Ductile Iron FM/UL Fire Fittings Rigid Coupling for Fire System

Material: QT450-12, ASTM A536, GRADE 65-45-12 ,etc.Standard: ASME, ANSI, DIN, JIS, ASTM, UNI, BS ,etc.Pressure: 300PSI, 500PSI, 750PSI, 1000PSI.Surface treatment: red painted, orange painted, galvanized, red spraied, orange spraied, dacromet, epoxy powder, epoxy, electroplate, galvanized+epoxy, etc.Applications: Industrial pipeline system on shipping ,mine, fire protection ,oil field,textile,powder plant,etc.Advantages:
1. Low price,high quality & fast delivery & strict inspection .
2. The fastest delivery
3. The lowest price
4. Most comprehensive standards and materials for your choice. 5.100% export.
6. Our products EXPORT to Africa, Oceania, midle east, eastern Asia, Western Europe etc.1. Sepcification of Flexible coupling
Nominal size
mm/in
Pipe O.D
mm/in
Work Pressure
MPa/psi
Dimension mm
Bolt/Nut
A
B
C
1
1.315
300
98
60
45
2-M10*50
1¼
1.66
300
110
69
45
2-M10*50
1½
1.9
300
118
73
45
2-M10*50
2
2.375
300
124
90
45
2-M10*50
2½
3
300
138
100
45
2-M10*50
3
3.5
300
154
120
46
2-M10*55
4
4.252
300
186
148
48
2-M12*65
4
4.5
300
190
149
48
2-M12*65
5
5.25
300
216
171
48
2-M12*65
5
5.5
300
217
176
48
2-M12*65
6
6.26
300
240
196
48
2-M12*75
6
6.5
300
245
202
48
2-M12*75
6
6.625
300
250
206
48
2-M12*75
8
8.625
300
320
258
56
2-M16*85
10
10.75
300
390
316
58
2-M20*95
12
12.75
300
446
366
60
2-M20*110