GRP pipes
Filament-wound water, sewage and industrial pipe.
Unsaturated polyester resins · Manufacturer, India
Isophthalic & Orthophthalic Polyester Resins for FRP Manufacturers
Ortho, iso and iso-NPG unsaturated polyester resins for GRP pipes, tanks, panels, sanitaryware, boats and pultruded profiles — made and batch-tested at our own plants in India.
- Manufacturer since 1989
- 2 plants in India
- COA · SDS · TDS
- Since 1989Polymer resin manufacturer
- 2 plants in IndiaKheda, Gujarat · Dharwad, Karnataka
- COA every batch4-step QC, retained samples
- Technical supportGrade selection by resin chemists
- Ortho, iso and iso-NPG grades
- Hand lay-up, spray-up, filament winding, pultrusion
- Pre-accelerated to your shop conditions on request
Manufacturer, not trader
FOB / CIF
Mundra · Nhava Sheva
Drums & IBC
MOQ: 1 trial drum
COA · SDS · TDS
UPR product range
Unsaturated Polyester Resin grades we supply
Choose by service conditions and process. Typical properties — viscosity, gel time, HDT, cure schedule — are in each grade's TDS.
| Grade type | Typical applications | Why it is specified |
|---|---|---|
| Orthophthalic (ortho) UPR | General moulding, panels, sheets, sanitaryware, hand lay-up | Economical general-purpose resin |
| Isophthalic (iso) UPR | GRP pipes and tanks, filament winding, pultruded gratings and profiles | Better water, chemical and heat resistance than ortho |
| Iso-NPG UPR | Boat hulls, decks and marine laminates | Iso-NPG backbone for improved water resistance |
Grades can be tuned for gel time, thixotropy and promotion to suit your process and shop temperature.
Applications
Where FRP manufacturers use our unsaturated polyester resin
Tanks
Water and light-chemical storage tanks.
Panels & sheets
Roofing sheets, sandwich and cladding panels.
Sanitaryware
Bathtubs, shower trays and cultured marble.
Boats & marine
Hulls, decks and marine laminates.
Pultruded profiles
Gratings, cable trays and structural profiles.
- Manufacturing plant
- Reactor hall
- QC laboratory
- Drum & IBC packing
- Container loading
Why manufacturers choose Crest
A resin manufacturer, not a trader
Crest Speciality Resins has made polymer resins in India since 1989. You deal directly with the manufacturer — the team that cooks the batch, tests it and signs the COA.
1989Year founded
2Plants — Kheda & Dharwad
4-stepQC on every batch
COAWith every drum
Quality testing on every batch
- Raw material checkIncoming glycols, acids, epoxy and monomer tested before release to the reactor.
- In-process controlAcid value, viscosity and gel time tracked through every batch cook.
- Finished-batch testingViscosity, gel time, non-volatile content and cure profile checked against the grade TDS.
- COA & retained sampleEvery drum ships with a batch COA; a retained sample is kept for traceability.
Supply & export terms
Shipped from India, documented for your customs
Clear terms up front so you can compare landed cost.
Incoterms
FOB or CIF — quoted to your nearest port.
Loading ports
Mundra & Nhava Sheva (JNPT), West India.
Packing
220 kg steel drums · 1,000 kg IBC totes.
MOQ
1 trial drum to qualify the grade, then pallet or FCL.
Lead time
Confirmed on your quotation for the grade and quantity.
Technical support
Grade selection with our resin chemists before you order.
Documents with every shipment:
- COA per batch
- MSDS / SDS
- TDS
- Certificate of Origin
- HS code on PI (3907 series)
Industries
Industries that specify unsaturated polyester resin
What FRP fabricators in each sector build with these resin systems.
Chemical plants
Acid and solvent storage tanks, process vessels, fume ducting and piping.
Fertilizer
Acid storage, scrubbers, prilling-tower ducts and effluent lines.
Wastewater & desalination
GRP pipe, RO-plant piping, clarifier covers and odour-control scrubbers.
Petrochemical
Storage tanks, fire-water and cooling-water pipe, gratings and cable trays.
Building & construction
Roofing sheets, cladding panels, sanitaryware and cultured marble.
Marine
Hulls, decks, liners and fittings for work boats and leisure craft.
Not sure which grade fits? Tell us the part, the chemicals and the operating temperature — our resin chemists will recommend a system.Talk to a technical expert
Need technical data for evaluation?
Request the UPR TDS (properties, cure schedule, storage) or SDS for your grade — emailed by our team.
Buyer questions
Before you order
Iso or ortho — which do I need?
Ortho is the economical choice for general moulding. Iso and iso-NPG give better water, chemical and heat resistance for pipes, tanks and marine parts. Tell us your process and we will match the grade.
Do you supply pre-accelerated resin?
Yes, most grades can ship pre-accelerated and tuned to your shop temperature and target gel time.
Can I test before ordering a full container?
Yes. Order 1 trial drum (220 kg) first, then scale to pallet or FCL.
What information do you need for a quotation?
Product or application, estimated quantity, destination country/port and preferred Incoterm (FOB or CIF). For corrosion service, add the chemical, concentration and operating temperature so we can recommend the right grade.
Can Crest provide TDS and SDS before I order?
Yes. Use “Request TDS / SDS” on this page and we email the documents for the grade you are evaluating. Every shipment also carries a batch COA, MSDS/SDS, TDS and Certificate of Origin.
Do you supply internationally?
Yes. We quote FOB or CIF from Mundra or Nhava Sheva (JNPT) and pack in 220 kg drums or 1,000 kg IBCs.
Tell us about your unsaturated polyester resin requirement
Share grade or application, quantity and destination port. Our technical team will help identify the right product and send your quotation.