Tee & Flange – API 6A
DEENPU API 6A Tees and Flanges are forged high-pressure connectors used throughout wellhead, Christmas tree, choke-and-kill, and flow-line assemblies. Manufactured to API Spec 6A with full material traceability, our tees, crosses, and flanges are supplied in all standard sizes, pressure ratings, and ring-gasket groove profiles (R, RX, BX).
Every piece is machined from a single AISI 4130/4140 forging – no welds in the pressure boundary – and is available with standard alloy-steel construction or Inconel 625 weld overlay for sour and corrosive service.
Technical Specifications
| Parameter | Specification |
|---|---|
| Design Standard | API Spec 6A / ASME B16.5 / ASME B16.47 |
| Product Types | Tee, cross, blind flange, weld-neck flange, adapter flange, companion flange |
| Nominal Sizes | 1-13/16 inch to 21-1/4 inch (flanged); 2 inch to 6 inch (studded tees) |
| Working Pressure | 2,000 / 3,000 / 5,000 / 10,000 / 15,000 / 20,000 PSI |
| Ring Groove Types | R, RX, BX (per API 6A tables) |
| Material | AISI 4130 / 4140 forged alloy steel; 410 SS; Inconel 625 overlay optional |
| Material Class | AA, BB, CC, DD, EE, FF, HH |
| Temperature Class | K, L, P, R, S, T, U, V |
| PSL | PSL1, PSL2, PSL3, PSL3G |
| Heat Treatment | Quenched & tempered; hardness verified per heat lot |
| Testing | Hydrostatic body test; dimensional inspection per API 6A |
Available Configurations
- Studded tees & crosses – all four outlets studded for valve/spool mounting
- Flanged tees & crosses – combination of flanged and studded outlets
- Blind and test flanges – with or without NPT/test ports
- Weld-neck and slip-on flanges – for flow-line fabrication
- Adapter flanges – size-to-size and pressure-rating transitions
- Double-studded adapter (DSA) flanges – any API size combination
Key Features
- Single-piece forging – zero welds in pressure-containing body
- Precise CNC-machined ring grooves with surface finish 32–63 RMS
- Full traceability: heat number, MTR, dimensional report with each piece
- NACE MR0175 compliant materials for sour service on request
- Stock program for common sizes (2-1/16″ – 7-1/16″, 5K–10K) – fast delivery
- Third-party inspection (BV, DNV, SGS) available
Applications
- Wellhead and Christmas tree assemblies
- Choke & kill and standpipe manifolds
- Frac and flowback manifolds
- Drilling spools and adapter stacks
- Production flow lines and test separators
Ordering Information
Please specify: product type (tee/cross/flange), nominal sizes of each outlet, working pressure, ring groove type, material class, and quantity. Non-standard sizes, transition pieces, and special overlays are manufactured to order with short lead times.
Contact DEENPU for Orders & Technical Support
Email: SALES@DEENPU-MACHINERY.COM
WhatsApp: +86 158 0628 4962