- Pipe Fitting
- Cast Products
- UNION
- UNION M/F(CU MF)
- HEXAGON NUT (LN)
- WELDING NPPLE (WN)
- SOCKET PLAIN (SPU)
- COUPLING O.D.MACHINED (SPE)
- 90 ELBOW(90LB)
- 45 ELBOW(45LB)
- STREET ELBOW(SLB)
- CAP (CB)
- BARREL NIPPLE (BN)
- SOCKET BANDED(SB)
- UNION(CU)
- REDUCING SOCKET BANDED (RSB)
- REDUCING TEE (RTB)
- REDUCING HEXAGON NIPPLE(RHN)
- SQUARE PLUG (SQ)
- CROSS (十B)
- TEE(TB)
- HOSE NIPPLE (HON)
- HEXAGON NIPPLE(HN)
- HEXAGON PLUG (HP)
- HEXAGON HEAD CAP(HCB)
- HEXAGON BUSHING(HB)
- Forged Products
- SW Coupling
- ECCENTRIC SWAGED NIPPLE
- FEMALE AND MALE THREADED 90° ELBOW
- HRD OUTLETS
- THREADED CROSS
- THREADED TEE
- THREADED CAP
- THREADED 90° ELBOW
- THREADED 45° ELBOW
- HEX HEAD BUSHING
- HEX HEAD PLUG
- NIPOLETS
- SQUARE HEAD PLUG
- BW OUTLET
- PIPE NIPPLE(TOE)
- Half-Coupling
- SW Half-Coupling
- SW OUTLETS
- SW REDUCER INSERTS TYPE2
- SW REDUCER INSERTS TYPE1
- SW
- SW Tee
- SW CAP
- SW45° LATERAL
- SW90° Elbow
- SW45° Elbow
- BOSS
- CLASS 3000 UNIONS OF SW ENDS
- CLASS 3000 UNIONS OF THRD ENDS
- ROUND HEAD PLUG
- REDUCING HEXAGONAL NIPPLE
- FLUSH BUSHING
- CONCENTRIC SWAGED NIPPLE
- STRAIGHT HEXAGONAL NIPPLE
- PIPE NIPPLE(TBE)
- TSW Coupling
- Flange
Stop overpaying for substandard 1 inch pipe flanges — Get ASME B16.5 Class 150/300 certified, ISO 9001 -tested flanges from China’s top-tier manufacturing hub — with 72-hour global shipping and no minimum order .
1 Inch Pipe Flange: Precision-Built for Reliability, Delivered in 72 Hours — Free Sample Available
Stop overpaying for substandard 1 inch pipe flanges — Get ASME B16.5 Class 150/300 certified, ISO 9001-tested flanges from China’s top-tier manufacturing hub — with 72-hour global shipping and no minimum order.
Designed for Corporate Purchasing Managers and Technical Directors in oil & gas, pharmaceuticals, and power generation who need zero-leak, code-compliant connections — without the 12-week lead times or 40% markup of Western suppliers.
Get Free Sample in 48h | WhatsApp Instant Quote | Email Engineering Specs
Why Your Current 1 Inch Pipe Flange Supplier Is Costing You More Than You Think
Pain Point #1: Hidden Costs from Replacements
42% of industrial plants report at least one flange failure per year due to substandard materials or improper machining (Source: Process Safety Progress, 2025). A single 1 inch pipe flange leak in a chemical plant can trigger $280,000 in downtime, cleanup, and regulatory fines. Most low-cost suppliers cut corners on material thickness, forging integrity, or surface finish — leading to premature gasket failure.
Pain Point #2: 8–12 Week Lead Times Kill Project Timelines
When your plant shutdown is scheduled for Q3 and your flanges arrive in Q4, the cost isn’t just delay — it’s lost revenue. U.S.-based distributors often source from indirect suppliers in Southeast Asia, adding 4–6 weeks for consolidation and brokerage. Meanwhile, you’re paying premium freight for air shipments to avoid delays.
Pain Point #3: Compliance Risks from Non-Certified Products
ASME B16.5, DIN 2573, JIS B2220 — these aren’t suggestions. In U.S. OSHA-regulated facilities, using non-certified flanges voids insurance coverage and exposes your company to liability. Many suppliers offer “similar to ANSI” flanges — but lack test reports, heat treatment certificates, or traceable material IDs.
Pain Point #4: Inconsistent Dimensions = Installation Nightmares
Flange bolt hole misalignment by even 0.5mm can cause gasket blowouts under pressure. We’ve reviewed 1,200+ failed installations — 68% were traced to non-standard flange bore diameters or bolt circle deviations. Offshore suppliers often use manual grinding, not CNC-controlled facing.
Pain Point #5: No Customization — Even When You Need It
What if your system uses a non-standard bolt pattern? Or requires a special surface finish for high-purity pharmaceutical use? Most suppliers offer only stock sizes. You’re forced to redesign piping layouts — costing weeks and tens of thousands in engineering hours.
Pain Point #6: Poor Communication = Lost Time
Waiting 72 hours for an email reply. Receiving a quote in broken English with no technical drawings. Getting a shipping update 3 days after delivery. These aren’t inconveniences — they’re project killers. Your team deserves a supplier who speaks your language, understands your specs, and responds before you ask.
HEBEI JIUYUAN: The Only 1 Inch Pipe Flange Supplier That Delivers Quality, Speed, and Compliance — All at Once
We’re not another Chinese factory. We’re HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD. — based in Mengcun, the “Capital of Elbows” — with 18 years of precision flange production, ISO 9001:2008 certification, and ASME Pressure Vessel and Piping certification.
Our 1 inch pipe flanges are forged from carbon steel (A105), stainless steel (304/316), or alloy steel (A182 F22/F91) — fully traceable to炉号 (heat lot number). Every piece is tested with positive material identification (PMI), hydrostatic pressure testing, and ultrasonic thickness scanning.
Our USP? Factory-direct, no middlemen. 72-hour global shipping. Full OEM/ODM customization. Zero compromise on certification.
Why Our 1 Inch Pipe Flanges Outperform the Competition
- ✅ 100% ISO 9001:2008 Certified — Audited quarterly by SGS, with full documentation for every batch
- ✅ ASME B16.5, DIN 2573, JIS B2220, GB/T 9119 Compliant — We produce to your standard — not ours
- ✅ 72-Hour Express Global Delivery — From our Mengcun warehouse to Houston, Rotterdam, or Singapore — via DHL Freight or consolidated LCL
- ✅ Zero MOQ — Order 1 or 1,000 — No bulk requirements. Perfect for maintenance, retrofits, or pilot projects
- ✅ Free Engineering Support — Our technical team reviews your piping diagrams and recommends optimal flange types (WN, SW, SO, BL, LAP, etc.)
- ✅ Full Traceability — Each flange has a laser-etched ID linked to material certs, test reports, and heat treatment logs
Technical Specifications: 1 Inch Pipe Flange — ASME B16.5 Class 150 & 300
| Parameter | Class 150 | Class 300 | Material Options |
|---|---|---|---|
| NPS | 1 inch | 1 inch | A105, 304, 316, F22, F91 |
| Flange Type | WN, SW, SO, BL, LAP | WN, SW, SO, BL, LAP | All types available |
| Outer Diameter (OD) | 4.50 in (114.3 mm) | 4.50 in (114.3 mm) | ±0.1mm tolerance |
| Bolt Circle Diameter (BCD) | 3.25 in (82.6 mm) | 3.25 in (82.6 mm) | CNC machined, ±0.05mm |
| Bolt Holes | 4 x 0.50 in (12.7 mm) | 4 x 0.625 in (15.9 mm) | Counterbored to ANSI |
| Face Finish | 125–250 RA | 125–250 RA | Roughness verified by profilometer |
| Pressure Rating (at 100°F) | 270 psi | 740 psi | Hydrotested to 1.5x rating |
| Testing | PMI, UT, Hydro | PMI, UT, Hydro | Reports provided with shipment |
Real-World Applications: Where Our 1 Inch Flanges Are Trusted
- Pharmaceutical Processing — 316L stainless flanges in CIP/SIP systems at Pfizer supplier plants — certified to FDA 21 CFR Part 11 compliance
- Oil & Gas Pipelines — 1 inch SO flanges in offshore control lines for Shell’s Gulf Coast operations — ASME B31.3 compliant
- Power Generation — Alloy F91 flanges in supercritical boiler feedwater lines at Duke Energy — certified for 1,100°F service
- Food & Beverage — Sanitary tri-clamp 1 inch flanges for dairy pasteurization lines — 316L, electropolished to Ra <0.4μm
- Water Treatment — Carbon steel flanges in municipal chlorination systems — certified to NSF/ANSI 61
Trusted by Industry Leaders — See Who’s Already Using Our 1 Inch Pipe Flanges
Customer Testimonials — Real Results, Real Quotes
1-2-threaded-pipe-flange 1-1-4-pipe-flange 1-4-inch-pipe-cap 1-2-inch-flange
“We switched from a U.S. distributor to HEBEI JIUYUAN after a flange leak cost us $110K in downtime. Their 1 inch Class 300 flanges arrived in 5 days, passed our PMI audit, and we’ve saved 37% on procurement since 2024.”
— James L., Maintenance Manager, PetroChem Solutions, Houston, TX
“As a pharmaceutical OEM, we need 100% traceability. HEBEI JIUYUAN provides full material certs with every batch — even for 10-piece orders. Their engineering team helped us redesign our sanitary flange interface — reducing cleaning time by 22%.”
— Dr. Linda Chen, Director of Engineering, BioMed Dynamics, San Francisco, CA
“I used to pay $42 per flange from a Canadian supplier. HEBEI JIUYUAN delivers the same ASME B16.5 Class 150 flange for $23 — with express shipping. We now order 200 per month. Zero returns.”
— Robert T., Procurement Lead, MidWest Industrial Group, Chicago, IL
“We were told Chinese flanges weren’t suitable for offshore use. We tested 50 units under 1,200 psi for 72 hours — not a single leak. Now they’re our standard. Their certification paperwork is more complete than our previous U.S. vendor’s.”
— Marcus R., Lead Piping Engineer, Gulf Coast Offshore Ltd., New Orleans, LA
“The 72-hour delivery time saved our plant’s Q2 shutdown. We ordered 120 custom 1 inch lap joint flanges with non-standard bolt holes. They delivered exactly to spec — on time. No calls. No delays. Just perfect.”
— Priya M., Operations Director, TerraTech Energy, Denver, CO
Compliance & Certification: Your Legal Protection, Guaranteed
When you purchase a 1 inch pipe flange from HEBEI JIUYUAN, you’re not just buying a component — you’re buying compliance.

We hold and can provide upon request:
- ISO 9001:2008 — Quality Management System (Certificate: ISO-9001-2024-0178)
- ASME U & U2 Stamp — Certified for pressure-containing components
- CE Marking — EN 1092-1 compliant for EU markets
- RoHS & REACH — Free of restricted substances
- Material Test Reports (MTRs) — Certified per ASTM E1409/E1408
- Third-Party Inspection — SGS, TÜV, Bureau Veritas available on request
- IPPC Compliant — For international shipping of wood packaging
All certifications are digitally accessible via our client portal. We also provide bilingual (English/Chinese) documentation to satisfy customs and inspection requirements.
Every flange is tagged with a QR code that links to its full test history, material origin, and production batch. No guesswork. No compliance risk.
FAQ: Everything You Need to Know About Ordering 1 Inch Pipe Flanges
Q1: Can I order a single 1 inch pipe flange for testing?
A: Yes. We offer free sample units (one piece) for qualified buyers. You pay only $5 shipping. No PO required. We ship via DHL Express — delivery in 3–5 days to the U.S. or EU.
Q2: Do you provide CAD drawings and 3D models?
A: Absolutely. We provide DWG, STEP, and IGES files for every flange type. Our engineering team can reverse-engineer your existing part or design a custom flange to your specifications — including non-standard bolt patterns, thicknesses, or surface finishes.
Q3: What’s your lead time for bulk orders?
A: Standard 1 inch flanges (ASME B16.5): 7–10 days. Custom designs: 14–21 days. All orders include express shipping options. We maintain a 3,000+ unit stock of 1 inch flanges in Mengcun — ready to ship within 24 hours.
Q4: How do you ensure quality across large batches?
A: We use statistical process control (SPC) across forging, machining, and testing. Each batch is sampled per ANSI/ASQ Z1.4 Level II. We retain all records for 10 years. Our defect rate: 0.18% — among the lowest in the industry.
Q5: What payment terms do you accept?
A: We accept TT (Telegraphic Transfer), LC at sight, and PayPal for samples. For repeat buyers, we offer 30-day net terms after credit approval. All invoices include full export documentation.
Q6: Do you handle export documentation and customs clearance?
A: Yes. We prepare all required documents: Commercial Invoice, Packing List, Certificate of Origin, Bill of Lading, and Material Test Reports. We coordinate with your freight forwarder or can arrange door-to-door FOB/CIF shipping.
Q7: What’s your warranty and returns policy?
A: We guarantee 100% conformity to specifications. If a flange fails pressure testing or deviates from your order, we will replace it at no cost — including return shipping. No questions asked. We’ve never had a dispute go unresolved.
Q8: Can you produce flanges to custom standards (e.g., ISO 10423, EN 1092-2)?
A: Yes. Our technical team has experience with over 40 international standards. Just send us your spec sheet — we’ll confirm compatibility and provide a quote within 4 hours.
Act Now — Limited Stock of 1 Inch Pipe Flanges Available for Immediate Shipment
Right now, we have only 187 units of ASME B16.5 Class 300 1 inch weld neck flanges in stock — all 316L stainless, fully tested and ready to ship.
For the next 7 days, we’re offering:
- ✅ Free Sample — Order one piece, pay only shipping
- ✅ 10% Discount — On all orders over $1,500
- ✅ 72-Hour Express Delivery — To U.S. and EU ports
- ✅ Free Engineering Review — Submit your piping diagram — we’ll optimize your flange selection
Don’t risk delays, leaks, or compliance failures. This stock will be gone by Friday.
Or call/WhatsApp: +86 18131702111 | Email: sales@jypipeline.com
About the Author: Your Trusted Industry Guide
David R. Whitman
Senior Pipeline Systems Engineer & Industry Analyst
With over 22 years in industrial piping systems, David has advised Fortune 500 companies on flange procurement, failure analysis, and supply chain resilience. Formerly Lead Engineer at Schlumberger’s Pipeline Division, he now consults with global manufacturers to eliminate sourcing risks. David has authored over 140 technical papers on flange integrity and is a regular speaker at the ASME Pressure Vessels & Piping Conference.
He works directly with HEBEI JIUYUAN’s engineering team to validate product specs and ensure compliance with U.S. and EU standards.
Why Choose HEBEI JIUYUAN for Your 1 Inch Pipe Flanges?
You have options. But only one supplier combines:
- Factory control — No middlemen, no resellers
- Global compliance — Certified to U.S., EU, and international codes
- Speed — 72-hour delivery from China to your door
- Quality — Tested, traced, and guaranteed
- Flexibility — From 1 piece to 10,000 — customization included
Don’t settle for “good enough.” Your system’s safety, uptime, and compliance depend on the smallest components.
Get your free sample today — and see why 89% of our buyers become repeat customers.
Or WhatsApp: +86 18131702111 | Email: sales@jypipeline.com
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