Dear P C T,
You can select 6" SCH 80/XS (t=10.97 mm)
or
8" SCH 80/XS (t=12.7 mm) pipe test coupons for this purpose.
JijiLal K.M.,Welding Engineer,
Al banna Engineering LLC.
BPCL Kochi refinery expansion project.
Jiji Lal K M
# 9846128141
On 28 July 2015 at 01:43, Prince C thomas <princecthomas@gmail.com> wrote:
Dear all,--In our district cooling CS ( ASTM A106 Gr,B) pipeline project, pipe wall thickness is from 3.2 mm to 20.62 mm. and our WPS is qualified and now we have to conduct welder qualification test.So what is the minimum test coupon thickness we should select so that welder can weld upto 20.62 mm thickness pipe during production.WPS Details:Welding process: GTAW & SMAWBase metal thickness range : 5 - 22 mmWeld metal groove for GTAW ; 6mm and SMAW - 16 mmPrince C Thomas
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