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Nantong WellGrid Composite Material Co., Ltd.
Address:No. 11 Cheng Xi She Qu, Rucheng Town, Rugao City, Jiangsu Prov., China
Zip Code:226500
Tel:+86-513-88509885
Contact : Mr. Irwin Shi

+86 13962721862
Fax:+86-513-88509889
Site :www.well-grid.com
E-mail : info@well-grid.com
Skype:irwinshi-frp
QQ:156858136@qq.com

Home > Products > FRP Grating > Molded Grating

FRP Molded Grating

Time:2018-09-05 15:20:42 Hits:1765

FRP Molded Grating is a structural panel which uses high-strength E-Glass roving as reinforcing material, thermosetting resin as matrix and then casted and formed in a special metal mold. It provides properties of light weight, high strength, corrosion resistance, fire resistance and anti-skid. FRP Molded Grating is widely used in oil industry, power engineering, water & waste water treatment, ocean survey as working floor, stair tread, trench cover, etc. and is an ideal loading frame for corrosion circumstances. Our product passes a whole series of well known third party tests with the fire and mechanical properties, and the product sells well all over the world and has a good reputation.

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FRP Molded Grating Strong Points:

1. Corrosion Resistance

Different types of resin provide their own different anti-corrosion properties, which could be used in different corrosion circumstance such as acid, alkali, salt, organic solvent (in gas or liquid form) and the like over a long period.

2. Fire Resistance

Our special formula provide grating with excellent fire resistant performance. Our FRP gratings pass ASTM E-84 Class 1.

3. Light Weight & High Strength

The perfect combination of the continuous E-glass roving and thermosetting polyester resin provide grating with light weight and high strength and its specific gravity is only 1/4 of that of steel, 1/3 of aluminum. Its rigidity is up to and even exceeds that of steel. Different thickness and mesh size bring the client more choice.

4. Safety & Anti-slip

The high modulus of elasticity and various surfaces provided the super anti-skid performances. Its surface could be smooth surface, meniscus surface, grit surface and chequer plate cover which is suitable for different working places.

5. Electrical Insulating

High strength E-glass roving and high-grade resin provide the product super electric performance. Its electric break strength could reach 10KV/mm. There is no electric spark even when impact by tools, meanwhile it is non-magnetism. FRP Molded Grating could be used safely under the antiknock, diamagnetism and electric-resistance environments.

6. Aging Resistance

The high-grade resin and anti-ageing stabilizer provide grating long-life ageing resistant performance and the unique design make grating excellent self-cleanness function and keep its brightness and strength over a long time. The service life of grating could be 25 years.

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FRP Molded Grating Availability:

No.

Deep (mm
Mesh Sizemm
Panel Size Available(mm
Open Area (%
Unit Weight (kg/m²
1
13
38*38
1220*3660
68
6.3
2
13
50*50
1220*3660
78
5.8
3
13
38*38+19*19
1220*3660
40
10.8
4
14
40*40+20*20
1007*4047
42
10.5
5
22
40*40+20*20
1007*4047
42
15.0
6
25
38*38
1220*3660/1000*4038
68
12.7
7
25
38*38+19*19
1220*3660
40
16.6
8
25
40*40
1007*4047
66
12.5
9
25
100*25
1007*3007
66
13.0
10
25
101.6*25.4
1220*3660
64
15.2
11
30
38*38
1220*3660/1000*4038
68
15.0
12
30
38*38+19*19
1220*3660/1000*4038
40
18.6
13
30
40*40+20*20
1007*4047
42
18.0
14
30
38*38+12*12*12
1220*3660/1000*4038
30
22.0
15
38
38*38
1525*3050/1220*3660/1000*4038
68
19.0
16
38
38*38+19*19
1220*3660
40
23.7
17
38
40*40+20*20
1007*4047
42
23.5
18
38
38*152
1220*3660
66
19.0
19
40
40*40
1007*4047
66
20.0
20
50
38*38
1220*3660
56
42.0
21
50
50*50
1220*3660
78
21.2
22
60
38*38
1220*3660
54
51.5

Notes: the letter P following the No. means this grating could be supplied with phenolic resin.


FRP Molded Grating Loading Table:


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25mm 38x38mm

Span(mm

Concentrated Line Load (kg/m

Max Load

75

150

300

450

600

750

450

0.559

1.146

2.159

3.073

4.115

4.75

3910

600

0.864

1.702

3.505

5.156

6.706

8.173

2924

900

2.896

5.918

12.116

18.44

——

——

1948

1200

5.715

11.633

——

——

——

——

1461


Span(mm

Uniform Load (kg/m²

Max Load

240

480

980

1450

2450

3650

450

0.66

1.092

1.93

2.769

4.47

6.579

——

600

1.118

2.108

4.14

6.172

10.211

15.265

——

750

3.667

5.387

10.82

16.28

——

——

——

900

5.537

11.176

21.717

——

——

——

——


30mm 38x38mm

Spanmm Concentrated Line Load (kg/m Max Load
75 150 300 450 750 1500
300 <0.254 <0.254 0.254 0.508 0.762 1.524 9923
450 0.254 0.508 1.106 1.524 2.54 —— 4828
600 0.508 1.27 2.286 3.556 5.842 —— 4112
750 1.27 2.54 4.826 7.366 12.446 —— 3174
900 1.778 3.81 7.62 11.43 —— —— 2637


Spanmm Uniform Load (kg/m² Max Load
350 500 750 1000 1500 2500
300 <0.254 <0.254 <0.254 <0.254 0.254 0.508 32501
450 0.254 0.508 0.762 1.106 1.524 2.286 21661
600 1.016 1.524 2.286 2.794 4.318 7.366 12981
750 2.54 3.81 5.842 7.62 11.684 —— 8396
900 4.572 7.112 10.668 —— —— —— 5758



38mm 38x38mm

Spanmm Concentrated Line Load(kg/m Max Load
75 150 300 450 600 750
300 0.279 0.356 0.483 0.61 0.762 0.889 17116
600 0.356 0.66 1.245 1.85 2.464 3.073 8718
900 0.864 1.803 3.683 5.563 7.417 9.296 5817
1200 2.261 4.749 9.677 14.63 19.583 —— 3755


Spanmm Concentrated Line Load (kg/m Max Load
240 480 980 1450 2450 3650
300 0.254 0.305 0.381 0.457 0.635 0.838 ——
600 0.432 0.813 1.549 2.311 3.8354 5.74 ——
900 1.702 3.454 6.959 10.465 17.475 —— ——
1200 5.969 12.167 24.511 —— —— —— ——


50mm 50x50mm

Spanmm Concentrated Line Load (kg/m Max Load
75 150 300 450 600 750
300 0.279 0.305 0.406 0.483 0.635 1.041 21727
600 0.356 0.508 0.813 1.128 1.753 3.327 11713
900 0.508 1.118 2.235 3.2 5.156 10.058 7780
1200 0.914 1.93 3.937 5.918 9.957 —— 5834


Spanmm Uniform Load (kg/m² Max Load
240 480 980 1450 2450 3650
300 0.254 0.279 0.33 0.381 0.483 0.737 ——
600 0.381 0.584 0.965 1.372 2.134 4.115 ——
900 1.194 2.108 3.937 5.766 9.449 18.593 ——
1200 2.413 4.928 9.954 14.961 —— —— ——



FRP Molded Grating Surface:

Real

Surface

Service

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Concave surface

Anti-skid, easy clean;

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Grit surface

Anti-skid and good abrasion (The grit could be fine, middle and coarse);

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Smooth surface

Free clean, contaminant non stay

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Chequer cover surface

Anti-skid, easy clean, odour isolation;

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Grit cover surface

Anti-skid, good abrasion (The grit could be fine, middle and coarse), odour isolation


Standard Resin Systems:

ONFR

Polyester resin system, Good corrosion resistance, Non fire resistance;

OFR

Polyester resin system, Good corrosion resistance, Fire resistance ASTM E-84 Class 1;

ISOFR

Premium grade Isophthalic Polyester resin system, excellent corrosion resistance, Fire resistance ASTM E-84 Class 1;

VEFR

Vinyl Ester resin system, Maximum corrosion resistance, Fire resistance ASTM E-84 Class 1;

PHE

Phenolic resin system, High temperature service, Low flame spread index, low smoke developed index and low toxicity.


FRP Molded Grating Chemical Properties Guide

Chemicals

Concentration(%

Maximum service temperature

Vinyl ester resin

Iso resin

Ortho resin

Acetic acid

50

82

30

20

Chromic acid

20

38

No

No

Nitric acid

5

70

48

25

Phosphoric acid

85

100

65

No

Sulfuric acid

25

100

52

20

Hydrochloric acid

<10

100

52

No

20

90

38

No

37

65

No

No

Hydrotropic acid

25

93

38

No

Lactic acid

100

100

52

40

Benzoic acid

All

100

65

------

Aluminum hydroxide

All

82

45

No

Aqueous ammonia

28

52

30

No

Sodium hydroxide

10

65

20

No

25

65

No

No

50

70

No

No

Ammonium sulfate

All

100

60

50

Ammonium chloride

All

100

82

60

Ammonium bicarbonate

All

52

No

No

Copper chloride

All

100

65

60

Copper cyanide

All

100

No

No

Ferric chloride

All

100

65

60

Ferrous chloride

All

100

60

50

Manganese sulfate

All

100

65

45

Sodium cyanide

All

100

------

------

Potassium nitrate

All

100

65

40

Zinc sulfate

All

100

65

45

potassium nitrate

100

100

65

40

Potassium dichromate

100

100

60

40

Ethylene glycol

100

100

65

40

Propylene glycol

100

100

65

40

Gasoline

100

80

60

35

Glucose

100

100

38

No

Glycerin

100

100

65

60

Hydrogen peroxide

30

38

---

---

Dry chlorine gas

100

82

38

No

Wet chlorine gas

All

82

No

No

Vinegar

100

100

65

30

Distilled water

100

93

60

25

fresh water

100

100

70

40



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