Precision CNC Machined Industrial Flanges A105 A350LF2 S235JR S275JR ST37 Sch5S Sch10S Sch10 0.25-42.0 MPa
Our precision-engineered flanges are manufactured using advanced CNC machining technology, designed specifically for demanding applications in the petrochemical industry and other high-pressure environments.
Available in multiple material grades to suit various industrial requirements:
- Carbon Steel: A105, S235JR, S275JR, ST37
- Alloy Steel: A350LF2
- Schedule Ratings: Sch5S, Sch10S, Sch10
- Carbon Steel
- Cast Steel
- Alloy Steel
- Stainless Steel
- Copper
- Aluminum Alloy
- Forged Flanges
- Cast Flanges
- Welded Flanges
- Chinese National Standards (GB)
- American Standards (ASTM)
- German Standards (DIN)
- Japanese Standards (JB)
| Parameter | Specifications |
|---|---|
| Nominal Pressure Range | 0.25 MPa - 42.0 MPa |
| Pressure Series 1 | PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42 |
| Pressure Series 2 | PN0.25, PN0.6, PN2.5, PN4.0 |
Ideal for high-temperature and high-pressure applications with reliable sealing performance. Features concave and convex sealing surfaces for pressures from 0.25-2.5 MPa.
Suitable for carbon steel pipe connections up to 2.5 MPa. Available in smooth, concave-convex, and tongue-groove sealing surfaces.
Commonly used in pipelines with PN≤10.0 MPa and DN≤40.
Perfect for corrosive environments where the flange face uses corrosion-resistant materials while the backing ring utilizes cost-effective carbon steel.
Integrated with equipment, pipes, and valves for seamless connections in critical applications.
- Flat Face (FF)
- Raised Face (RF)
- Concave Face (FM)
- Convex Face (MF)
- Tongue and Groove (TG)
- Ring Joint (RJ)
Quality First: Strict production and inspection according to international standards
Competitive Pricing: Market-based pricing with volume discounts
Secure Transactions: Protected payment processing and financial security
Comprehensive After-sales: Complete customer support and problem resolution
Long-term Partnership: Consistent quality, competitive pricing, and reliable service
Shandong Zhengde Metal Manufacturing Co., Ltd. operates multiple production facilities with over 100 production lines and 4 nationally recognized laboratories. Our products are exported to more than 50 countries worldwide.
Yes, we offer free samples with express shipping worldwide.
We hold ISO 9001, MTC certifications, and third-party inspections including SGS and BV.
Standard delivery is 7-15 days, with extended timelines for large or specialized orders.
Yes, we provide custom production according to your specifications and technical drawings.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.