Standard
ASME B16.9, MSS SP-75
Size Range
½" – 24" seamless; 4" – 72" welded
Category
Fittings
Butt-weld equal and reducing tees in carbon, alloy, and stainless steel manufactured to ASME B16.9. Equal tees provide full-bore branch connections; reducing tees join a branch of smaller NPS. Available from ½" through 24" seamless and up to 72" in welded construction, with wall thickness from Sch 5S through XXS.
Applications
- → Process piping branch connections — equal tees for full-bore flow split or combination
- → Production manifolds — reducing tees connecting smaller branch headers to main trunk
- → Pump and compressor suction and discharge headers — flow distribution to multiple branches
- → Offshore platform piping — stainless steel tees for corrosive and cryogenic service
- → Power generation feedwater and steam distribution systems
- → Petrochemical plant process lines — alloy tees for elevated temperature service
- → Fire suppression and safety system piping — ASME B31.1 branch connections
- → Water treatment plants and desalination distribution mains
Standards & Certifications
- ASME B16.9 — Factory-made wrought buttwelding fittings — dimensional and tolerance standard
- MSS SP-75 — High-strength buttwelding fittings for WPHY pipeline grades
- ASTM A234 — Wrought carbon and alloy steel piping fittings — WPB, WP11, WP22, WP91 grades
- ASTM A403 — Wrought austenitic stainless steel piping fittings — 304, 316, 321, 347 series
- ASTM A860 — High-strength WPHY 42–70 fittings for pipeline construction
- EN 10204 3.1 — Mill test certificate documentation
Materials
| Material Category | ASTM / ASME Grades |
|---|---|
| Carbon steel | ASTM A234 WPB, WPC |
| Alloy steel | ASTM A234 WP1, WP12, WP11, WP22, WP5, WP91, WP911 |
| Stainless steel | ASTM A403 WP304/304L/304H, WP316/316L/316H, WP321/321H, WP347/347H |
| Low-temperature steel | ASTM A402 WPL 3, WPL 6 |
| High-performance | ASTM A860 WPHY 42, 46, 52, 60, 65, 70 |
Supply Enquiry — Pipe Tee
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