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Hot-formed WPB, WPC, & WPR fittings, upon which the final forming operation is completed at a temperature above 1150ºF (620°C)and below 1800ºF (980°C), need not be heat treated if they are cooled in still air Cold-Formed WPB fittings, upon which the final forming operation is completed at a temperature below 1150ºF (620°C) shall be normalized, or shall be stress relieved at 1100ºF to 1275ºF. (595 to 690°C)
Post Bending Heat Treatment (PBHT) (IS) an important aspect for high frequency induction bending in achieving the result of a desired qualified hot bends. After bending, distortion occurs, leading to a corresponding drop in its mechanical properties.
Technobend has the in-house heat treatment facilities for post bend heat treatments including normalising, annealing, tempering, and quenching. Our electrical furnaces are calibrated & certified acc to API 6A.
The ASME code provides stringent guidelines & regulations on the permissible tolerances allowable to address the final desired mechanical values for a integrity bend.
All electrical furnace shall have a recording device directly attach to the electrical furnace. The furnace shall be calibrated & survey annually acc to API 6A, to maintain uniformity of heat treatment. Thermocouples shall be attached to each furnace load. The furnace shall be controlled within tolerances ±15°C (±25°F).
Valid API 6A Furnace Calibration certificate shall be attached as part of MDR.
Gandaria 8 Office Tower Unit 16-J
Gandaria City, Jln Sultan Iskandar Muda
Jakarta Selatan 12240
Tel : +62-21-29303497-98
Fax : +62-21-29303489
M : +62 8192200962 (Ken Ng)
E : sales@technobend.com, ken@technobend.com
Jl. Raya Cileungsi – Jonggol No.3 KM 7, RT. 02/ RW. 04
Kel. Gandoang, Kec. Cileungsi, Bogor Indonesia.
Postal code 16820
