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FRP Products

Pultrusion Process

Pultrusion process is a mechanized process of FRP composite, involves pulling a collection of fiber in the form of roving mat or fabric through a resin batch and then through a heated die to cure the resin and then take shapes of profiles.

Pultrusion Profiles

Pultrusion profilePultrusion profile is a kind of compound materials which is formed by taking fiberglass as the reinforced material, and taking thermosetting resin as base, the fiberglass continuous roving enable the product to have the extremely high longitudinal strength, the fiberglass mat (continuous strand mat, knitted mat and so on) makes the product have the good transverse strength. The thermosetting resin base is usually the unsaturated polyster resin, the vinyl resin, ot the epoxy resin and the phenolic resin, the resin base enable the product to have the good anti-corrosion property, the different resin enable the product to be suitable for various corrosion environment, to add the ultraviolet inhibitor and fire retardant may enable the product to have the outstanding anti-aging property and the different rank anti-inflammable property. Add the nexus mat on the product surface could make it obtain best corrosion-resistance and anti-ageing properties. The fiberglass contecnt in pultrusion profile is usually 45%-75% (weight ratio), the balance is resin and additive. Unsaturated polyester resin and vinyl resin are the most commonly used resin base.

Property Table Of Pultrusion Profiles

Property Direction Unit Test Method Profiles Rods
Tensile Strength (LW) MPa ASTM D638/ GB1447-83 210-350 500-700
(CW) MPa 30-60
Tensile Modulus (LW) GPa ASTM D638/ GB1447-83 15-28 32-42
(CW) GPa 5-7
Flexural Strength (LW) MPa ASTM D790/ GB1449-83 210-390 600-900
(CW) MPa 60-100
Flexural Modulus (LW) GPa ASTM D790/ GB1449-83 15-24 32-42
(CW) GPa 5-7
Compressive Strength (LW) MPa ASTM D695/ GB1448-83 220-350 400-450
(CW) MPa 60-100
Compressive Modulus (LW) GPa ASTM D695/ GB1448-83 16-23
(CW) GPa 5-10
Short Beam Shearing Strength (LW) MPa ASTM D2344 23-35
Breaks Shearing Strength (PR) MPa ASTM D732 38-50 38-55
Impact Strength (LW) KJ/mm2 ASTM D256 150-250
Poission Ratio (LW) mm/mm ASTM D3039 0.3-0.4
(CW) mm/mm 0.15-0.25
Barcol Hardness - ASTM D2583 40-50 50
Relative Density - ASTM D792 1.7-1.9 1.85-1.95
Coefficient of Thermal Expansion (LW) 10-6/m/°C ASTM D696/ GB2572-82 4.5-8 3.0
Breakdown Strength (PF) KV/mm ASTM D149/ GB1408-78 7-8
(LW) KV/mm 1.4-1.6

Features

  • Corrosion resistant
  • Light weight and high strength
  • Anti ageing
  • Easy maintenance
  • Excellent electromagnetism property

Specification Of FRP Pultrusion Profiles

Name Sizes(mm) Name Sizes(mm) Name Sizes(mm)
Square Tube 38 x 38 x 4 Round Tube Φ19/Φ14 Rod Φ12.7
50 x 50 x 4 Φ22/Φ18.4 Φ18
50 x 50 x 5 Φ24/Φ20 Φ22
50.8 x 50.8 x 6.35 Φ25.4/Φ20.5 Φ23.7
80 x 80 x 6 Φ25,4/Φ19 Φ25
100 x 100 x 8 Φ28/Φ24 Φ25.4
Rectangular Tube 42 x 20 x 2 Φ30/Φ26 4 x 12
117.5 x 92.1 x 4.8 Φ31/Φ27 6.35 x 12.7
190.5 x 101.6 x 9.5 Φ31.7/Φ26.7 | - Shape 25 x 15 x 4
Leg Angle 40 x 40 x 4 Φ31.7/Φ26.1 38 x 15 x 4
75 x 75 x 6 Φ31.7/Φ27.5 58 x 15 x 4
75 x 75 x 8 Φ32/Φ26 H-Shape 200 x 100 x 10
Channel 50 x 30 x 5 Φ32/Φ27 T-Profile 25.4 x 40
57 x 60 x 3 Φ32/Φ28 50.8 x 25.4
60 x 50 x 5 Φ32/Φ22 100 x 25.4
70 x 26 x 3 Φ33.7/Φ27.7 120 x 25.4
84 x 30 x 5.5 Φ45/Φ35 Oval Tube 36 x 28 x 2
100 x 35 x 5 Φ50/Φ42 Flat sheet 40 x 4
150 x 40 x 10 Φ75/Φ68 64 x 6.4
200 x 50 x 10 Kick Plate 101.6 x 3 Flooring Panel 600*40
250 x 70 x 10 150 x 5 160 x 25

Special Profiles

Flat rod, kick plate, flat sheet, survey and draw the meter, grating bar, T-profile, oval tube, the large grating panel, the chair reed and so on.


The Custom Profiles

Our company has the strong design and research ability, can produce per the customer’s special request.

FRP Rods and Tubes

FRP rods and tubes are manufactured by high-strength fiberglass as reinforcing material, thermosetting resin as the base, and then taken shape on a special pultruded mold, where the high temperature activities the resin to cure.

frp rods and tubes

Features

Light weight and high strength, anti-ageing, aesthetically pleasing appearance, environmental friendliness.

Specification

Normal Size Φ32*Φ26, Φ32*Φ27.5, Φ32*Φ28, Φ32*Φ22, Φ31*Φ25, Φ30*Φ26, Φ30*Φ24, Φ28*Φ24, Φ28*Φ22, Φ25.4*Φ18.4, Φ24*Φ20,
Φ22*Φ18.4
Surface Effect nexus mat surface, continuous strand mat surface, stitched mat surface, painting surface, wood texture surface
Regular Color yellow, red, blue, green, white, gray

Application

Farming tool: Shovel, hoe, pickaxe, axe, hammer etc.
Gardening tool: grass shears, tree pruner, fencing shears, grass harrow etc.
Cleaning tool: mop, broom, window brush etc.

FRP Pultruded Grating

frp pultruded gratingPultruded grating is made by a particular assembly process, which using “I” shape as its main load-bearing and special rod to go through the bearing bar. Pultruded grating include the standard grating and the custom grating, the customer grating can be designed to meet customer’s requirement or special using condition by changing the shape, size and space of the bearing bars, the surface can be covered with lozenge panel, grit panel, or added the anti-slippery sand directly. FRP pultruded grating has the most characteristics of molded grating, but it has its distinct advantages, it has very high fiberglass content in the loading direction, so it has very high load capability, it has more superiority when used at wide span, so that the basic support will be decreased and the project cost will be reduce accordingly.

Specification

The standard space between two crossbars is 6 inch or 12 inch.

Thikness (mm) Bar Width (mm) Open Space (mm) Open rate (%) Approx Weight (kg/m2)
25.4 15.2 22.8 60 13.2
25.4 15.2 15.2 50 15.9
25.4 15.2 10.1 40 18.5
25.4 40 10.8 21 14.5
38.1 15.2 22.8 60 15.8
38.1 15.2 15.2 50 19.1
38.1 15.2 10.1 40 22.4
50.8 25.4 25.4 50 16.6
50.8 25.4 12.7 33 21.1

Choice For Pultruded Grating

  • Resin: GP resin, ISO resin, VE resin, Phenolic resin
  • Color choice: Yellow, green, gray, custom color
  • Surface choice: Groove surface, grit surface, lozenge cover surface

Features

  • Anti-corrosion and anti-rust
  • Light weight and high strength
  • Anti-flammable
  • Anti-fatigue
  • Safe and anti-slippery
  • Anti-ageing
  • Easy of maintenance
  • Excellent electromagnetism property
  • Good economic benefit

Fields served & Application

Fields served

Sewage treatment
Water supply and drainage
Chemical industry
Oil industry
Power engineering
Pulp and paper
Construction engineering
Spinning, marine engineering

Application

Operation terrace
Stair walkway
Ground floor
Trench cover
Sidewalk
Foot bridge
Equipment safety fence
Scaffold

FRP Tanks and Vessels

Instruction

FRP tanks and vessels can be largely used in many areas of the light industry, petroleum, chemical, food brewing, transportation and so on. Such product can resist the corrosion of various acids, alkalis and salts.

Characteristics

  • High mechanical strength
  • High mechanical inertness
  • Resistance to weathering
  • Low thermal and electrical conductivity
  • Long life
  • Non-toxicity
  • No need for maintenance
  • Light weight



Desing Philosophy

The correct structuring of any kind of G.R.P. tank consist of three distinct types of layers:

  • Chemical Resistant Layer
  • Mechanically Resistant Layer
  • Outer Protective Layer

Other Design Conditions

  • Working pressure, Vacuum
  • Support span
  • Working temperature

Chemical Resistance

Resistance to corrosion in aggressive environments is one the primary reasons for specifying GRP tanks. These resists a wide range of chemicals and temperatures and can be built to provide additional abrasion, weathering and fire resistance. The chemical resistance of GEP tank depends primarily on the resin/glass matrix used. Other factors can affect laminate resistance including liner construction, cure and fabrication methodology and installation techniques.

General corrosion, galvanic, aerobic, pitting, dezincification, graphic and intergranular corrosion harm metals but no GRP.

Production Range

FRP small-scale storage tank: Diameter ≤ 4M

Large-scale jobsite winding vertical storage tank: Diameter 4200mm-25000mm.

Technical Data

No. Item FRP Tank Of Workshop Production Field Winding Vertial Storage Tank
1 1.65-1.8g/c2
2 DENSITY 120-180MPa ≥ 300MPa
3 CIRCUMFERENTIAL TENSILE STRENGTH 1.41-2.45 X 104 ≥ 2.9 X 104MPa
4 CIRCUMFERENTIAL TENSILE ELASTIC MODULUS 45-60MPa ≥ 25MPa
5 AXIAL TENSILE STRENGTH 1.09-1.27 X 104MPa ≥ 2.5 X 103MPa
6 AXIAL TENSILE ELASTIC MODULUS 240MPa
7 COMPRESSIVE STRENGTH 1.5 X 105t/m2
8 IMPACT STRENDGTH 1.07 X 10-5m/m.c
9 THERMAL EXPANSION COEFFICIENT 0.28-3.2m/m.k
10 HEAT CONDUCTIVITY ≥ 36
11 BARCOL HARDNESS 0.016
12 FOOD STORAGE TANK RESIDUAL PHENYLESSIG CONTENT <0.2%
13 FRICTIONAL RESISTANCE COEFFICIENT 0.016

NOTE: Our Customer Relationship executives will provide you with the product / equipment specific information once you advise your requirement.