What is the difference between electroforged and manually welded gratings?

Electroforged gratings are produced on PLC-controlled machines that apply more than 100 tonnes of hydraulic pressure and approximately 2200 A of current to fuse every cross bar into the bearing bar, creating a seamless joint with no open welds. Manually welded gratings are fabricated panel by panel and are preferred for non-standard shapes, heavy bar sections and complex cut-outs.

Which stainless steel grade should I choose for coastal or chemical environments?

AISI 304 suits most food, pharmaceutical and indoor process areas. AISI 316 contains molybdenum and is recommended for marine, coastal and chloride-rich chemical environments. AISI 309 is used where higher temperature resistance is needed. Gratings are acid washed and electro-polished after welding.

Can gratings be fabricated with cut-outs, toe plates and banding?

Yes. Round, square and edge cut-outs can be incorporated in pressure-welded and electroforged panels, and every cut-out is banded with flat bar. Custom panels are typically produced in widths from 250 mm up to 1200 mm with lengths as required by the project drawing.

What information is needed to evaluate a grating requirement?

Share the bearing bar size, bar pitch, cross bar pitch, panel dimensions, material grade, surface finish, design load or span, quantity, required standards and destination port. Layout drawings speed up engineering review.

Is FRP grating a suitable replacement for steel grating?

FRP and fiberglass gratings weigh much less than steel, do not corrode and are non-conductive, which makes them suitable for chemical plants, water treatment, offshore and electrical areas. Load capacity depends on panel depth and span, so the section should be selected against the design load.

Modern Design Style GRP Phenolic Grating Molded and Pultruded

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Modern Design Style GRP Phenolic Grating Molded and Pultruded

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Product Description

GRP Phenolic Grating (Molded & Pultruded): Engineered for maximum fire resistance, structural durability, and corrosion protection across marine, offshore, and heavy chemical industrial environments.

1. Product Pictures of Phenolic Grating

2. Product Description of Phenolic Grating

#	Mesh Size (mm)	Height (mm)	Max Panel Size (mm)	Weight (kg/m²)	Resin
1	25.4×25.4 up / 50.7×50.7 down	15	1220×3660	7.2	GP, Iso, VE
2	38.1×38.1	15	1220×3660	6.5	GP, Iso, VE
3	20×20 / 40×40	15	1247×4047	11.5	GP, Iso, VE
4	12.7×12.7×12.7 / 38×38	20	970×3434	18.5	GP, Iso, VE
5	38.1×38.1	25	1225×3665	12.3	GP, Iso, VE
6	40×40	25	1007×4047	12.2	GP, Iso, VE
7	19×19 / 38×38	25	1220×4005	14.2	GP, Iso, VE
8	25×100 (bearing bars width direction)	25	1009×3007	13.8	GP, Iso, VE
9	25.4×101.6 (bearing bars width direction)	25	1220×3660	12.5	GP, Iso, VE
10	25.4×101.6 (bearing bars length direction)	25	1225×3665	12.2	GP, Iso, VE
11	38.1×38.1	30	1525×4008	14.6	GP, Iso, VE
12	40×40	30	1007×4047	14.5	GP, Iso, VE
13	20×20 / 40×40	30	1247×4047	17.8	GP, Iso, VE
14	12.7×12.7×12.7 / 38×38	30	1220×4040	22.0	GP, Iso, VE
15	26×26 / 52×52	30	1150×4011	13.6	GP, Iso, VE
16	38.1×38.1	38	1525×3969	19.0	GP, Iso, VE
17	40×40	38	1007×4047	18.8	GP, Iso, VE
18	25.4×152.4 (bearing bars length direction)	38	1226×3665	20.4	GP, Iso, VE
19	38.1×101.6 (bearing bars length direction)	38	1220×3660	14.5	GP, Iso, VE
20	20×20 / 40×40	38	1247×4047	22.0	GP, Iso, VE
21	40×40	40	1247×4047	20.0	GP, Iso, VE
22	220×60	40	1507×2207	9.2	GP, Iso, VE
23	20×20 / 40×40	40	1207×4047	23.7	GP, Iso, VE
24	50.7×50.7	50	1225×3660	23.5	GP, Iso, VE
25	25.35×25.35 / 50.7×50.7	50	1220×3660	26.0	GP, Iso, VE
26	38.1×152.4 (bearing bars length direction)	50	1220×3660	20.8	GP, Iso, VE
27	38.1×38.1	50	1225×3665	40.5	GP, Iso, VE
28	38.1×38.1	63	1220×3660	38.5	GP, Iso, VE
29	38.1×38.1	63	1230×3670	52.0	GP, Iso, VE
30	38.1×38.1	P25	1220×3660	11.5	Phenolic
31	38.1×38.1	P30	1220×3660	13.5	Phenolic
32	38.1×38.1	P38	1220×3660	17.0	Phenolic
33	50.7×50.7	P50	1225×3660	21.5	Phenolic

About Our Products:

Resin Options: Ortho Polyester (GP), Iso Polyester (ISO), Vinyl Ester (VE), Phenolic

Thickness Range: Any thickness from 12.6mm to 63mm (e.g., 12.6mm, 15mm, 20mm, 25mm, 30mm, 33mm, 38mm, 40mm, 50mm, 63mm)

Mesh Sizes: 1.5"×1.5", 2.0"×2.0", 1.0"×4.0", 1.0"×6.0", 1.5"×6.0", mini mesh 20×20 (up) / 40×40mm (down), 19×19 / 38×38mm, 12.6×12.6×12.6 / 38.1×38.1mm

Panel Dimensions: 3'×8', 3'×10', 3'×12', 4'×8', 4'×10', 4'×12', 5'×13' (custom precision cuts available)

Surface Finishes: Grit top, concave, smooth, covered plate

Standard Colors: Green, yellow, grey, red, black, or custom client specifications

Chemical Resistance: VE > ISO > GP

Special Gratings: Static conductive grating, translucent grating

Covered Grating: 3–10mm FRP plate molded on grating; top surface smooth, grit top, or chequered plate

Install Clips: Type M, L, C, J in Stainless Steel 316L

Pultruded Grating: T-bar and I-bar; thicknesses of 1", 1.5", 2"; open rates 33%, 40%, 50%, 60%

Extended Products: FRP pultruded profiles, handrail systems, stair treads, stair nosings, anti-slip plates, tactile tiles, electrolysis anode/cathode separation brackets, custom designs

Packaging: Heavy-duty metal pallets

Fire Resistant Standard: ASTM E84

Flame Speed Index: = 15 (GP, ISO resin) | = 10 (VE) | = 0 (Phenolic)

Smoke Development Index: = 310 (GP, ISO, VE) | = 0 (Phenolic)

About Factory

Founded in 1992. ISO9001:2000 certified since 1999, along with ABS Certificate. Modern 20,000 sqm workshop with cutting-edge equipment. Premier manufacturing scale and export capacity in China, serving the USA, Europe, Australia, and the Middle East.

Professional Service

Expert export coordination by Shanghai sales management (Chemical Engineering Master's degree), full custom design engineering, and dedicated QC engineers to deliver tailored specifications.

3. Applications of Phenolic Grating

Company Information

1. About Us

Our factory was founded in 1992. After more than 20 years of development, our company has become an expert in Fiberglass / FRP / GRP raw materials and finished products in China.

As a FRP/GRP leader in China, we have achieved fruitful development over the past decades. Our FRP products made from composite materials have been widely accepted across global markets. Materials include fiberglass, SMC, BMC, and specialized resin systems.

Rich manufacturing experience and global export logistics represent our core competitive advantages. Our facility scale and product quality consistently rank at the top in China, backed by dedicated design engineering and quality assurance teams.

2. Why Choose Us

Industry Leadership

Maintains leading industry standing in terms of production volume, advanced technology, global market presence, and sustained reliability.

Direct Factory Pricing

Factory-direct pricing aligned with current market conditions. Facility visits are welcome at any time.

Versatile Product Portfolio

Extensive selection of high-grade fiberglass composite products combined with attentive customer service.

Customer-First Value

Committed to total customer satisfaction with recurring commercial discounts and long-term partnership incentives.

3. Certifications & Quality Assurance

ABS Certification: Certified and audited annually by ABS for marine safety and mechanical integrity.

ISO 9001 Standard: Operating under certified ISO 9001 quality management processes.

QA/QC Protocol: Comprehensive in-house testing equipment, batch tracking, and rigorous laboratory analysis.

4. Global Markets

5. Contact Information

Frequently Asked Questions (FAQ)

What makes GRP Phenolic Grating superior in fire resistance?

Under ASTM E84 testing, phenolic resin achieves a Flame Speed Index of 0 and a Smoke Development Index of 0. This extreme fire and low-smoke performance makes it the material of choice for offshore drilling platforms, marine vessels, and high-hazard industrial settings.

Which resin types are available for molded and pultruded gratings?

We supply Orthophthalic Polyester (GP), Isophthalic Polyester (ISO), Vinyl Ester (VE), and Phenolic resins to match varying environmental factors, thermal levels, and acid-alkali chemical resistance requirements.

Can panel sizes and grating thicknesses be customized?

Yes. Standard thicknesses range from 12.6mm up to 63mm (including 25mm, 30mm, 38mm, 50mm, and 63mm). Standard panel dimensions reach up to 5'×13' (or 1525×4008mm) and can be custom cut according to specific engineering layouts.

What surface treatments are offered for anti-slip protection?

Surfaces can be finished with an integrated concave top, quartz grit top for heavy slip resistance, smooth top, or molded with solid 3–10mm flat/chequered FRP covered plates.

What third-party certifications does your factory hold?

Our facility has maintained ISO 9001 certification since 1999 and holds annual ABS (American Bureau of Shipping) factory and product approvals for marine engineering use.

Which installation accessories are recommended for GRP gratings?

We provide comprehensive installation hardware made of marine-grade 316L stainless steel, including Type M, Type L, Type C, and Type J clips to secure gratings onto structural support beams.

Modern Design Style GRP Phenolic Grating Molded and Pultruded

Product Description

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