if code of construction is ASME sec1, it is required or if it is Sec8, preheat is enough upto 38mm
THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, CSWIP 3.1,
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On Thu, Dec 17, 2020 at 10:33 AM furkan topaloğlu <topaloglufurkan8@gmail.com> wrote:
In order to reduce the risk of cold cracks due to thickness and stress, PWHT can be applied to provide slow cooling after welding.Jamie Reyes <jamiejrmachineco@gmail.com>, 17 Ara 2020 Per, 06:55 tarihinde şunu yazdı:What is the code of construction?What is the type of service?Is Lethal Services involved?Need the above mentioned information.....Regards,Jamie ReyesJ.R. Machine Company, Inc.--On Wed, Dec 16, 2020 at 7:47 PM thanh tung Nguyen <tungexp.268@gmail.com> wrote:Dear Experts,--Hope you all are well.I have a question is about the weld of the base material of CS (or Low temp. CS) with wall thickness greater than 25mm, Do we still required PWHT if we applied a preheating process before, or PWHT is no longer mandatory?And which reference can be found?Thank you & best regards./.
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Furkan TOPALOĞLU
Metallurgy and Material & Welding Engineer
Metalurji ve Malzeme & Kaynak Mühendisi
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