[1] PEAL
®
STEEL FITTINGS
6
www.aapindustries.com.au
r
r
h
H/6
H/6
H
27.5°
(Pitch p)
r
r
27.5°
H h
(Pitch p)
90°
A
B
F
E
Fig. 1. (Parallel)
H = 0.960491 x p
h = 0.640327 x p
r = 0.137329 x p
Fig. 2. (Taper)
H = 0.960237 x p
h = 0.640327 x p
r = 0.137278 x p
Fig. 3. (Taper)
Axis of screw
Taper 1 in 16 in on dia.
(Shown exaggerated in diagram)
British Standard Threads
All measurements in mm
NOMINAL
BORE
OF PIPE
APPROX.
OUTSIDE
DIAMETER
NUMBER OF
THREADS
PER INCH
PITCH
DEPTH OF
THREADS
DIAMETER AT
GAUGE
PLANE
LENGTH OF
USEFUL
THREAD
IMPERIAL
METRIC
A
P
h
B
E
1/8
6
10.16
28
0.907
0.581
9.72
6.5
1/4
8
13.66
19
1.337
0.856
13.15
9.7
3/8
10
17.17
19
1.337
0.856
16.66
10.1
1/2
15
21.51
14
1.814
1.162
20.95
13.2
3/4
20
27.00
14
1.814
1.162
26.44
14.5
1
25
33.93
11
2.309
1.479
33.24
16.8
1 1/4
32
42.59
11
2.309
1.479
41.91
19.1
1 1/2
40
48.48
11
2.309
1.479
47.80
19.1
2
50
60.47
11
2.309
1.479
59.61
23.4
2 1/2
65
76.09
11
2.309
1.479
75.18
26.7
3
80
88.87
11
2.309
1.479
87.88
29.8
4
100
114.14
11
2.309
1.479
113.03
35.8
5
125
139.65
11
2.309
1.479
138.43
40.1
6
150
165.12
11
2.309
1.479
163.83
40.1
Chemical Composition of Seamless Steel Fittings
C MAX. (%)
S MAX. (%)
P MAX. (%)
0.25
0.35
0.09
Chemical Composition of Fabricated Fittings
C MAX. (%)
Mn MAX. (%)
P MAX. (%)
S MAX. (%)
0.25
1.40
0.045
0.045
Mechanical Properties of Seamless Steel Fittings
TENSILE STRENGTH MIN. (N/mm2)
ELONGATION MIN. (%)
320
20
Mechanical Properties of Fabricated Fittings
TENSILE STRENGTH MIN. (N/mm2)
YEILD STRENGTH MIN. (N/mm2)
ELONGATION MIN. (%)
320
195
20
STEEL THREADED PIPE FITTINGS MANUFACTURED ACCORDING TO THE BS EN 10241:2000 STANDARD.
NORMATIVE REFERENCES: EN 10204, EN ISO 6708, ISO 7-1 PART 1, ISO 7-2, PART 2, AS 1074.
Specifications
1 3,4,5,6,7,8,9,10,11,12,...21