98
www.aapindustries.com.au
[6] HIGH PRESSURE FITTINGS
Specifications
Scope on our products
Type:
Elbow, M/F Elbow, Tee, Coupling, Half Coupling, Cap, Plug, Bushing, Union, Reducer Insert, Pipe Nipple, Outlets etc
Size:
NPS 1/8” – 4” (6mm-100mm)
Rating:
Threaded End – 3000lbs
Socketweld End – 3000lbs
Buttweld End – SCH80
Standards: BS 3799 (1974) – Steel Pipe Fittings, screwed and socket-welding for the petroleum industry
ANSI B16.11 (2009) - Forged Steel Fittings, Socket - Welding and Threaded
ASTM A105 - Standard Specification for Carbon Steel Forgings for Piping Applications
MSS SP-97-2012 - Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threaded and
Buttwelding Ends
MSS SP-79-2011 - Socket Welding Reducer Inserts
MSS SP-83-2006 - Class 3000 Steel Pipe Unions Socket Welding and Threaded
ASTM A153 / A153M - 2009 Standard Specification for Zinc Coating (Hot-Dip)
ASTM A182/A182M-12a - Standard Specification for Forged or Rolled Alloy and Stainless Steel Forged Fittings
Threads: AS1722.1/ ISO 7 - British Standard Taper Threads (BSPT)
ANSI B1.20.1 – American National Standard Taper Thread (NPT)
Marking: 1. Carbon and Alloy Steel – Market by Stamping
2. 3/8” and under: Brand only
3. ½” to 4”: marked brand, material, heat number, B16 (to state that it’s an ANSI B16 product), pressure and size
Finishing: Black, Hot-Dipped, Stainless Steel, Galvanised (On Request), Yellow Dichromate (On Request)
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
27.5°
r
r
27.5°
H h
(Pitch p)
90°
A
B
F
E
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)
1 3,4,5,6,7,8,9,10,11,12,...23