Re: [MW:32078] SMALL DIAMETER PROCEDURE QUALIFICATION AS PER ASME SEC IX

There are certain aspects to be considered in this requirement. Though Plate PQR qualifies for Tube and pipe also irrespective of diameter but the welding process is Automatic orbital GTAW which may require special fixtures for welding Plate or Pipe.

Please find below snap shot of ASME Sec.IX for Transverse Root and Face Bend tests for small diameter tubes.

Please contact a Good Testing Laboratory which may guide you further.

Thanks & Regards

J.Gerald Jayakumar

On Friday, 19 March, 2021, 03:39:00 pm IST, George Dilintas <dilintas@gmail.com> wrote:

Diameter is not an essential variable for PQR. Why you torture your self?

Στις Πέμ, 18 Μαρ 2021 στις 5:07 π.μ., ο/η Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> έγραψε:

Dear Experts ,

PQR is to be qualified  for 

6.35 mm OD X 0.89 mm thickness 

Welding Process - Autogenous Fusion - GTAW Orbital WELDING 

Code - ASME SEC IX 

Material - SA 213 TP316L

Tensile test - 2nos 

Face bend test - 2nos

Root bend test - 2nos 

Full section tensile test is carried out and found satisfactory 

Bend test samples can not be prepared due to less thickness(0.89mm) and small diameter (6.35mm).  Pipe Sectioning  as per permitted by ASME  for small diameter is tried  but could not do it .

When tried to  cut into sectioning for  bending test piece preparation , pipe is getting bent and sectioning is not possible .

 Experts , Pl. help how to go about bend testing or any other way forward 

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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