\Z_fu_\
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50
G_fZ]gblgu_mly`_e_ggu_[mjbevgu_ljm[u
JZaf_jgu_iZjZf_lju
G_fZ]gblgu_ mly`_e_ggu_ [mjbevgu_ ljm[u ^he`gu ihklZ\eylvky
ijb jZaf_jguo iZjZf_ljZo khhl\_lkl\mxsbo mdZaZgguf \
JZaf_ju Hl\_jklby Kh_^bg_gby >himkdb gZ
gZjm`guc ^bZf_lj We_f_glu ^ey kgylby gZijy`_gbc ijb
bkdexq_gbyo i_j_qbke_gguo \imgdlZohl^h
>himkdbgZ^ebgm
>himkdb gZ ^ebgm ^ey g_fZ]gblguo mly`_e_gguo [mjbevguo ljm[
^he`gu [ulv ke_^mxsbfb^xcfh\ fbeebf_ljh\
Wdkp_gljbkbl_lhl\_jklbc
FZdkbfZevguc wdkp_gljbkbl_l hl\_jklbc ^he`_g khklZ\eylv
^xcfZ fbeebf_ljZ gZ dhgpZo ljm[u P_gljZevguc
wdkp_gljbkbl_l g_^he`_gij_\urZlv^xcfZfbeebf_ljZ
IJBF?Q:GB? P_evx l_ogbq_kdbo mkeh\bc gZ p_gljg_fZ]gblguo mly`_e_gguo [mjbevguo ljm[ y\ey_lky ]ZjZglbjh\Zgb_
lhqghc khhkghklb dhgljhevgh]h ijb[hjZ k hkvx ljm[u Wdkp_gljbkbl_l
p_gljZ g_ ^he`_g hdZau\Zlv kms_kl\_ggh_ \ebygb_ gZ agZq_gby
ijhqghklbgZjZkly`_gb_bebdjmq_gb_
Kh_^bg_gbyDjhf_dhf[bgZpbc kh_^bg_gbc bgZjm`gh]h^bZf_ljZ mdZaZgguo \
blZ[ebg_fZ]gblgu_ mly`_e_ggu_ [mjbevgu_ljm[ufh]ml
ijhba\h^blvky dZd gb`gb_ mly`_e_ggu_ [mjbevgu_ ljm[u bf_xsb_
GhjfZevgh_5HJXODU fmnlh\h_ kh_^bg_gb_ $ 3 , gZ gb`g_f dhgp_ Wlb
kh_^bg_gby ^he`gu khhl\_lkl\h\Zlv lj_[h\Zgbyf jZa^_eZ
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API SPEC 7:1997
51
ijbf_gy_fufb jZaf_jZfb gb`gbo fmnlh\uo kh_^bg_gbc mdZaZgu \
lZ[e
Lj_[h\ZgbydfZl_jbZem
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bkiulZgZ b hnhjfe_ggu_ \ \b^_ ZdlZ ijb_fdb k_jlbnbdZlZ
j_amevlZlu bkiulZgbc ^he`gu ih^l\_j`^Zlv qlh ljm[Z m^h\e_l\hjy_l
fbgbfZevguf lj_[h\Zgbyf d f_oZgbq_kdbf k\hckl\Zf fZ]gblguf
k\hckl\Zf oZjZdl_jbklbdZf ih klhcdhklb d dhjjhabb b [_a^_n_dlghklb
fZl_jbZeZhij_^_ey_fhckihfhsvxmevljZa\mdh\uof_lh^h\
F_oZgbq_kdb_k\hckl\Z
FbgbfZevgu_ lj_[m_fu_ f_oZgbq_kdb_ k\hckl\Z mdZaZgu \ lZ[e
20.
Kh]eZkgh ^_ckl\mxs_fm ba^Zgbx klZg^ZjlZ$670 ? baf_j_gby
l\_j^hklb gZjm`ghc ih\_joghklb ijh\h^ylky lhevdh ^ey bgnhjfZpbb
Dhjj_eypby f_`^m l\_j^hklvx b ijhqghklvx fZl_jbZeZ g_ y\ey_lky
^hklh\_jghc
FZ]gblgu_k\hckl\Z
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Mly`_e_ggu_ g_fZ]gblgu_ [mjbevgu_ ljm[u ^he`gu bf_lv
hlghkbl_evgmx fZ]gblgmx ijhgbpZ_fhklv f_gvr_
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API SPEC 7:1997
52
Baf_j_gb_]jZ^b_glZihey
FZ]gblgh_ ihe_ \ hl\_jklbb gh\hc mly`_e_gghc [mjbevghc ljm[u
^he`gh bf_lv fZdkbfZevgh_ hldehg_gb_ hl h^ghjh^ghklb g_ [he__
fbdjhl_keZ Wlb baf_j_gby ^he`gu ijh\h^blvky k ihfhsvx
fZ]gblhkdhiZ b ^bnn_j_gpbZevgh]h ^ZlqbdZ ihey fZ]gblhf_lj
dhlhjh]h hjb_glbjh\Zg \^hev hkb mly`_e_gghc [mjbevghc ljm[u
QZklvx ZdlZ k_jlbnbdZpbb dZ`^hc ljm[u ^he`gZ [ulv j_]bkljZpby
e_glhqgh]h kZfhibkpZ ihdZau\ZxsZy ^bnn_j_gpbZe ihey ih \k_fm
hl\_jklbx
Lj_[h\Zgby gZ mklhcqb\hklv d dhjjhabb ^ey mly`_e_gguo
[mjbevguo ljm[ ba Zmkl_gblghc klZeb kh^_j`Zsbo ijhp_glh\
ojhfZbeb[he__
Mly`_e_ggu_ [mjbevgu_ ljm[u ba Zmkl_gblghc g_j`Z\_xs_c
klZeb ih^\_j`_gu lj_sbghh[jZah\Zgbx ijb kh\f_klghf \ha^_ckl\bb
jZkly]b\Zxsbo gZijy`_gbc b g_dhlhjuo ki_pbnbq_kdbo
dhjjh^bjmxsbo\_s_kl\
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ijh^_fhgkljbjh\ZgZ iml_f ijh\_^_gby gZ fZl_jbZe_ dZ`^hc [mjbevghc
ljm[u bkiulZgbc gZ dhjjhabx kh]eZkgh ^_ckl\mxs_fm ba^Zgbx
klZg^ZjlZ $ 67 0 : F_lh^bdZ ? Ihj_r_gbx dZ`^h]h ihklZ\sbdZ
bkiulZl_evgu_ h[jZapu fh]ml bf_lv hk_\mx hjb_glZpbx \ kemqZ_ q_]h
bo ke_^m_l hl[bjZlv \ ij_^_eZo ^xcfZ fbeebf_ljZ hl
ih\_joghklb hl\_jklby beb hgb fh]ml bf_lv lZg]_gpbZevgmx
hjb_glZpbx \ kemqZ_ q_]h bo kj_^gyy lhqdZ ^he`gZ gZoh^blvky \
ij_^_eZo^xcfZ fbeebf_ljZ hlih\_joghklbhl\_jklby
Ijb g_dhlhjuo mkeh\byo hdjm`Zxs_c kj_^u klZeb fh]ml
ih^\_j]Zlvky ljZgkdjbklZeeblghfm dhjjhabhgghfmjZklj_kdb\Zgbx ih^
gZijy`_gb_f L_g^_gpbb ^ey jZaebqguo khklZ\h\ klZeb jZaebqgu gh
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API SPEC 7:1997
53
m\_ebq_gb_ klhcdhklb fh`_l [ulv ^hklb]gmlh iml_f h[jZ[hldb
ih\_joghklbijb\h^ys_cdhklZlhqguf gZijy`_gbyfk`Zlby
MevljZa\mdh\hcdhgljhev
DhjimkZ mly`_e_gguo [mjbevguo ljm[ ^he`gu ih^\_j]Zlvky
mevljZa\mdh\hfm dhgljhex ih \k_c ^ebg_ b ih hdjm`ghklb dhjimkZ
Ijb_fe_f dhgljhev i_j_^ jZklZqb\Zgb_f H^gZdh g_h[oh^bfh
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59
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61
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63
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10.2.4 Hkbj_av[jhlhjguo kh_^bg_gbc k aZie_qbdZfb aZ bkdexq_gb_f
^hehlZg_^he`guhldehgylvkyhlijh_dlbjm_fh]hiheh`_gby\ba^_ebb
gZ m]he [hevr_ q_f ]jZ^mkh\ fbgmlu k_dmg^ ^xcfZ gZ
^xcf >fbeebf_ljZ gZ fbeebf_lj@jZkq_lghc hkb Ij_^iheZ]Z_lky
qlhjZkq_lgZy hkv bf__l i_j_k_q_gb_ k hkvxj_av[u \ iehkdhklb kludZ
aZie_qbdZ
10.2.5 >himkd gZ rZ] j_av[u jhlhjgh]h kh_^bg_gby k aZie_qbdZfb
^he`_g [ulvke_^mxsbf
7/31/2019 Rus API Spec 7=1997
80/156
API SPEC 7:1997
64
Z^xcfZ gZ^xcf fbeebf_ljh\ gZfbeebf_lj gZ
dZ`^uc ^xcf fbeebf_lj f_`^m i_j\uf b ihke_^gbf \bldhf
j_av[ubf_xsbfihegmx]em[bgm
b. ^xcfZ fbeebf_ljZ f_`^m i_j\uf b
ihke_^gbf \bldhf j_av[u bf_xsbf ihegmx ]em[bgm beb kmffZ
^xcfh\ fbeebf_ljh\ gZ dZ`^uc ^xcf ff f_`^m
i_j\uf b ihke_^gbf \bldhf j_av[u bf_xsbf ihegmx ]em[bgm
kfhljy qlh[hevr_
10.2.6 >himkdb gZ dhgmkghklv jhlhjgh]h kh_^bg_gby k aZie_qbdZfb
^he`gu[ulvke_^mxsbfb
Z >ey gbii_evghc j_av[u kj_^gyy dhgmkghklv f_`^m i_j\uf b
ihke_^gbf \bldhf j_av[u bf_xsbf ihegmx ]em[bgm
^xcfh\ gZnmlfbeebf_ljZ gZf_lj
E >ey fmnlh\hc j_av[u kj_^gyy dhgmkghklv f_`^m i_j\uf b
ihke_^gbf \bldhf j_av[u bf_xsbf ihegmx ]em[bgm
^xcfh\ gZnmlfbeebf_ljZ gZf_lj
7/31/2019 Rus API Spec 7=1997
81/156
API SPEC 7:1997
65
Wd\b\Ze_glgu_kh_^bg_gby
Gb`_ ijb\_^_gu ghf_jZ kh_^bg_gbc b wd\b\Ze_glgu_ bf
kh_^bg_gby
Ghf_jkh_^bg_gby Wd\b\Ze_glgh_kh_^bg_gb_NC26
NC31
NC38
NC40
NC46
NC50
23/8 IF
27/8 IF
31/2 IF
4 FH
4 IF
41/2 IF
Qbkeh khhl\_lkl\mxs__ ghf_jm kh_^bg_gby \ dhehgd_ lZ[e
y\ey_lky ^bZf_ljhf gZqZevghc hdjm`ghklb j_av[u gbii_ey \ lhqd_
aZf_jZ hdjm]e_gguf^h_^bgbp b^_kyluo^he_c^xcfZ
LZ[ebpZJZaf_jujhlhjguokh_^bg_gbckaZie_qbdZfb
1 2 3 4 5 6 7 8 9 10 11 12
Ghf_jkh_^bg_-gbybebjZaf_j
NhjfZj_av[u
Qbkeh\bldh\
gZ^xcf
Dhgmkghklv^xcfh\gZ
nmlgZ^bZf_lj
Kj_^gbc^bZf_ljj_av[u
\lhqd_baf_j_gby
GZb[hev-rbc
^bZf_ljgbii_ey
>bZf_ljeukdbgZgbii_e_
1/64
FZeuc^bZf_ljgbii_ey
>ebgZgbi
i_evghcqZklbZ
+0 -1/8
FbgbfZev-gZy^ebgZj_av[ufmnub
=em[bgZfmnlu +3/8
-0
JZaa_gdh\ZggZyqZklv
fmnlu+1/32 -
1/64
C DL DLF Ds LPC LBT LBC Qc
Ghf_jlbiZ1&NC23 V-0.038R 4 2 2.35500 2.563 2.437 2.063 3 31/8 3
5/8 25/8
NC26 V-0.038R 4 2 2.66800 2.876 2.750 2.376 3 31/8 35/8 2
15/16
NC31 V-0.038R 4 2 3.18300 3.391 3.266 2.808 31/2 35/8 4
1/8 329/64
NC35 V-0.038R 4 2 3.53100 3.739 3.625 3.114 33/4 37/8 4
3/8 313/16
NC38 V-0.038R 4 2 3.80800 4.016 3.891 3.349 4 41/8 45/8 4
5/64
