• Direct Roving for Filament Windling 308H

    Direct Roving for Filament Windling 308H


308H direct roving is produced with the E6 glass formulation and coated with a silane-based sizing composition.It is specially designed for reinforcing epoxy resin

and suitable for both amine and anhydride curing systems.


308H sizing composition gives strong resin-to-glass bonding,which results in excellent mechanical and anti-fatigue properties of the end composites. The product

is designed for the high tension winding process.Typical applications include small bore sucker rods,high pressure pipes,storage tanks and pressure vessels.

Product performance introduction


Product Features


  • Good abrasion resistance under high tensions and smooth run-out

  • High retention rate in boiling water

  • Excellent mechanical properties and fatigue resistance

  • Excellent mechanical properties
  • Good acid corrosion resistance




Glasstype E6
Sizingtype Silane
Typicalfilamentdiameter(μm) 17 21 24









Technical Parameters



Linear density variation

Moisture content

Sizing content

Breakage strength






Test menthod

ISO 1889

ISO 3344

ISO 1887

ISO 3341

Standard range

±5(<600 tex)

±4(≥600 tex)





Mechanical Properties


Mechanical properties




Test menthod

Tensile strengtt

MPa  (Ksi)

2675.0 (388.0)


ASTM D2343

Tensile modulus

GPa (Msi

82.2 (11.9)


ASTM D2343

Shear strength

MPa  (Ksi)

74.0  (10.7)


ASTM D2344

Strength retention(72 hr boiling)








  • The product is best used within 12 months after production, and should be kept in the original package before use.
  • Care should be taken when using the product to prevent it from being scratched or damaged.
  • The temperature and humidity of the product should be conditioned to be close or equal to the ambient temperature and humidity before use, and the ambient temperature and humidity should be properly controlled during the use.
  • The cutter rollers and rubber rollers should be maintained regularly




For detailed package size information, please download the product manual to view!




Unless otherwise specified, the fiberglass products should be stored in a dry,cool and moisture-proof area.The best temperature and humidity should be maintained at -10~35and ≤80% respectively. To ensure safety and avoid damage to the product, the pallets should be stacked not more than three layers high. When the pallets are stacked in two or three layers, special care should be taken to correctly and smoothly move the upper pallet.


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Direct Roving for Filament Windling 308H


Chemistry and Chemical / Infrastructure / Marine / Petrochemical / Building and Construction

  • Glass type :
  • Sizing type :
  • Typical filament diameter (μm) :
    17 | 21 | 24
  • Typical linear density (tex) :
    (1100 / 2000 | 1200/2400)|2000|(2400|4800)
  • Example :


Q :

Are you a factory? Where are you located?

A :

We are manufacturer of FRP grating and pultruded profiles, trader of FRP yarn materials. We are the largest distributor of China Jushi Co. We also sell products of several FRP yarn manufacturers. We are in Anhui, China.

Q :

What information is recommended for the inquiry?

A :

1. Which tex you need? 2. What the application you use it for? Or the tecnologh, is weaving, pultrusion or winding? 3. How many quantity do you need? 4. What resin do you combined for? Polyester resin or epoxy resin? 5. Do you need FOB or CIF price, if CIF, please tell us your port.

Q :

What's the MOQ?

A :

Usually 1 Ton

Q :

Package & Shipping

A :

Normal package:carton(Incuded in the unite price) Special Packge: need to charge according the actual situation. Normal shipping :your nominated Freight forwarding.

Q :

When can I offer?

A :

We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price pls call us or tell us in your email , so that we can reply you priority.

Q :

How do you charge the sample fees?

A :

If you need a samples from our stock, we can provide to you for free, but you need to pay the freight charge.If you need a special size, We will charge the sample making fee which is refundable when you place an order.

Q :

What's your delivery time for production?

A :

If we have stock , can delivery in 7 days ; if without the stock, need 7~15 days !

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