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<strong>Flan</strong>ge Type<br />
Weldneck<br />
Blind,<br />
Threaded, &<br />
Integral<br />
Table 4-1<br />
API vs. ANSI <strong>Flan</strong>ge Dimensions<br />
Pressure Nominal<br />
Class Rating Size Range (in.)<br />
ANSI API ANSI API<br />
600 2000 1/2-24 113/16 <strong>to</strong> 11<br />
900 3000 1/2-24 113/16 <strong>to</strong> 11<br />
1500 5000 1/2-24 113116 <strong>to</strong> 11<br />
600 2000 V2-24 113/16 <strong>to</strong> 211/4<br />
900 3000 1/2-24 113/16 <strong>to</strong> 20%<br />
1500 5000 1/2-24 113/16 <strong>to</strong> 11<br />
Table 4-2<br />
API Bore Sizes and Matching Tubular Goods Sizes<br />
for 2,000, 3,000 and 5,000-1b psi <strong>Flan</strong>ges<br />
or 5,000 Ib psi Clamp Type Connec<strong>to</strong>rs<br />
Old API<br />
Nominal size (in.)<br />
11h<strong>to</strong> 10<br />
11h <strong>to</strong> 10<br />
11/2 <strong>to</strong> 10<br />
11h<strong>to</strong> 20<br />
11/2 <strong>to</strong> 20<br />
11/2 <strong>to</strong> 10<br />
New API Line<br />
Bore Sizes Old Nominal Pipe Tubing Casing<br />
for <strong>Flan</strong>ges <strong>Flan</strong>ge Nominal Outside Outside<br />
and Hubs Size (in.) Size (in.) Diamater (in.) Diameter (in.)<br />
84<br />
113/le 11/2 11/2<br />
21/le 2 2<br />
29118 21/2 21/2<br />
31/8 3 3<br />
41116 4 4<br />
71116 6 6<br />
9 8 8<br />
11 10 10<br />
13% 12 12<br />
135/8 135/8 --<br />
163/4 16 16<br />
163/4 163/4 --<br />
211/4 20 20<br />
20314 20 20<br />
1.660 & 1.900<br />
1.600 thru 2%<br />
27/8<br />
31/2<br />
4 & 41/2 41/2<br />
41/2 thru 7<br />
75/8 & 85/8<br />
95/8 & 103/4<br />
11314 & 13318<br />
113/4 & 13318<br />
16<br />
16<br />
20<br />
20
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