- 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
Eliminate leaks and reduce installation downtime. We provide high-precision 1.5-inch flanges for Corporate Purchasing Managers and Technical Directors who cannot afford a single point of failure in their fluid transport systems. In the world
Contents
- 1. High-Performance 1 1/2 Flange Solutions
- 2. The Hidden Costs of Substandard Pipe Fittings
- 3. Why Hebei Jiuyuan is Your Strategic Partner
- 4. Deep Dive: 1 1/2 Flange Technical Specifications & Standards
- 5. Industrial Application Scenarios
- 6. Global Trust & Certifications
- 7. Procurement FAQ
- 8. Client Success Stories
- 9. Get Your Custom Quote
Secure Your Pipeline Integrity with Precision-Engineered 1 1/2 Flanges — Industrial Grade, Rapid Delivery
Eliminate leaks and reduce installation downtime. We provide high-precision 1.5-inch flanges for Corporate Purchasing Managers and Technical Directors who cannot afford a single point of failure in their fluid transport systems.
Get Free Quote in 24h →The High Price of "Cheap" Flanges: Are Your Operations at Risk?
In the world of industrial piping, a 1 1/2 flange might seem like a commodity. But for a Technical Director, a single faulty seal in a 1.5-inch line can lead to catastrophic system failure. We've seen too many procurement managers struggle with the following:
- ❌ Chronic Leaks & Poor Tolerances: Using flanges that deviate by even 0.5mm from ANSI or DIN standards leads to uneven gasket compression, resulting in costly emergency shutdowns.
- ❌ The "Shipping Nightmare": Ordering from fragmented suppliers leads to inconsistent lead times. When your project is stalled because a shipment of 1.5" flanges is stuck in customs or delayed at the factory, ROI plummets.
- ❌ Material Degradation: "Stainless steel" that isn't truly 316L begins to pit and corrode in chemical environments, forcing replacements every 12 months instead of every 10 years.
- ❌ Overpaying for Middlemen: Buying through local distributors often adds a 30-50% markup without adding any actual value to the product quality.
Stop compromising your infrastructure. You need a direct-from-factory solution that balances cost-efficiency with uncompromising technical precision.
HEBEI JIUYUAN: The Gold Standard in 1 1/2 Flange Manufacturing
Located in the "Capital of Elbows," HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD. isn't just a supplier; we are a technical powerhouse. We leverage a registered capital of 10.09 million yuan and advanced forging facilities to deliver flanges that exceed international expectations.
Technical Analysis: Engineering the Perfect 1 1/2 Flange
For the Technical Director, the "1 1/2" designation is only the beginning. The actual performance of the flange depends on the interplay between material grade, pressure class, and facing type. Below is the comprehensive technical breakdown of our 1.5-inch product line.
1. Dimensional Standards & Compatibility
Our 1 1/2 flanges are manufactured to strict adherence to global standards. A mismatch in bolt circle diameter or thickness can lead to catastrophic failure during commissioning.
| Standard | Nominal Size | Outer Diameter (OD) | Bolt Circle | No. of Holes | Pressure Rating |
|---|---|---|---|---|---|
| ASME B16.5 | 1 1/2" | 5.00" (127mm) | 3.88" (98.4mm) | 4 | 150# / 300# / 600# |
| DIN / EN 1092-1 | DN 40 | 150mm | 125mm | 4 | PN 10 / 16 / 40 |
| JIS B2220 | 40A | 140mm | 110mm | 4 | 5K / 10K / 20K |
2. Material Selection Guide for 1.5" Flanges
Selecting the wrong material for a 1 1/2 flange is the fastest way to incur unplanned maintenance costs. Depending on the medium being transported, we offer:
- Carbon Steel (ASTM A105): The industry workhorse. Ideal for non-corrosive fluids, oil, and gas. High strength and excellent weldability.
- Stainless Steel 304/304L: Superior corrosion resistance. Standard for food processing, pharmaceuticals, and water treatment.
- Stainless Steel 316/316L: The "Marine Grade." Essential for high-chloride environments and aggressive chemical processing. Molybdenum addition prevents pitting.
- Alloy Steel / Low Temp Steel: Specifically engineered for cryogenic applications or extreme heat in power plants, preventing brittle fracture at -46°C and below.
- Duplex & Nickel-Based Alloys: For the most extreme conditions (e.g., saltwater injection in oil rigs), combining the strength of ferritic steel with the corrosion resistance of austenitic steel.
3. Comparing Flange Types for 1 1/2" Applications
Not all 1 1/2 flanges are created equal. The geometry you choose dictates the stress distribution of your entire piping system.
4. Manufacturing Process & Quality Control
1-1-2-galvanized-pipe-cap 20mm-tee-connector 2-inch-to-1-inch-threaded-reducer 1-2-inch-floor-flange
At HEBEI JIUYUAN, the journey of a 1 1/2 flange from raw billet to finished product is a disciplined process:
- Forging: We use high-pressure forging to ensure a dense, uniform grain structure, which is far superior to casting in terms of tensile strength.
- Precision Machining: CNC lathes ensure that the flange face (RF - Raised Face, FF - Flat Face, or RTJ - Ring Type Joint) is perfectly flat to within ±0.05mm.
- Heat Treatment: Normalizing and tempering are applied to relieve internal stresses and optimize mechanical properties.
- Testing:
- PMI (Positive Material Identification): Ensuring the alloy is exactly what the certificate says.
- Ultrasonic Testing (UT): Checking for internal voids or cracks.
- Hydrostatic Testing: Validating pressure ratings under real-world loads.
Where Our 1 1/2 Flanges Perform Best
The versatility of the 1.5-inch size makes it a staple across multiple critical industries. Here is how our clients utilize our products:
🛢️ Petroleum & Chemical
Used in secondary feed lines and instrumentation manifolds. Our A105 carbon steel flanges withstand high-pressure hydrocarbon transport without deformation.
💊 Pharmaceutical & Biotech
Our SS316L flanges provide the ultra-smooth surface finish (Ra < 0.4μm) required to prevent bacterial growth and ensure sterile fluid transfer.
⚡ Power Generation
Critical for steam lines and cooling systems. Our alloy steel flanges handle the extreme thermal cycling found in boiler house environments.
🚢 Shipbuilding & Marine
Resisting the salt-spray environment with high-grade duplex steel flanges that eliminate the need for frequent painting and maintenance.
Procurement FAQ: Everything You Need to Know
Q1: What is the typical lead time for a bulk order of 1 1/2 stainless steel flanges?
A: For standard sizes (ASME/DIN), we usually ship within 7-14 business days. For custom OEM designs, lead times vary from 21-30 days depending on the material availability.
Q2: Can you provide Mill Test Reports (MTR) for each batch?

A: Yes. Every shipment of 1.5" flanges is accompanied by a full MTR, including chemical composition and mechanical properties, ensuring 100% traceability.
Q3: How do you handle shipping to the USA and Europe to keep costs low?
A: We partner with leading freight forwarders to offer consolidated shipping and DDP (Delivered Duty Paid) options, reducing your customs headache and overall logistics spend.
Q4: Do you offer customization for non-standard 1 1/2 flange thicknesses?
A: Absolutely. Our factory is equipped for custom forging. Just provide your technical drawing or specifications, and we will provide a feasibility analysis and quote.
Q5: What is your Minimum Order Quantity (MOQ)?
A: While we specialize in bulk industrial supply, we support project-based orders. Contact our sales team for flexible MOQ options based on the material grade.
Real Feedback from the Field
"We switched to Hebei Jiuyuan for our 1.5-inch weld neck flanges after a bad experience with a local vendor. The tolerances are spot on, and we've seen a 15% reduction in installation time."
— Mark S., Procurement Manager (Texas, USA)
"The quality of the SS316L 1 1/2 flanges is exceptional. We are operating in a high-salinity environment, and after 2 years, there is zero sign of pitting. Highly professional communication."
— Elena R., Technical Director (Hamburg, Germany)
"Fast delivery is an understatement. We needed a batch of 1.5" blind flanges for an emergency shutdown, and they arrived in the US faster than our domestic supplier could quote us."
— James L., Operations Lead (Ontario, Canada)
Written by: Robert Chen, Senior Piping Systems Consultant
With over 22 years of experience in metallurgical engineering and international trade, Robert has helped 500+ industrial plants optimize their piping infrastructure. He specializes in ASME and DIN standard compliance for high-pressure environments.
Stop Overpaying for Mid-Grade Fittings. Upgrade to Industrial Precision.
Whether you need a single prototype or 10,000 units of 1 1/2 flanges, we guarantee the highest strength-to-cost ratio in the market.
Company: HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD.
Address: INDUSTRIAL DISTRICT OF NORTH CIRCLE, MENGCUN, CANGZHOU CITY, HEBEI PRVINCE, CHINA
Phone: +86(317)2209363 | Email: sales@jypipeline.com
Privacy Policy: Your technical drawings and procurement data are encrypted and handled under strict NDA protocols.

Trusted by Global Industry Leaders
Our manufacturing processes are certified under ISO 9001:2008 and we hold special equipment certifications for pressure pipelines, ensuring every 1 1/2 flange is legally compliant for use in the USA, EU, and Asia.