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Conical seal welded pipe joints (16, 25, 31.5MPa)
I. Overview
Applicable to conical seal welded pipe joints for pipeline systems with oil and gas as the medium, the working temperature is -25 ~ + 80 ℃.
Cone seal welded straight through pipe joint, cone seal welded straight through cylindrical pipe threaded pipe joint, cone seal welded straight through cone pipe threaded pipe joint, cone seal welded tapered threaded pipe joint, cone seal welded 90 elbow joint, cone 90 elbow joint with sealed welded cylindrical pipe thread, 90 elbow joint with tapered welded tapered pipe joint, 90 elbow joint with tapered welded tapered thread joint, straight through pipe joint with both ends of tapered seal The form and size of the right-angle pipe joint, conical seal welded tee joint, cone seal welded partition wall right-angle pipe joint, cone seal welded partition wall straight pipe joint are according to the regulations in Figures 1 to 13 and the table.
Structure form
3. Dimensions
Do
d
d1
d2
lo
l
I
F
I
F
Ⅰ Ⅱ
F
8
M12X1.5
R1 / 8
NPT1 / 8
4
18
4.0
4.102
12
14
9
10
M14X1.5
G1 / 4A
R1 / 4
NPT1 / 4
6
twenty one
twenty four
6.0
5.786
18
14
12
M16X1.5
G3 / 8A
R3 / 8
NPT3 / 8
7
twenty four
27
6.4
6.09
twenty two
14
M18X1.5
G3 / 8A
8
27
14
16
M22X1.5
G1 / 2A
R1 / 2
NPT1 / 2
10
30
34
8.2
8.12
25
19
20
M27X2
G3 / 4A
R3 / 4
NPT3 / 4
13
36
41
9.5
8.61
16
28
25
M33X2
G1A
R1
NPT1
17
41
46
10.4
10.16
18
32
twenty four
30
M42X2
G11 / 4A
R11 / 4
NPT11 / 4
20
55
55
12.7
10.66
20
35
38
M48X2
G11 / 2A
R11 / 2
NPT11 / 2
26
60
60
twenty two
38
36
Tube outer diameter DO
l1
L
L1
L2
L3
L4
L5
L6
L7
L8
Straight connector
90 elbow joint
Ⅰ Ⅱ
Ⅲ Ⅳ
Ⅰ Ⅱ
Ⅲ Ⅳ
Ⅰ Ⅱ
Ⅲ Ⅳ
8
12
48
47
68
67
28
27
27
47
34
54
70
17
≈20
10
14
49
48
72
71
29
28
28
48
40
60
72
19
12
51
50
81
80
30
29
29
50
41
62
75
19
14
59
58
83
82
36
35
35
58
45
65
84
twenty two
≈22
16
19
62
60
90
89
39
37
37
60
47
70
85
twenty three
20
68
66
112
110
43
41
41
66
55
80
91
27
25
twenty four
78
76
118
116
48
46
46
76
62
92
100
31
30
83
81
152
150
52
50
50
81
68
99
107
39
38
26
92
90
182
180
56
54
54
90
74
110
116
43
Tube outer diameter DO
L9
L10
S1
S2
S3
S4
S5
S6
H
R
D
Sealing ring
washer
O-ring
End face
tapered surface
8
47
117
twenty one
18
18
16
twenty four
56
20
17
12
7.5X1.8
10
48
120
twenty four
twenty one
twenty four
twenty one
16
27
56
20
19
14
16X2.65
9X1.8
12
50
125
twenty four
twenty four
27
twenty four
18
30
58
twenty four
twenty one
15
8X2.65
11.2X1.8
14
58
142
27
27
twenty four
twenty one
30
58
28
twenty three
118
11.8X2.65
16
60
145
30
30
34
27
twenty four
36
60
32
25
twenty two
23.6X2.65
14X2.65
20
66
157
36
36
41
34
27
41
70
45
31
27
30X2.65
18X2.65
25
76
176
46
46
46
41
34
50
110
58
37
33
34.5X2.65
23.6X2.65
30
81
188
50
55
55
46
36
55
130
72
43
42
43.7X2.65
28X2.65
38
90
206
60
60
60
55
46
65
140
90
53
48
50X2.65
36.5X2.65
Tube outer diameter DO
JB / T
6381.1
JB / T
6381.2
JB / T
6381.3
JB / T
6381.4
JB / T
6382.1
JB / T
6382.2
JB / T
6382.3
JB / T
6382.4
JB / T
6383.1
JB / T
6383.2
JB / T
6383.3
JB / T
6384.1
JB / T
6384.2
8
0.11
0.10
0.1
0.12
0.12
0.12
0.09
0.16
0.23
0.28
0.27
10
0.13
0.13
0.11
0.11
0.13
0.13
0.13
0.13
0.11
0.19
0.29
0.32
0.31
12
0.15
0.16
0.15
0.15
0.16
0.16
0.16
0.16
0.15
0.22
0.32
0.37
0.36
14
0.18
0.18
0.18
0.18
0.20
0.20
0.19
0.19
0.18
0.24
0.36
0.54
0.44
16
0.24
0.24
0.22
0.22
0.26
0.26
0.24
0.25
0.23
0.32
0.48
0.63
0.62
20
0.47
0.47
0.45
0.45
0.6
0.6
0.58
0.58
0.42
0.59
0.82
0.9
0.85
25
0.95
0.95
0.91
0.91
0.84
0.84
1.09
1.09
0.89
1.05
1.51
1.38
1.33
30
1.18
1.18
1.15
1.15
1.32
1.31
1.32
1.32
1.09
1.3
1.82
1.86
1.75
38
1.26
1.26
1.51
1.51
1.85
1.85
1.78
1.78
1.42
1.82
2.66
2.67
2.35
Taper Seal Welded Pipe Joint Termination Threads (Metric and Cylindrical Pipe Threads)
The connection dimensions of the conical seal welded pipe joint termination threads are shown in Figures A1, A2 and Table A1.
Tube outer diameter DO
D
d2
D1
b
Metric fine thread
Cylindrical pipe thread
Metric fine thread
Cylindrical pipe thread
Metric fine thread
Cylindrical pipe thread
8
M12X1.5
18
19
15
17
10
M14X1.5
G1 / 4A
twenty one
twenty four
twenty two
25
12
M16X1.5
G3 / 8A
twenty four
27
25
28
14
M18X1.5
G3 / 8A
27
29
16
M22X1.5
G1 / 2A
30
34
31
35
20
M27X2
G3 / 4A
36
41
37
42
19
25
M33X2
G1A
46
46
47
47
twenty one
30
M42X2
G11 / 4A
55
55
56
56
twenty three
38
M48X2
G11 / 2A
60
60
61
61
25
Third, the mark description
a. Taper sealed welded straight-through pipe joint with pipe outside diameter D0 of 20mm:
Pipe joint 20 JB / T6381.1-92
b. Taper-sealed welded straight cylindrical pipe threaded pipe joint with outer diameter D0 of 20mm:
Pipe joint 20 JB / T6381.2-92
c. Conical seal welded straight through conical pipe threaded pipe joint with outer diameter D0 of 20mm;
Pipe joint 20 JB / T6381.3-92
d. Taper-sealed welded straight-through taper pipe joint with pipe outside diameter D0 of 20mm:
Pipe joint 20 JB / T6381.4-92
e. Conical seal welded 90 elbow joint with pipe outside diameter D0 of 20mm:
Pipe joint 20 JB / T6382.1-92
f. Conical seal welded cylindrical pipe threaded 90 elbow joint with pipe outer diameter D0 of 20mm:
Pipe joint 20 JB / T6382.2-92
g. Conical seal welded conical pipe thread 90 elbow joint with pipe outer diameter D0 of 20mm:
Pipe joint 20 JB / T6382.3-92
h. Taper sealed welded taper 90 elbow joint with pipe outer diameter D0 of 20mm:
Pipe joint 20 JB / T6382.4-92
i. Welded straight-through pipe joints with tapered seal at both ends of the pipe outer diameter D0 is 20mm:
Pipe joint 20 JB / T6383.1-92
j. Taper-sealed welded right-angle pipe joint with pipe outside diameter D0 of 20mm:
Pipe joint 20 JB / T6383.2-92
k. Conical seal welded tee joint with outer diameter D0 of 20mm:
Pipe joint 20 JB / T6383.3-92
l. Taper-sealed welded right-angle pipe joint with pipe outer diameter D0 of 20mm:
Pipe joint 20 JB / T6384.1-92
m, tapered welded bulkhead straight pipe joint with pipe outer diameter D0 of 20mm:
Pipe joint 20 JB / T6384.2-92
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Address: Chengdong Industrial Park, Qidong City Phone: 0513-83660308, 83905568 Fax: 0513-83660318 Email: djrh888@163.com