SUPERMAX, tubing connection, 1.900″ to 4-1/2″

SUPERMAX2, casing connection, 5″ to 13-3/8″

Design concept for SUPERMAX and SUPERMAX2

  1. Threaded and coupled connection applied on non-upset plain end
  2. Thread seal connection with unique thread form And thread engagement
  3. Run-out thread with thread form:
    • 2° Load flank For high joint strength
    • 45° Stabbing flank For easy stabbing
  4. Taper: 1/16
  5. Thread pitch: 8TPI SUPERMAX : 8 TPI, SUPERMAX2 : 5 TPI
  6. Pin: Bare
    Coupling: Phosphated


Feature of SUPERMAX Tubing


  • Non-upset tubing: SUPERMAX is threaded and coupled type connection which eliminates upsetting and normalizing processes from manufacturing cycle
  • Easy threading: Short length thread, easy machining and repair provided by patented thread form.
  • Cheaper accessories: Pup joints, cross-overs at a fraction of the cost compared to EUE.
  • Extended product life: Elimination of upset ends does not limit number of repairs.
  • Small coupling OD: Allows use of larger OD tubing than EUE, which improves production of oil & gas and reduces friction loss during well stimulation.
  • Resistance to galling: Provides multiple make and break capabilities


Some of the potential applications of SUPERMAX are as follows:

  • Production tubing where API EUE tubing is normally specified.
  • Low-pressure gas-well applications where premium connections are currently being used.
  • Tubing for high-pressure fracturing jobs.
  • Tubing for thermal applications.
  • Clearance programs where smaller OD than API EUE is desired but joint strength must be higher than API EUE.
  • Reclamation of API EUE tubing with insufficient upset length



Feature of SUPERMAX2 casing

As well known, API round thread has good sealability but low joint strength, but on the other hand API Buttress thread has high joint strength but poor leak resistance.

SUPERMAX2 has joint strength as high as API buttress thread, and has leak resistance as good as API round thread.


Frac. Job through casing, especially deep wells or high temperature wells which require high joint strength on casing.

Modified Coupling with Non-metallic seal

Modified coupling with non-metallic resilient seal to enhance gas sealability for SUPERMAX and SUPERMAX2 is available.


Metal One Corporation and its parents, subsidiaries or affiliates (herein collectively referred to as "Metal One") do not warrant the accuracy or completeness or timeliness of the information, text, graphics, links, or other items contained in the site. While every effort has been made to ensure the accuracy of the information, Metal One does not assume any responsibility or liability for any loss, damage or injury resulting from the use of information and data provided herein. It is the responsibility of the customer to make all engineering and safety-related determinations for their own account. Customers should therefore undertake all necessary investigations when developing the technical solution and safety factors for the specific installation and operating conditions for the products. Metal One’s products are not recommended for use in deep water offshore applications. For more information, please contact your Metal One sales representative or refer to here, the contents of which will apply to any purchases of these products.