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Tired of flanges that corrode quickly, drive up replacement costs, and delay your operations? Our 2 1/2 inch FRP flange delivers unmatched durability for chemical, water, and industrial piping—trusted by US purchasing managers for 30% lower lifetime costs.
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As a purchasing manager sourcing 2 1/2 inch flanges for industrial pipelines, you face relentless pressure on ROI. Here's what typical metal flanges cost you:
Don't let these issues erode your margins. See our FRP solution below.
From Hebei Longxuan's powerful factory in China, our 2 1/2 inch FRP flange (aka 2.5 inch fiberglass flange) outperforms metal options with corrosion resistance, custom OEM/ODM design, and high-speed delivery—direct to USA ports in 3-4 weeks.
| Parameter | Specification |
|---|---|
| Nominal Size | 2 1/2 Inch (DN65) |
| Material | FRP (Vinyl Ester Resin + E-Glass Fiber) |
| Pressure Rating | 150 PSI (PN10) |
| OD / Thickness | 178mm / 12mm |
| Bolt Circle | 4 x 19mm holes @ 140.5mm PCD |
| Standards | ANSI B16.5, ISO 7005 |
| Temp Range | -50°C to 120°C |
Ideal for corrosion resistant 2 1/2 inch flanges in:
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"Switched to Longxuan's 2 1/2 inch FRP flanges—cut costs 35% and no corrosion in our wastewater system." – Operations Mgr, US Water Utility (saved $15K/year).
Certified Compliant: ISO 9001, CE, RoHS, FDA (for contact), ASTM standards. Full details on request.
Connects FRP pipes in corrosive environments like chemicals, desalination—lightweight, non-conductive alternative to steel.
Yes, OEM/ODM from 100 units. Matches ANSI Class 150 specs.
3-4 weeks sea freight to major ports; express air for samples.

T/T, L/C accepted. Fully RoHS/CE/FDA compliant; CO provided.
1-year warranty, free tech support via WhatsApp/Email.
30% below US market, volume discounts from $15/unit.
Limited stock: Order now for Q1 2026 delivery. Free samples for qualified buyers + 60-day money-back guarantee.
WhatsApp: +86 18631823130 | Email: longxuanfrp@gmail.com
Hebei Longxuan Environmental Protection Equipment Co., Ltd. | 20 Xingyuan South Street, Zaoqiang County, Hengshui City, Hebei, China. Privacy policy: here.
Mike R., Supply Chain Mgr, Texas Chemical Plant: "Perfect fit for our ANSI 2 1/2 inch flanges. No rust after 18 months—saved us $12K!"
Sarah L., Ops Director, Florida Water Treatment: "High-quality FRP, fast delivery. Quality beats local suppliers hands down."
Tom K., Technical Dir, California Power Co.: "OEM customization was spot-on. 40% cheaper than competitors with better service."
Dr. Li Wei, Senior FRP Engineer & Export Director
With 25+ years in fiberglass reinforced plastics at Hebei Longxuan, I've led 500+ OEM projects for US/EU clients. Featured in CompositesWorld magazine. Contact: longxuanfrp@gmail.com
Customization can include size, material, structure, surface treatment, color, performance parameters, and packaging based on customer requirements.
Basic requirements such as drawings, dimensions, application details, technical specifications, and expected quantity are usually required.
Minimum order quantity depends on the product type and customization complexity. Please contact us for specific MOQ details.
Lead time varies depending on design complexity and production volume, but samples are typically completed before mass production.





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20 Xingyuan South Street, Zaoqiang County, Hengshui City, Hebei Province, China