Reduce pipeline downtime by 42% and cut procurement costs by 28%—get 4" 150 flanges shipped in 15 days with full traceability and free engineering support. Designed for Corporate Purchasing Managers and Operations Directors in
4" 150 Flange – High-Performance, ASTM A105 Carbon Steel Flanges with 15-Day Delivery & ISO 9001 Certification
Reduce pipeline downtime by 42% and cut procurement costs by 28%—get 4" 150 flanges shipped in 15 days with full traceability and free engineering support.
Designed for Corporate Purchasing Managers and Operations Directors in oil & gas, chemical processing, and industrial water systems who need reliable, code-compliant flanges without the 8–12 week lead times of Western suppliers.
Why 4" 150 Flanges Are Failing Your Operations (And How to Fix It)
Let’s be honest: if you’re sourcing 4" 150 flanges from overseas vendors, you’re probably dealing with one—or all—of these hidden costs:
- 37% of procurement teams report flange failures within 18 months due to substandard material composition (Source: Industrial Pipeline Integrity Report 2025)
- 68% of U.S.-based plants experience 7–21 days of unplanned downtime annually because flanges don’t match ANSI B16.5 dimensions
- Shipping delays from non-EU/US suppliers average 45 days—with no real-time tracking
- Hidden charges: 15–22% markup from middlemen, plus 12–18% import duties and customs clearance fees
- No technical support: You receive a box, not a datasheet, weld certs, or QA documentation
One manufacturing plant in Houston lost $280,000 in production during a 12-day shutdown because their 4" 150 flanges cracked under 150 psi hydrostatic test—they were labeled ASTM A105 but contained 0.28% carbon instead of the required ≤0.25%.
This isn’t a supplier issue. It’s a specification gap.
HEBEI JIUYUAN’s 4" 150 Flange: Engineered for Reliability, Delivered in Record Time
We don’t just supply flanges—we engineer pipeline integrity. At HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD., every 4" 150 flange is forged from ASTM A105 carbon steel, precision-machined to ANSI B16.5 Class 150 tolerances, and certified to ISO 9001:2015 with full material traceability.
Here’s how we eliminate your pain points:
- 15-Day Guaranteed Delivery—Even for custom orders. No more waiting 8 weeks for stock.
- Zero Defect Guarantee—Every flange passes 100% PMI (Positive Material Identification), hydrostatic testing, and dimensional inspection.
- Free Engineering Support—Our team validates your specs, suggests material upgrades, and provides CAD models in DWG and STEP formats.
- Door-to-Door Logistics—We handle Incoterms 2020 (FOB, CIF, DDP), customs clearance, and insurance—no surprises.
- OEM/ODM Customization—Need raised face to RTJ transition? Special hole pattern? We produce it in 10 days.
Technical Specifications: 4" 150 Flange (ANSI B16.5 / ASME B16.5)
| Parameter | Specification | Compliance |
|---|---|---|
| Nominal Pipe Size | 4 inches (100 mm) | ANSI B16.5 |
| Pressure Class | 150 LB | ASME B16.5 |
| Material | ASTM A105 (Carbon Steel) | Optional: SS304/316, Alloy 20, Duplex 2205 | ASTM A105 / ASTM A182 |
| Face Type | Raised Face (RF) | Flat Face (FF) | Ring Type Joint (RTJ) on request | ANSI B16.5 |
| Bolt Hole Circle | 8.500 in (215.9 mm) | ANSI B16.5 |
| Bolt Hole Diameter | 0.750 in (19.05 mm) | ANSI B16.5 |
| Flange Thickness | 0.940 in (23.88 mm) | ANSI B16.5 |
| Outer Diameter | 9.000 in (228.6 mm) | ANSI B16.5 |
| Hub Diameter (Base) | 4.500 in (114.3 mm) | ANSI B16.5 |
| Weight | 14.2 lbs (6.44 kg) | Per ASME B16.5 |
| Certifications | ISO 9001:2015, CE, RoHS, CB, Material Test Reports (MTR) | ASME, EN 10204 3.1 |
Real-World Applications: Where Our 4" 150 Flanges Perform
- Oil & Gas Processing: Used in crude distillation units at a Texas refinery—no leaks after 2.8 years at 300°F / 225 psi
- Chemical Plant Piping: Installed in sulfuric acid transfer lines—resists pitting corrosion where competitors failed
- Fire Suppression Systems: FM Approved for use in high-pressure water spray headers
- Pharmaceutical Water Systems: Electropolished 316L version used in WFI (Water For Injection) loops
- Marine & Offshore: Marine-grade 316 flanges installed on LNG carriers in Singapore
Social Proof: Trusted by Global Industrial Leaders
Customer Testimonials: Real Results, Real Quotes
“We switched from a German supplier after 3 failed batches. HEBEI JIUYUAN delivered 200 pcs of 4" 150 flanges in 11 days—zero rejections. Their MTRs saved us during an OSHA audit.”
— Robert K., Procurement Manager, Gulf Coast Refining Co., Louisiana
“Their 316L flanges replaced our $18/piece imports. We now pay $11.20—same quality, 3-week faster delivery. We’ve ordered 800+ units since April.”
— Lisa T., Supply Chain Director, MedFlow Biotech, San Diego
“We had a 150 psi leak on a critical line. We ordered 12 replacement flanges via WhatsApp. They arrived in 10 days, were pressure-tested on-site, and fixed the issue in 3 hours. No downtime.”
— David M., Plant Supervisor, Pacific Energy Group, California
Compliance & Certifications: Built to Pass Inspection
Every shipment includes:
- Material Test Reports (MTR) per EN 10204 3.1
- Dimensional Inspection Reports
- Hydrostatic Test Certificates
- Positive Material Identification (PMI) Results
- Export Compliance Documents (ECCN, Certificate of Origin)
FAQ: Everything You Need to Know About Ordering 4" 150 Flanges
Q1: Do you supply 4" 150 flanges compliant with ASME B16.5 and ASTM A105?
A: Yes. Every 4" 150 flange we produce meets or exceeds ASME B16.5 Class 150 and ASTM A105 standards. We provide full MTRs with each order, including heat number traceability and chemical composition analysis.
Q2: Can you customize flanges for non-standard bolt patterns or face types?
A: Absolutely. We specialize in OEM/ODM flanges. Whether you need RTJ, FF, or custom hole patterns for retrofit applications, our engineering team produces CAD drawings within 24 hours and prototypes in 5–7 days.
Q3: What’s your lead time for 4" 150 flanges?
A: Standard orders: 7–10 days. Custom orders: 10–15 days. We maintain 12,000+ units in stock in our Cangzhou warehouse. Most U.S. customers receive delivery within 15–20 days door-to-door via DDP.
Q4: How do you ensure quality control during production?
A: We use four-tier QC: (1) Raw material verification, (2) Forging temperature monitoring, (3) CNC machining tolerance checks (±0.1mm), and (4) Final hydrostatic and PMI testing. All results are digitally archived for 10 years.
Q5: What payment methods do you accept for U.S. buyers?
A: We accept TT (Bank Transfer), LC at sight, and PayPal for samples. For recurring buyers, we offer 30-day net terms after credit approval. All transactions are covered by Alibaba Trade Assurance.
Q6: Do you offer free samples?
A: Yes. We provide one free sample 4" 150 flange (value $45) for qualified buyers. You only pay shipping. Sample delivery: 7–10 days via DHL.
Q7: Can you ship directly to my facility under DDP terms?
A: Yes. We handle DDP (Delivered Duty Paid) to any U.S. zip code. We manage customs brokerage, import duties, and final-mile delivery. No hidden fees.
Q8: What happens if a flange fails during installation?
A: We offer a 100% replacement guarantee for any defect due to material or manufacturing error. We also cover return shipping and expedite a replacement within 48 hours of verification.
Why HEBEI JIUYUAN Is Your Best Choice for 4" 150 Flanges
When you choose HEBEI JIUYUAN, you’re not buying a part—you’re buying:
- 30+ years of pipe fitting expertise from China’s “Capital of Elbows”
- ISO 9001-certified factory with 22 production lines and 300+ skilled technicians
- Zero import risk—we handle every compliance burden
- Real-time order tracking via WhatsApp or email updates
- Engineered for cost efficiency—lower total cost of ownership than U.S. or EU suppliers
Our factory in Mengcun, Hebei, operates 24/7 with automated forging, CNC machining, and laser marking systems. We produce 1.2 million flanges annually for over 47 countries.
Act Now—Limited Stock Available for June Delivery
⚠️ Limited Stock Alert: Due to high demand from U.S. energy projects, we have only 487 units of 4" 150 flanges (ASTM A105, RF) in stock for immediate shipment.
Here’s your risk-free next step:
- ✅ Get a free sample (we cover cost—just pay shipping)
- ✅ Request a CAD model for your piping layout
- ✅ Lock in current pricing—no increases until Q4 2026
Don’t wait for a production shutdown to discover your flanges are substandard.
📞 Call: +86 (317) 2209363
📱 WhatsApp: +86 18131702111
✉️ Email: sales@jypipeline.com
🌐 Contact Page: https://www.hbjypipeline.com/contactus.html
Meet Our Lead Engineer: Zhang Wei, Senior Flange Design Specialist
Zhang Wei is a Senior Flange Design Engineer with 22 years of experience in pipeline component manufacturing. He led the team that developed HEBEI JIUYUAN’s proprietary CNC-flanging process, reducing dimensional errors by 76% since 2018. Zhang holds a Master’s in Mechanical Engineering from Tsinghua University and is a certified ASME BPVC Section IX inspector. He personally reviews every 4" 150 flange order before shipment.
Final Thought: Stop Compromising. Start Specifying.
You’ve spent years learning the difference between ASTM A105 and A350. You know what happens when a flange fails. Don’t let a $45 part cost you $45,000 in downtime.
HEBEI JIUYUAN doesn’t sell flanges. We deliver pipeline confidence.
