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Re: [MW:35748] PQR- Chemical testing requirements

By Materials & Welding
Hi All,
     Chemical testing is mandatory for Corrosion resistant/Hard facing overlay PQR but not butt welds.

Regards,
Mr. Harish.


On Sat, 2 Aug 2025 at 15:41, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Inaddition to the below. Please ensure

1. Minimum Design Metal Temperature (MDMT) to determine the Impact test requirement. Normally A 106 Gr,.B pipe used for a temperature of -29degC.
2. Please check with Mechanical Testing Lab, how many (2inch Pipe) coupons required for the PQR, may be 4 Nos

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635



On Friday 1 August, 2025 at 10:09:34 pm IST, sridhar cn <sridharcn305@gmail.com> wrote:


For your 2-inch 8 mm thick CS pipe welded, as per ASME Sec. IX standard, you require:
Visual examination,
2 Tensile tests, 
2 each in the face and root bends.
No hardness, impact  and chemical tests are required. 
Use the MTC of the base metal if required.
Micro/Macro are required for Fillet weld only.
C Sridhar.
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On Fri, 1 Aug 2025 at 16:58, kingslygeo vargheese <kingslygeotech@gmail.com> wrote:
Good Day to all,

Reference std: ASME SEX IX

Material ASTM A106 Gr B

Pipe Dia and thickness: 2" and 8.74 mm.

Service Fluid: Normal fluid

as per the Standard ASME SEX IX ( no client/company specification involved )

1. What are the minimum testing requirements to qualify the PQR?

2. Is chemical testing required or not?

Thanks 

Best Regards
V.Kingsly Geo




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