This article is written for Data Header used in oilfield high-pressure flowline and manifold connection service. The product should be confirmed by its real oilfield service position, not only by a short catalogue name. For API oilfield equipment, the useful specification combines pressure rating, nominal size, end connection, service condition, material or seal requirements, and inspection documents.
Data headers are available as union-end data headers and API flanged data headers. Pressure ratings range from 5,000 psi to 15,000 psi, depending on the selected API flanged or hammer-union end connection. Service conditions include standard and sour service; for sour service, wetted metallic materials are selected for the specified environment in accordance with NACE MR0175/ISO 15156.
The data header is used for pressure, temperature, and other data-acquisition interface connections in pup joints and manifold systems. Union-end and API flanged connection types are available.
In field layouts, the first question is where the component sits in the pressure path and what equipment it must connect to. The answer affects connection direction, pressure class, access for operation and future maintenance.
Key points to confirm
For Data Header, we normally recommend confirming the following items before quotation, production or replacement.
- Applicable manufacturer/project specification; API Spec 6A only for specified flanged interfaces and the approved specification for each Fig/union connection. API Spec 16C is not a blanket product standard for the data header.
- Working pressure, test pressure, nominal size and bore requirement.
- End connection type, mating equipment, flow direction and installation space.
- Service condition: standard, low-temperature or sour service; for sour service, provide the environmental limits needed for NACE MR0175/ISO 15156 material selection.
- Required documents such as MTC, pressure test report, NDT report and third-party inspection.
Field use and inspection
Data Header should be checked as part of the complete high-pressure system. Sealing surfaces must be protected, connections should be clean before make-up, and the product should not be forced into alignment by side load, hammering or pulling. If leakage, abnormal operation or pressure-test instability occurs, the model, pressure, medium, photos and test conditions should be recorded for technical review.
Information for quotation
For new projects, please provide the line layout, operating pressure, medium, temperature, connection standard and document requirements. For replacement work, old-part photos, nameplate or body markings, end-connection close-ups and installation position help us confirm the correct Data Header quickly.