a)Comparison by grade
By selecting reinforcing materials and molding methods, we have made it possible to manufacture a wide variety of products, from products with low costs to products with high functionality.

GradeSymbolContentsMolding method
Type 1FRP1An important strength part that requires the highest strength and rigidity in one direction.
Press
Filament winding
Type 2FRP2An important strength part that requires the highest degree of strength and rigidity.
Type 3FRP3An important strength part that requires a high degree of strength and rigidity.
Type 4FRP4Strength part that requires medium strength and rigidity.
Wet layup
Wet layup
(Hand layup)
Type 5FRP5A part whose strength and rigidity can be slightly disliked for economic reasons.
Type 6FRP6A part that does not require much strength and rigidity.
Type 7FRP7A part whose structural characteristics are not important.

b)Standard example of reinforcing material composition for each grade

GradeSymbolContents
Type 1FRP1Roving (FW)
Type 2FRP2Satin cloth (pressurized)
Type 3FRP3Satin cloth (contact pressure), plain cloth (pressurized)
Type 4FRP4Satin cloth (contact pressure), plain cloth + roping cloth (contact pressure)
Type 5FRP5Plain cloth + mat (contact pressure)
Type 6FRP6Mat (contact pressure)
Type 7FRP7Mat (contact pressure)

c)Characteristics of material mechanics

Charactaristics of material mechanicsTest conditionsSpecific gravity
FRP1FRP2FRP3FRP4FRP5FRP6FRP7
Flexural strength (kg / ㎟)Standard
Moisture
67more than
60more than
35more than
31more than
26more than
23more than
22more than
19more than
16more than
14more than
13more than
11more than
11more than
8more than
Standard
Standard
Moisture
3600more than
3240more than
1760more than
1620more than
1410more than
1270more than
1020more than
880more than
770more than
670more than
600more than
540more than
490more than
390more than
Tensile strength (kg / ㎟)Standard
Moisture
78more than
78more than
26more than
26more than
20more than
20more than
14more than
14more than
10more than
10more than
6more than
6more than
5more than
5more than
Compressive strength (kg / ㎟) Standard
Moisture
35more than
24more than
23more than
20more than
18more than
16more than
15more than
13more than
12more than
11more than
11more than
10more than
11more than
9more than
Void content (%)
Resin content (wt%)

1.0more than
25more than
1.5more than
43more than
2.0more than
50more than
3.0more than
57more than
4.0less than
65less than
5.0less than
75less than
5.0less than
80less than