C&N industrial Group, pipe, fitting and flanges manufacturers,fbe epoxy and pe coating for pipeline since 1991,with brand C&N huitong ,C&N hongcheng.
ASTM A860 WPHY 65 Barred Tee,MSS SP 75
C&N is a professional manufacturer of high-strength butt-welding fittings. We supply ASTM A860 WPHY 65 Barred Tees that meet MSS SP-75 specifications and offer NACE MR0175 compliance for sour service applications. These barred tees provide reliable performance in high-pressure pipelines requiring pigging operations.
A barred tee is a specialized pipe fitting with internal restriction bars welded across the branch outlet. It prevents the pig from entering or getting stuck in the branch line while allowing smooth passage through the main pipeline. This design is essential in piggable systems, particularly near pig launchers or receivers.
ASTM A860 WPHY 65 Chemical Composition (%)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | 1.00 – 1.45 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.010 |
| Silicon (Si) | 0.15 – 0.40 |
| Nickel (Ni) | ≤ 0.50 |
| Chromium (Cr) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.25 |
| Copper (Cu) | ≤ 0.35 |
| Vanadium (V) | ≤ 0.10 |
| Columbium (Cb) | ≤ 0.04 |
| Titanium (Ti) | ≤ 0.05 |
Note: Values are maximum unless a range is specified. For NACE MR0175 compliance, additional controls on hardness and microstructure apply.
ASTM A860 WPHY 65 Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (min) | 65 ksi (450 MPa) |
| Tensile Strength | 77 – 95 ksi (530 – 655 MPa) |
| Elongation (min) | 20% |
| Hardness (for NACE) | ≤ 22 HRC (typical) |
The Difference Between a Tee and a Barred Tee
| Parameter | Tee (Standard) | Barred Tee |
|---|---|---|
| Definition | Standard branch fitting | Tee with internal bars for pigging |
| Manufacturing | Forged or extruded | Typically fabricated with welded bars |
| Use | General piping and pipelines | Pigged pipelines, near launchers/receivers |
| Design Standard | ASME B16.9 / MSS SP-75 | MSS SP-75, often with client specs |
| Pigging Compatibility | Allows pig into branch | Prevents pig from entering branch |
| Cost | Lower | Higher due to fabrication |
Barred Tee Design Considerations
The internal bars are welded to ensure sufficient strength against pig impact while maintaining flow efficiency. Key factors include:
- Adequate bar quantity → thickness, and spacing to stop the pig without restricting fluid flow.
- Bars ground smooth → to match the pipe’s internal curve, preventing damage to pig discs or cups.
- Full penetration welds → for structural integrity.
- Material matching the tee body for compatibility.
These features make the barred tee suitable for demanding pipeline conditions.
Applications
- Oil and gas transmission pipelines
- Pig launcher and receiver stations
- High-pressure flowlines in sour service (NACE compliant)
- Subsea and onshore pipeline systems requiring regular pigging for cleaning or inspection
C&N supplies ASTM A860 WPHY 65 Barred Tees with full material traceability, third-party inspection options, and protective packaging for safe delivery. With years of experience in high-strength fittings, we ensure consistent quality and on-time supply for projects worldwide.
For custom sizes, NACE requirements, or quotations, contact our team. We are committed to delivering reliable fittings that meet your project specifications.
ASTM A860 WPHY 65 Barred Tee,MSS SP 75
