PQR- Chemical testing requirements

[kingslygeo vargheese]

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

[sridhar cn]

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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[RAJESH PATNAIK]

Chemical testing is not mandatory until unless requirement from Clients, we do Chemical Testing of PQR, this is the requirement of the Client to confirm whether the used electrode batch is meeting the requirements or not.

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Thanks & Regards,

RAJESH PATNAIK PITTADA.

Mobile : +919573410309 

              

[Vishwas Keskar]

Tran.tensile test -2nos

Face bend -2nos

Root bend - 2nos

QW451 ASME SEC IX 

VISHWAS

IWE

Sent from my iPhone

On 1 Aug 2025, at 4:57 PM, kingslygeo vargheese <kingsly...@gmail.com> wrote:



[james gerald]

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

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYiiBNyD2uUd-5Z58tc9EKRRetUPqEDL-s8jqdb8JVF8Anw%40mail.gmail.com.

[Harish Kannepalli]

Hi All,

     Chemical testing is mandatory for Corrosion resistant/Hard facing overlay PQR but not butt welds.

Regards,

Mr. Harish.

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/779222670.615472.1754106824240%40mail.yahoo.com.

[Mohmmed Dudhiyawala]

As answered by everyone, chemical is not required.

Notwithstanding, please note that A-No. which denotes weld metal chemical composition is an essential variable, but carbon steel weld metal falls into A-No.1 only. 

Pl note your PQR will be valid only for those weld consumables which gives deposits matching to A-No.1 & 2 only, as per section IX.

Regards,

Mohmmed