Recent content by weldquals

The product/service is Liquid Hydrogen with operating temp of -425F, material is A312 TP316/321. Do you need to test it @-425F or at -320F impacts? Thanks

Danlap, Thank You for this info and terminologies. This is a closure test with test flange connected to nitrogen bottle on side A and no blind flange on side B. We spray soap solution directly to side B and check if there's leak on the closure. Regards

To Danlap, Thank you for your response. Let me rephrase my question with more info. Can we use soap solution for leak test (by spraying the other side of the valve)? Blind flange installed on one end where Nitrogen is introduced and then pressurized it @72.5psi. The requirement is no leaks and...

Is it allowed to use soap solution (Snoop) on Seat closure leak test. We are testing per API-598? TIA

Good Day To All! I have a 3000lb capacity Pandjiris positioners and I want to use it to rotate a 42" dia pipe (18000 lbs). My question is how many rollers (rubber/ steel) do I need to use? I know there will be friction on the rollers. Thank You in advance

To All, A.For ordering plate from the mill a Plate material specification is been issued. B. One of the requirement for ordering is a PWHT coupon specifying the time and temperature it has to undergo . 1. For Item A - How would i know if the Plate material specification our engineering issued...

Thanks Guys, By the way the vessel will be built here in Thailand and shipped to Belgium. Cheers

To All, We are going to fabricate a ASME section VIII div 2 vessel and we are required to have an ASME U Stamp. We are already on the process of getting the certification. My question is do we need to register to the National Board or secure permit from them? Thanks in advance Weld quals

Thanks, How about if there is PWHT?

Gents, Any information on how many hours are required after welding a 537 CL 1 material together before we UT? Any info regarding delayed cracking in this type of material?

You can also used 9% Nickel (A553 Type 1) 9% Nickel Steel High strength (100ksi UTS) Excellent cryogenic toughness to –320F Note: Weld metal is normally nickel alloy Nickel content provides Good hardenability when quenched Tempering cause reversion of 10-15% of steel to austenite (produces the...