When engineered for high-pressure oilfields and heavy-duty gas pipelines, standard piping components simply won't suffice. That is precisely where API forged flanges become indispensable. As a leading China flange manufacturer with 16 years of rigorous industry experience, Hebei Yu Jinduo specializes in delivering high-integrity API standard flanges that withstand the world's most volatile industrial environments.
Operating 5 advanced in-house production lines, our factory excels in manufacturing top-tier china flange solutions. API flanges—specifically under API 6A specifications—are engineered to handle extreme pressure ratings ranging from 2,000 to 15,000 psi. Whether your project demands standard carbon steel, low-temperature alloys, or premium stainless steel, we ensure 100% material traceability with official EN 10204 3.1 Mill Test Certificates.
To streamline your procurement workflow, here is a quick overview of common API flange specifications we manufacture daily:
| Nominal Size | Pressure Rating (PSI) | Material Grades (Common) | Facing Type |
| 2-1/16" | 2,000 / 3,000 / 5,000 | ASTM A105 / F316L / 4130 | Ring Joint (RTJ) |
| 3-1/8" | 3,000 / 5,000 / 10,000 | ASTM A105 / Duplex SS | Ring Joint (RTJ) |
| 4-1/16" | 2,000 / 5,000 / 15,000 | AISI 4130 / A350 LF2 | Ring Joint (RTJ) |
| 7-1/16" | 3,000 / 5,000 / 10,000 | ASTM A105N / AISI 4140 | Ring Joint (RTJ) |
Beyond rigid technical compliance, we solve the global supply chain’s biggest headache: lead time. Thanks to our massive manufacturing capacity, we guarantee an expedited delivery of up to 2 containers within 30 days directly to your destination port.
Stop overpaying middlemen for pipeline materials. Choose a time-tested china flange manufacturer dedicated to heavy-duty engineering and zero-leakage safety.
Hebei YuanJida Group is China flange manufacturer. We mainly produce blind/blank flange, palte flange,puddle flange,slip on flange,pipe flange,steel flange,weld neck flange,thread flange,loose flange and any flange types we could supply it.[ Read More >>]
