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PWHT
Post Weld Heat Treatment (PWHT) is a common requirement for pressure equipment manufacture, to service this we have in-house PWHT and extensive experience in this process.
The furnace is calibrated, fitted with a chart recorder and four temperature probes, charts are provided on completion. Heat treatments can be provided upto 750ºC for extended soak times for fabrication upto 20 tonnes and with-in a 4sqm x 7m long dimensional envelope.
The furnace is located within our workshop, so it is supported with overhead crane capacity for easy unload and re-loading onto transport. Our workshop personnel are experienced in heat treatment and can provide the necessary support to ensure your fabrications will be proceeded quickly and effectively
We also have a wide network of heat treatment providers if you have a specialised need or a small project that does not require the services of our larger furnace.
We have a wide network of heat treatment providers if you have a specialised need or a small project that does not require the services of our larger furnace. We also have experience and partners to support local heat treatment for larger vessels where a closing seam local PWHT is build strategy is required.
![LA3250 - Caltex, Exchanger - 354, Local PWHT CrMo-460 seam (C5) (354, 2015-01-09)](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_1500,h_2000/https://www.la.services/wp-content/uploads/2021/05/LA3250-Caltex-Exchanger-354-Local-PWHT-CrMo-460-seam-C5-354-2015-01-09.jpeg)
![LA2909 - Origin, Vessel - Air cooling normalised head (2012)](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_1632,h_1224/https://www.la.services/wp-content/uploads/2021/05/LA2909-Origin-Vessel-Air-cooling-normalised-head-2012.jpeg)
![LA4043 - Toyota, Vessel - PWHT, On furnace table (2020)](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_2000,h_1339/https://www.la.services/wp-content/uploads/2021/05/LA4043-Toyota-Vessel-PWHT-On-furnace-table-2020.jpeg)
![LA2125, Woodside, Vessel - PWHT completed ( 2006-10-16)](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_2000,h_1500/https://www.la.services/wp-content/uploads/2021/05/LA2125-Woodside-Vessel-PWHT-completed-2006-10-16.jpeg)
Case Study
Completed 2019
Packinox Bundle Replacement Project
The refurbishment of Caltex’s Packinox heat exchanger required a bundle replacement to solve efficiency problems.
To do this the 80mm thick head needed to be cut off then re-welded into position.
With asset down time being costly an accelerated welding method was required to be able to complete the refurbishment within a planned refinery shutdown window.
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