The API 5L High-Yield Seamless Tees (Grades X42 to X80) are specialized branch fittings for high-pressure transmission pipelines. Engineered for "cryogenic" reliability, they undergo mandatory Charpy V-Notch testing at $-46^\circ\text{C}$ to prevent brittle fracture in arctic environments. These tees match the chemical and mechanical properties of high-test line pipes, providing a seamless 90° transition that maintains the full pressure rating of the system in demanding oil and gas applications.
Technical Attributes: API 5L High-Yield Seamless Tee
Material Grade,"API 5L X42, X52, X60, X65, X70, X80"
Product Type,Seamless Equal or Reducing Tee
Design Standard,ASME B16.9 / MSS SP-75
Yield Strength,290–555 MPa (42–80 ksi)
Tensile Strength,415–760 MPa (Grade Dependent)
Impact Testing,Charpy V-Notch (27J at −46∘C)
Manufacturing,Seamless (Hot Forged / Hydraulic Bulge)
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per ASME B16.25
Size Range,1/2" to 24" (Seamless)
Wall Thickness,"Matches API 5L Pipe (STD, XS, SCH 80, etc.)"
Heat Treatment,"Normalizing, Quenching, and Tempering"
Carbon Equivalent,CE≤0.43% (Optimized for welding)
Service Class,Sour Service (NACE) / Low Temp / High Pressure
Hardness,≤22 HRC (Grade dependent)
Testing Standard,"100% UT/RT, Hydrostatic, Magnetic Particle"
Surface Finish,FBE Coated / Black Vanish / Anti-rust Oil
Certification,EN 10204 3.1 / API 5L MTR
Application,Arctic Pipelines / High-Pressure Gas Mains
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
