Pipes & ducts are manufactured using the "dual helix" filament winding process on computer controlled machines. By adjusting the relative speed of mandrel rotation and glass distribution head movement, helical reinforced layers with different angles can be wound. In order to increase the pipe stiffness, especially on large diameter pipes, silica sand can be added to parallel layers of wall.
Nominal diameter
Nominal size of pipe and fitting is based on internal diameter. The range of available sizes is 25 to 3000 mm.
Nominal pressure classes:
Pipes and fittings are classified according to nominal pressure. Standard pressure classes are 4, 6, 10, 16, 20 and 25 bars. Intermediate or higher-pressure classes are considered on request or depending on the design parameters and conditions
Nominal lengths
Pipes have a length of six meters up to nd150 and 12 meters for bigger diameters.
Fittings
A wide range of fittings as elbows, reducers, tees, caps, flanges etc. Is available.
Fittings are manufactured by the hand lay-up, contact molding and spray-up process. In hand lay-up and contact molding processes veil and alternate layers of mat and woven roving saturated with resin are applied on the mold. In spray-up process continuous strand roving is fed through a chopper gun, combined with catalyzed resin, and sprayed onto the mould surface
Prefabrication spools
Prefabricated spools save installation time as well as costs, freeing the designer from being limited to standard fittings and allowing junction sizes shapes to be specified and manufactured as a better alternative to a complex series of joints.
Construction
Diameters from 12 inches to 80 feet
Polyester, vinyl ester, novalac vinyl ester, and other resin systems including fire retardant resins
C-glass, nexus, and other synthetic veil interior surface liner systems
Hand lay-up, chop, chop-hoop, and filament wound constructions
Exterior surface treatments including a resin rich topcoat, pigmented gel coat, c-glass veil, nexus veil, or other synthetic veils
Operating temperatures up to 220 deg f depending on the resin system selected
Cylindrical vertical or horizontal with flat, cone, dished or sloped bottom & tops
Rectangular vertical or horizontal
Insulated, gel-coated, heat traced.
Custom design
We have been supplying the fiberglass pins for the american market for nine years, we hope we could have opportunity to work with you with our experience , competitive price and quality product, below is our specification for your information.
Short beam shear strength per astm d4475-02, span:3:1.
Tested result: mean 7788 psi range 7520- 8254 psi
Flexural strength as per astm d-4476.
Tested result: mean 143106 psi range 138201-156563 psi
Flexural modulus as per astm d-4476.
Tested result :mean :4360 ksi range: 4305-4732 ksi
Specific gravity as per astm d-570
Tested result: mean 2.02 range : 1.95-2.05
Water absorption as per astm d-570.
Tested result: mean 0.065 range 0.06-0.079
We could provide fiberglass pins sample to you if you need , and we could make it to according to your requirement.
Pultruded profiles for dry type transformers
We supply pultruded t profiles , moulded compound for end insulation, pultruded i sections , dog bone, pultruded e sections, pultruded l sections , pultruded rectangle profiles, pultruded rod.
