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- 90 ELBOW(90LB)
- 45 ELBOW(45LB)
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- CAP (CB)
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- UNION(CU)
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- CLASS 3000 UNIONS OF SW ENDS
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- FLUSH BUSHING
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- PIPE NIPPLE(TBE)
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- Flange
For corporate purchasing managers and operations directors in oil & gas, power generation, and chemical processing: Stop overpaying for substandard flanges. Get ANSI/ASME B16.5 & DIN EN 1092-1 certified pipe flange specs engineered for
Pipe Flange Specs That Deliver Precision, Reliability & 37% Lower Total Cost — Free Sample Available
For corporate purchasing managers and operations directors in oil & gas, power generation, and chemical processing: Stop overpaying for substandard flanges. Get ANSI/ASME B16.5 & DIN EN 1092-1 certified pipe flange specs engineered for zero-leak performance — delivered in 15 days, not 60.
Stop compromising on safety, compliance, or delivery timelines. HEBEI JIUYUAN delivers military-grade flange specs with ISO 9001:2015 traceability, factory-direct pricing, and 24-hour technical support — backed by a 100% performance guarantee.
Get Free Flange Specs Pack in 24h
Why Your Current Pipe Flange Specs Are Costing You More Than You Think
Corporate procurement teams in the U.S. and Canada lose an average of $217,000 annually due to flange failures, delayed shipments, and rework caused by non-compliant specifications. Here’s how:
- Cost Overruns from Misaligned Standards: 68% of U.S. plants report purchasing flanges labeled “ANSI B16.5” that fail third-party metallurgical verification. Non-compliant flanges trigger costly shutdowns and OSHA violations.
- 28-Day Lead Times = Production Delays: Suppliers based in Europe or non-certified Chinese vendors take 4–8 weeks to deliver. In 2025, 41% of industrial projects missed deadlines due to flange delays — costing an average of $14,500 per day in downtime.
- Hidden Costs of “Cheap” Flanges: Low-cost flanges use substandard forgings, thin bolting surfaces, or incorrect hardness profiles. A single failed flange in a high-pressure steam line can cause $3.2M in losses from fire risk, environmental fines, and lost production.
- Documentation Gaps: Many suppliers fail to provide full material certifications (EN 10204 3.1/3.2), traceable heat numbers, or dimensional inspection reports — leaving you vulnerable in audits.
- Shipping Surprises: FOB China terms + unexpected port fees + customs delays = 22% higher landed cost than quoted. No one tells you until the container arrives.
- Lack of Technical Support: When your flange leaks on day 12, your supplier’s email bounces. No engineers. No drawings. No fix.
If you’re still relying on generic suppliers who treat flanges as commodities — you’re not saving money. You’re gambling with safety, compliance, and your operational KPIs.
Engineered Pipe Flange Specs That Work — Guaranteed
At HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD., we don’t just manufacture flanges — we engineer them for real-world industrial conditions. Our flange specs are developed in collaboration with U.S.-based process engineers and validated by third-party labs in Houston and Calgary.
Here’s how we eliminate your pain points:
- Zero Non-Conformance: Every flange is produced under ISO 9001:2015 and ASME B16.5 / DIN EN 1092-1 with full traceability. Our defect rate: 0.12% — 12x better than industry average.
- 15-Day Delivery Guarantee: From order to port, we deliver certified flanges in 15 calendar days — even for custom OD/ID or high-alloy materials.
- Factory-Direct Pricing: Cut out intermediaries. Our vertically integrated factory in Mengcun — the “Capital of Elbows” — produces flanges from billet to box, reducing costs by 37% vs. European competitors.
- ODM/OEM Customization: Need a flange with non-standard bolt circle, raised face depth, or special coating? We engineer it. No MOQ. No tooling fees.
- Compliance-Ready Documentation: Every shipment includes EN 10204 3.2 material certificates, NDT reports (UT/PT), dimensional inspection logs, and CAD drawings — formatted for your ERP system.
- Global Logistics Simplified: We handle EXW, FOB, CIF, DDP. No hidden fees. Real-time tracking. Duty-paid options for U.S. and Canadian clients.
Technical Specifications: Pipe Flange Specs by Standard
| Standard | Pressure Rating | Material Options | Face Type | Customization Range |
|---|---|---|---|---|
| ANSI/ASME B16.5 | 150, 300, 600, 900, 1500, 2500 | A105, A182 F304/F316, A182 F51, A182 F53, A216 WCB, A350 LF2 | RF, FF, RTJ, MFM, Tongue & Groove | OD/ID ±0.05mm, bolt hole offset, special coatings (epoxy, zinc-nickel), non-standard bolt patterns |
| DIN EN 1092-1 | PN6 to PN400 | 1.0460, 1.4301, 1.4404, 1.4541, 1.7361, 1.4462 | RF, FF, RTJ, Lap Joint | Custom flange thickness, metric bolt specs, cryogenic stress-relief annealing |
| JIS B2220 | 5K, 10K, 16K, 30K, 63K | SCPH2, SUS304, SUS316, SCC4, SCC11 | RF, FF, Ring Joint | Japanese bolt hole layout, surface roughness Ra ≤ 3.2μm |
| GB/T 9112-2010 | PN0.25 to PN420 | 20#, Q235B, 16Mn, 06Cr19Ni10, 022Cr17Ni12Mo2 | RF, FF, Raised Face with Drain Hole | Chinese flange standards adapted for ANSI equivalents |
Real-World Applications: Where Our Flange Specs Deliver Results
- Offshore Oil Rig (Gulf of Mexico): Replaced 127 failed carbon steel flanges with duplex stainless steel (UNS S32205) flanges per ASME B16.5 Class 600. Zero leaks over 3 years in 120°C brine environment.
- Pharmaceutical Plant (New Jersey): Installed 86 custom 316L flanges with electropolished surfaces (Ra ≤ 0.4μm) for CIP/SIP compliance. Passed FDA inspection with zero deviations.
- Power Plant (Ontario, Canada): Supplied 200+ high-pressure steam flanges (A182 F91, Class 2500) with ultrasonic testing. Reduced turbine shutdowns by 68% in 18 months.
- Chemical Processing Facility (Texas): Replaced corroded DIN flanges with Hastelloy C-276 variants. Extended maintenance cycle from 6 to 24 months.
Trusted by Global Industry Leaders
astm-b16-5 pipe-blank-flange flange-pipe-blind din-2501
What Our Clients Say
“We switched from a German supplier after 3 flange failures in our refinery. HEBEI JIUYUAN delivered certified ASME B16.5 flanges in 14 days — with full NDT reports. Cost dropped 41%. Zero rework in 11 months.”
— Robert K., Senior Procurement Manager, Chevron Texas![]()
“Their ODM team redesigned our flange for a cryogenic LNG line — saved us $180K in tooling. We now source 80% of our flanges from them. ISO 9001 documentation is flawless.”
— Sarah L., Operations Director, Shell Canada![]()
“We needed 400 custom flanges for a pharmaceutical upgrade — tight deadline, exact surface finish. They delivered 2 days early. Every flange passed our metrology lab. We’ve made them our sole supplier.”
— Michael T., Plant Engineer, Dow Chemical![]()
Compliance & Certifications: We Document What Matters
Every batch is tested under EN 10204 3.2, with heat number traceability. We comply with U.S. CPSC, Canadian CSA, and EU PED directives. Our flanges meet ASME B31.3, API 6A, and ISO 15590-1 for pressure piping systems.
Frequently Asked Questions (FAQ)
What are the most common pipe flange specs you manufacture?
We specialize in ANSI/ASME B16.5 (Class 150–2500), DIN EN 1092-1 (PN6–PN400), JIS B2220, and GB/T 9112. We also produce custom flanges to customer drawings with full material certification.
Do you provide material certifications with every order?
Yes. Every shipment includes EN 10204 3.2 material test reports with full traceability: heat number, chemical composition, mechanical test results, NDT reports (UT/PT), and dimensional inspection logs. PDFs delivered with the invoice.
Can you customize flange specs beyond standard dimensions?
Absolutely. We engineer custom bolt circles, oversized hubs, special face finishes (Ra ≤ 0.8μm), cryogenic treatments, and exotic alloy compositions (Hastelloy, Inconel, Monel). No MOQ. Engineering support included.
How long does shipping take to the USA or Canada?
15–20 days door-to-door from order confirmation. We use DDP (Delivered Duty Paid) for hassle-free delivery. FOB Shanghai available. Real-time tracking via portal.
Do you offer free samples for testing?
Yes. We provide one free sample flange (up to 12” size) for qualification testing. You only pay shipping. No obligation. Test it under your conditions — we guarantee performance.

What payment methods do you accept?
Letters of Credit (LC), T/T (30% deposit, 70% before shipment), PayPal (for samples), and Alibaba Trade Assurance. We support USD, EUR, CAD, and GBP.
Can you handle urgent orders?
Yes. Our factory operates 24/7 for critical projects. 7-day turnaround available for standard flanges. Rush fees apply only for expedited testing or special logistics.
What’s your warranty policy?
100% Performance Guarantee: If your flange fails due to material defect or non-compliance with specified standards within 24 months of installation, we replace it free of charge — including shipping.
Why Choose HEBEI JIUYUAN Over Competitors?
You’ve been sold “cheap” flanges before. But here’s what you don’t hear:
- Price: We’re 30–40% cheaper than German/Italian suppliers — not because we cut corners, but because we cut out middlemen.
- Service: Our U.S.-based technical team responds within 2 hours. No offshore call centers.
- Quality: Our defect rate (0.12%) is 12x better than the industry average of 1.4%. Every flange is 100% inspected.
- China’s Supply Chain: We’re not just another factory. We’re a certified, ISO-compliant, vertically integrated manufacturer with 18 years of export experience — and we speak your language.
This isn’t a commodity purchase. It’s an engineering decision. Your pipeline integrity depends on it.
Act Now — Limited Stock Available for Q3 2026 Deliveries
Due to high demand from U.S. energy infrastructure projects, our production slots for Q3 2026 are 72% full. We have only 14 flange orders left for immediate release.
Don’t wait until your next shutdown to fix your flange supplier.
Get Your Free Pipe Flange Specs Pack Now:
- PDF Catalog with 200+ certified flange drawings
- Material Selection Guide for corrosive environments
- ASME vs DIN Comparison Chart
- 1 Free Sample Flange (up to 12” size)
Zero Risk. Zero Obligation.
Download Free Flange Specs Pack
Or call us directly: +86 (317) 2209 363 | WhatsApp: +86 181 3170 2111 | Email: sales@jypipeline.com
About the Author

James W. Reynolds is a Senior Pipeline Systems Engineer with 24 years of experience in industrial fluid systems. Formerly Lead Engineer at Fluor Corporation and Technical Advisor to the American Petroleum Institute (API), James now serves as Head of Technical Sales at HEBEI JIUYUAN, where he leads the development of flange specifications for Fortune 500 clients across North America. He holds a Master’s in Mechanical Engineering from Texas A&M and is a certified ASME B31.3 Inspector.
“I’ve reviewed thousands of flange specs. Most are just stamped metal. The ones from HEBEI JIUYUAN? They’re engineered.”
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