Studded Tees and Crosses

Standard Carried:  API Spec 6A, NACE-MR0175

Nominal Bore:  2 1/16 in, 2 9/16 in, 3 1/8 in, 3 1/16 in, 4 1/16 in

Rated Working Pressure:  2000 psi ~ 20000 psi (14Mpa ~ 140Mpa)

Material Class:  AA, BB, CC, DD, EE, FF

Material:  AISI4130 Alloy or AISI410 Stainless Steel

Connection Type: Flanged or Studded

Temp Class: L, P, R, S, T, U, V

Product Specification Level: PSL1 – PSL4

Performance Requirement:  PR1, PR2

Application: Wellhead Assembly & Christmas Tree


Studded Tees and Crosses are the main components of the Christmas Tree. When the angled connection is required, cross and tees need to be installed on X-mas Tree. They are designed and manufactured according to API 6A standards latest edition. Common configurations include 3-way and 4-ways. Pressure ratings range from 2,000 to 20,000 psi.


  1. The basic material is usually AISI 4130 Alloy Steel or AISI410 Stainless Steel
  2. Ring groove overlaid like SS 316L or Inconel 625 on ring groove can be incorporated for corrosion resistance.
  3. Studded/Flanged crosses and tees shall undergo hydrostatic body test and drift test as per API 6A standards prior to delivery
  4. Custom sizes and specifications are available upon request
  5. Simple structure with reliable performance



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