Hi
my question is about welding procedure that is combination of GTAW and SMAW . WPS requires impact test.according to B 31.3 states “impact specimens shall be made for each welding procedure, type of electrode, or filler metal (i.e., AWS E-XXXX classification) and each flux to be used.” do we...
Hi everybody
I have a question about substitute P355 NL2 plate whit A516 Gr 70 plate in Liquid Petroleum Gas (LPG) tank that is designed by BS 7777 standard .
According to construction procedure we have to use P355 NL2 plate for first three meter of wall liner of LPG tank; but we used A516 Gr70...
hi
I have a quesion about hydrostatic test of GRP PIPES, (Glass Reinforced plastic piping materials).
when PN number of a GRP pipe is (for example) 20, means maximum test pressure is 20 bars.
but these pipes test by hydrostatic test at 28 bars in the factory that is more than 20 bars. Why do...
Hi
according to the API 1104 : Root and Face Bend tests shall be replaced by Side Bend tests for wall thickness greater
than 12.7 mm.
what is the reason of this change?
Hi evrybody
according to the NACE MR 0175 electorde for welding carbon steel NACE shall not be with more than 1% Ni.
Can we use ER80S-Ni1 for welding NASE C.S. ?
Hi
There are some ambiguity about below sentence:
Welding procedures shall be prepared and tested in accordance with AWS D1.1. Use of pre-qualified procedures will be acceptable,provided that certified test results showing conformance to specification requirements are submitted to and approved...
Hi every body
I have a question about paragraph 341.3.4(e) B31.3:
(e) if any of the items examined as required by (c) above reveals a defect, all items represented by the progressive sampling shall be either:
(1) repaired or replaced and reexamined as required;
or
(2) fully examined and repaired...
Hi every body
I have a question about preparing PQR for S.S. 316l to API 5l Gr B and S.S.321 to API 5L Gr B welding.
Does these PQR need to Impact test for accepting welding method?
please let me know according which standard or code I can discern that dissimilar material welding need to impact...
