Four Bolt Flange & Jack Bolt Flange Jack Bolts For Flanges | Factory
Four Bolt Flange & Jack Bolt Flange Jack Bolts For Flanges | Factory
High-Strength Four Bolt Flange & Jack Bolt Flange | Factory Direct
🛠️ Stop alignment issues & budget overruns. As a leading Chinese manufacturer, we supply precision jack bolts for flanges that meet ASTM/ASME standards, cutting your total cost by up to 40%.
📞 Get Free Quote in 24 Hours⚡ ISO 9001 Certified | 10+ Years Export | 30+ Countries Served
⚠️ The Hidden Cost of Substandard Flanges
💰 Budget Overruns
Legacy brands charge 2x to 3x the market price. Every dollar saved on procurement goes straight to your bottom line.
⏳ Downtime & Delays
A single four bolt flange failure can cost $50,000+ in unplanned downtime. Are your suppliers shipping inconsistent thread depths?
🚚 Supply Chain Headaches
Tired of 12-week lead times and expensive freight? Our factory-direct model delivers jack bolt flanges in 4-6 weeks, CIF to your port.
🔧 Quality Inconsistency
Porosity, inaccurate drilling, off-spec materials. Don't risk your pipeline integrity with sub-par jack bolts for flanges.
✅ You need a partner who delivers precision, not problems.
⚙️ Precision Engineering: Our Four Bolt Flange & Jack Bolt Flange Range
At Handan Boen Fastener Manufacturing Co., Ltd. (Est. 2010), we combine German engineering discipline with Chinese manufacturing efficiency. Our four bolt flanges and jack bolt flanges are forged from high-grade materials, ensuring durability under extreme pressure.
| Specification | Available Options |
|---|---|
| Material Grade | ASTM A105, A350 LF2, F304, F316, Duplex SS |
| Size Range | 1/2" to 24" (DN15 to DN600) |
| Pressure Rating | Class 150 to 2500 (PN16 to PN420) |
| Standards | ASME B16.5, DIN 2633, EN 1092-1, JIS B2220 |
| Jack Bolt Threads | UNC, UNF, Metric Coarse/Fine, BSP |
| Surface Treatment | Galvanized, HDG, Zinc Plated, PTFE Coated, Dacroment |
| Customization | OEM/ODM, Custom PCD, Marking, Packaging |
🔑 Why Industry Leaders Choose Boen Fasteners
Powerful Factory Direct
Eliminate middlemen. Get factory direct pricing on every four bolt flange. 30-50% cost savings guaranteed.
Quality Assurance
100% dimensional inspection, hardness test, and NPT thread gauge check. ISO 9001 & CE certified.
OEM/ODM Customization
Need specific jack bolts for flanges? Our engineering team can deliver custom designs in 15 days.
High-Speed Delivery
Stock program for standard sizes. 4-6 weeks lead time for bulk orders. Express shipping available.
🌍 Real-World Applications
Oil & Gas
High-pressure pipeline flanges
Water Treatment
Corrosion-resistant SS flanges
Power Generation
Jack bolt flanges for turbine bases
Shipbuilding
DNV-approved flanges
🏆 Trusted by Global Industry Leaders
Our components are used by:
⭐ What Our Customers Say
"We switched to Boen for our jack bolt flanges. Reduced procurement costs by 35% and lead times went from 12 weeks to 4 weeks. Highly reliable."
— Marc Dubois, Procurement Manager, France
"The quality of their four bolt flange is exceptional. We have shipped over 10,000 units to our Texas facility with zero defects. Highly recommended."
— John Smith, CEO, API Supply Co., USA
"Excellent OEM service. They customized jack bolts for flanges according to our exact drawings. The team is very responsive."
— Klaus Weber, Technical Director, Germany
❓ Frequently Asked Questions
Q1: What is the difference between a four bolt flange and a jack bolt flange?
A: A four bolt flange is a standard method for connecting pipes, valves, and equipment. A jack bolt flange incorporates threaded jacking bolts that allow for precise alignment, separation, and tensioning of the flange connection, making it ideal for high-pressure or critical service applications.
Q2: Can you provide custom jack bolts for flanges?
A: Absolutely. We specialize in OEM/ODM projects. Just send us your drawings or samples, and our engineering team can produce custom jack bolts for flanges in any material, thread size, or coating.
Q3: What is the MOQ for factory direct flanges?
A: For standard sizes, our MOQ is as low as 50 pieces. For custom sizes, the MOQ is typically 200 pieces. We are flexible and can accommodate trial orders.
Q4: How do you ensure the quality of your four bolt flanges?
A: We follow a strict ISO 9001:2015 quality management system. Every batch undergoes chemical analysis, mechanical testing, dimensional inspection, and NPT thread gauging. We provide a full Mill Test Certificate (MTC) with every shipment.
Q5: What are the shipping options to the USA/Europe?
A: We offer CIF, FOB, and DDP terms. Our logistics partners include Maersk, MSC, and COSCO. Standard sea freight takes 25-35 days to major ports like Houston, Rotterdam, and Hamburg. Air freight is also available for urgent orders.
Q6: Do you offer free samples for evaluation?
A: Yes, we provide free samples for standard sizes. The customer only needs to cover the shipping cost. Contact our sales team to request a sample of our jack bolt flange or four bolt flange.
Q7: What payment methods do you accept?
A: We accept T/T (30% deposit, 70% before shipment), L/C, and Western Union. For long-term contracts, we can negotiate flexible payment terms.
Ready to Cut Costs & Secure Your Supply Chain?
🚨 Limited Time Offer: Free sample + 5% discount on first order over $10,000. Don't let high prices and poor quality hold your project back.
✅ 100% Quality Guarantee | On-Time Delivery | Factory Direct Support
📧 Email: shuan@fastenboen.com | ☎️ Phone: +86 15630072814
📝 Hear From Our Partners
"We have been using Boen's four bolt flanges for our offshore projects. The corrosion resistance and thread accuracy are top-notch. They have become our go-to supplier."
— Lars J., Marine Engineer, Norway
"The jack bolts for flanges we ordered were perfect. The custom UNF threads matched our existing setup exactly. Fast shipping and great communication."
— David M., Maintenance Manager, Canada
"Finally, a Chinese supplier that delivers on time and meets specifications. Their jack bolt flange assembly saved us hours of installation time."
— Sarah K., Project Director, UK
✍️ About the Author
David Chen is a Senior Mechanical Engineer at Handan Boen Fastener Manufacturing Co., Ltd. With over 15 years of experience in the industrial fasteners and forging industry, he specializes in the design and application of four bolt flanges, jack bolt flanges, and high-strength bolting solutions for the global energy and infrastructure sectors.
