Product

GRP Pultruded Grating

GRP pultruded grating is composed of a series of GRP pultruded profiles, which is mainly used for decoration building materials or industrial equipment.
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GRP pultruded grating has 2~3 times of strength as molded grating, which is applied to applications requiring large load-bearing capacity and wide span. The resin content of GRP pultruded grating accounts for about 35%, while the glass fiber accounts for about 65%, ensuring that the strength and hardness are twice as much as the molded gratings.

GRP pultruded grating is composed of pultruded “I” profile or “T” profile, and various pultruded rods or special-shaped rods as cross bars, which are fixedly connected together at a certain distance through adhesive:

1.Load-bearing profile: mainly composed of pultruded “I” bar or “T” bar.

2.Connecting profile: the function is to connect load-bearing profiles, including pultruded round rods or pultruded special-shaped rods.

GRP pultruded grating can be used for trench cover, grating walkway, power fence, packing bracket, substation cobblestone layer support, etc. due to high strength, longer span and long service life.

◆ Common size of Mach’s GRP pultruded grating

▽ I bar GRP pultruded grating

Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	Weight
Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	CD pin	three-core pin
I4010	25	15/15	40%	15.60kg/m2	17.10kg/m2
I5010	25	15/15	50%	12.70kg/m2	14.20kg/m2
I6010	25	15/15	60%	9.70kg/m2	11.20kg/m2
I40125	32	15/15	40%	18.33kg/m2	19.83kg/m2
I50125	32	15/15	50%	15.90kg/m2	17.40kg/m2
I60125	32	15/15	60%	12.00kg/m2	13.50kg/m2
14015	38	15/15	40%	21.01kg/m2	22.01kg/m2
I5015	38	15/15	50%	18.10kg/m2	19.10kg/m2
I6015	38	15/15	60%	15.50kg/m2	16.10kg/m2

▽ T bar GRP pultruded grating

Unit: mm

Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	Weight
Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	three-core pin
T1210	25	38/15	12%	14.50kg/m2
T1810	25	41.3/15	18%	13.80kg/m2
T2510	25	38/15	25%	12.30kg/m2
T3310	25	41.3/15	33%	11.20kg/m2
T3810	25	38/15	38%	10.20kg/m2
T1215	38	38/15	12%	19.60kg/m2
T2515	38	38/15	25%	16.70kg/m2
T3815	38	38/15	38%	14.20kg/m2
T5015	38	25/15	50%	10.30kg/m2
T3320	50	25/15	33%	20.27kg/m2
T5020	50	25/15	50%	15.66kg/m2

▽ High-load GRP pultruded grating

Unit: mm

Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	Weight
Model No.	Grating Thickness	Pultrusion Beam Size(top/bottom)	Open Area	three-core pin
HL4020	50	15	40%	70.37kg/m2
HL5020	50	15	50%	52.24kg/m2
HL6020	50	15	60%	43.50kg/m2

Corrosion Resistance Table of GRP Pultruded Grating

Unit: mm

Chemical medium	Vinyl		Isophthalic
Chemical medium	Concentration(%)	Maximum temperature resistance(℃)	Concentration(%)	Maximum temperature resistance(℃)
Acetic acid	50	180/82	50	125/52
Benzoic acid	Saturated solution	200/93	Saturated solution	150/66
Chromic acid	10	120/49	5	70/21
Citric acid	Concentrate	200/93	Concentrate	170/77
Hydrobromic acid	50	120/49	50	120/49
Hydrochloric acid	37	100/38	37	75/24
Lactic acid	Concentrate	200/93	Concentrate	170/77
Nitric acid	20	100/38	20	70/21
Oxalic acid	Concentrate	120/96	Concentrate	75/24
Perchloric acid	30	80/27	Not recommended	Not recommended
Phosphoric acid	100	200/93	100	120/49
Sulfuric acid	75	100/38	25	75/24
Tartaric acid	Concentrate	200/93	Concentrate	170/77
Vinegar	100	200/93	100	170/77
Ammonium hydroxide	28	100/38	28	Not recommended
Aluminum hydroxide	100	170/77	100	160/71
Borax	Saturated solution	200/93	Saturated solution	170/77
Amine oxide	Concentrate	190/88	Concentrate	170/77
Ammonium Bicarbonate	50	150/65	15	125/52
Ammonium Sulfate	Concentrate	200/93	Concentrate	170/77
Calcium carbonate	Concentrate	180/82	Saturated solution	170/77
Calcium nitrate	Concentrate	200/93	Concentrate	180/82
Copper chloride	Concentrate	200/93	Concentrate	170/77
Copper cyanide	Concentrate	200/93	Concentrate	170/77
Copper nitrate	Concentrate	200/93	Concentrate	170/77
Ferric chloride	Concentrate	200/93	Concentrate	170/77
Ferrous chloride	Concentrate	200/93	Concentrate	170/77
Lithium chloride	Saturated solution	200/93	Saturated solution	150/66
Magnesium chloride	Concentrate	200/93	Concentrate	170/77
Magnesium nitrate	Concentrate	180/82	Concentrate	140/66
Magnesium sulfate	Concentrate	190/88	Concentrate	170/77
Mercury chloride	100	190/88	100	150/56
Mercurous chloride	Concentrate	180/82	Concentrate	140/60
Nickel chloride	Concentrate	200/93	Concentrate	170/77
Nickel sulfate	Concentrate	200/93	Concentrate	170/77
Potassium chloride	Concentrate	200/93	Concentrate	170/77
Potassium dichromate	Concentrate	200/93	Concentrate	170/77
Potassium nitrate	Concentrate	200/93	Concentrate	170/77
Potassium sulfate	Concentrate	200/93	Concentrate	170/77
Sodium acetate	Concentrate	300/93	Concentrate	160/71
Sodium bisulfate	Concentrate	200/93	Concentrate	170/77
Sodium bromide	Concentrate	200/93	Concentrate	170/77
Sodium chloride	Concentrate	200/93	Concentrate	170/77
Sodium cyanide	25	150/66	Not recommended	Not recommended
Sodium nitrate	Concentrate	200/93	Concentrate	170/77
Sodium sulfate	Concentrate	200/93	Concentrate	170/77
Tin chloride	Concentrate	190/88	Concentrate	160/71
Zinc nitrate	Concentrate	200/93	Concentrate	170/77
Carbon tetrachloride	100	75/24	Not recommended	Not recommended
Chlorine	–	170/77	–	140/60
Chlorine water	Saturated solution	180/82	Saturated solution	80/27
Ethanol	50	90/32	50	75/24
Vinyl glycol	100	200/93	100	90/32
Formaldehyde	Concentrate	100/38	50	75/24
Gasoline	100	150/65	100	80/27
Glucose	100	200/93	100	170/77
Glycerin	100	200/93	100	150/66
Hydrogen peroxide	30	100/38	5	100/38
Propylene glycol	Concentrate	200/93	Concentrate	170/77
Distilled water	100	180/82	100	170/77
Benzene	Not recommended	Not recommended	Not recommended	Not recommended

Q1: How do you ensure the quality of FRP products?

A: All products are manufactured in our own factory under strict ISO-based quality control. We perform raw material testing, process monitoring, and final inspection to ensure every panel meets strength, durability, and corrosion-resistance requirements.

Q2: Where can FRP products be used?

FRP products are ideal for chemical plants, wastewater facilities, offshore platforms, walkways, platforms, stairs, and other areas that require corrosion resistance, lightweight structure, and long service life.

Q3: Do you provide after-sales support?

Yes. We provide clear documentation, installation guidelines (if needed), and technical support. If any quality issue is confirmed after delivery, we offer replacement, rework, or other agreed solutions.

Q4: Can you help with project-specific requirements?

Absolutely. Our team can suggest the right resin system, grating type, and surface finish for your application, and provide drawings or design assistance to ensure project success.