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FRP's Introduce
5. Performance of All Materials
Item
Material Fiber Winded GRP
Steel
Cast Iron
PVC
specific gravity
1.8-2.1
7.84
7.34
1.4
tensile strength
160～320
187
187
50-60
specific strength
100-168
25.5
25.5
36.8
　 Specific gravity of the GRP pipe is related with the proportion of the liner towards  the whole tube wall of the pipe, therefore specific strength is related with the  thickness of tube wall and the diameter （Here pipe diameter is 700mm）
6. Illustrative Drawing of GRP pipe products and their parameters ：
    
Nominal Inside Diameter
Size
　
D
D1
D2
R
H1
H2
H3
H4
H5
b1
b2
b3
C
Z×D
DN40
150
110
88
60
135
205
150
100
170
18
16
12
40
4-φ18
DN50
165
125
102
75
165
250
170
110
175
20
16
14
50
4-φ18
DN65
185
145
122
100
200
280
180
120
180
22
16
14
50
4-φ18
DN80
200
160
138
120
220
295
190
130
195
24
18
16
50
4-φ18
DN100
220
180
158
150
260
335
200
150
215
24
18
16
60
8-φ18
DN125
250
210
188
180
310
400
245
175
240
26
18
18
70
8-φ18
DN150
285
240
212
220
360
450
290
195
265
26
20
18
80
8-φ23
DN200
340
295
268
300
475
570
340
215
355
31
22
18
110
8-φ23
DN250
395
350
320
375
565
650
380
240
415
34
26
18
130
12-φ23
DN300
445
400
370
450
660
740
410
270
480
40
28
20
150
12-φ23
DN350
500
460
425
530
810
870
420
300
　
43
32
20
180
16-φ23
DN400
565
515
482
600
900
1020
480
340
　
46
38
20
230
16-φ23
DN450
615
565
482
675
1000
1080
510
400
　
48
38
22
240
20-φ23
DN500
670
620
585
750
1100
1200
560
450
　
52
44
22
270
20-φ27
DN600
780
725
685
900
1300
1400
630
450
　
58
50
22
310
20-φ30
DN700
895
810
775
1050
1450
1560
730
500
　
64
56
24
300
24-φ27
DN800
1015
920
880
1200
1600
1700
830
550
　
70
67
24
320
24-φ30
DN900
1075
1020
980
1350
1780
1850
930
600
　
76
68
24
340
24-φ30
DN1000
1230
1120
1080
1500
1900
2000
1023
640
　
82
　
24
350
28-φ33
 

Note ：
1. Connecting mode of pipeline with nominal pressure of 1.6-4.0MPa is otherwise    designed。
2. C1 and C2 of Socket joint tapered pipe is equal to C of corresponding pipe diameter.    When the discrepancy between DN1 and DN2 is within double of pipe diameters, H3    adopts that of standard constrictive joint of the bigger end.When the discrepance is    over triple of pipe diameter, H3 adopts 1.2-1.8 times of that of of standard    constrictive joint of the bigger end.
3. Non-standard or special-shaped pipe products will be made according to the drafts or    designed for customers。
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