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Hi Alexandra, ANSI B16.34 is a good guide to ensuring the wall thickness of the pressure vessel (in your case a ball valve). What is the valve size you have bought, the material of construction (i.e. CF8M, LCC, 316, LF2 etc) and the pressure rating. ANSI B16.34 table 3 allows you to calculate...

Hi Noodles666, I know that an 1/2"API thread form is exactly the same as a 1/2" NPT thread to ANSI B1.20.1. We supply this thread type in a number of subsea valves to API6A PSL3/4. I don't know about the bigger thread types as never doen them but seen them on items such as tubing hangers etc...

Hi Steph100, I take it you are referring to Weir Materials? The problem is a number of multi national oil&gas end users are recently stating that material must be from Zeron100 as there is a lot of poor quality UNS32760 in the market failing with sigma phase and corrosion testing. As far as I...

Hi Midwest7, As a Quality Manager for a major topside and subsea valve manufacturer the key to a good Quality Management System is to keep it as simple as possible. You don't need hundreds of procedures and forms to make it work. Look at your business and ask what are we here for? We are all...

Hi Steve, Many thanks for your response on this matter. Completely agree with your comments. It was my understading also that M650 qualification is for CRA materials only. I also remember also a list but yes, it has been removed off their site. The onous is now on the manufacturer of the...

Hi Steve & Goahead, Thanks for the response. Customers within the Norwegian sector prefer to have material to Norsok requirements. There are numerour specifications from the Norsok website as Goahead has stated and we have been working to those for about 6 years. Norsok M630 covers the...

Can anyone help, I am looking for a Norsok M630 qualified casting foundary for the supply of LCC / CF8M / 4A and 6A castings. I have searched without success for over 2 weeks on the internet without finding anyone who is M630 qualified. Forging manufacturers not a problem, castings can't find...

Can anyone help, I am looking for a Norsok M630 qualified casting foundary for the supply of LCC / CF8M / 4A and 6A castings. I have searched without success for over 2 weeks on the internet without finding anyone who is M630 qualified. Forging manufacturers not a problem, castings can't find...

Is there a maximum permissable number of non-metallic inclusions in F316 stainless steel and LF2 carbon steel, used predominately in pressure vessel type applications and flanged components? ASTM E45 defines the testing process for identifying inclusions but there is no maximum level of inclusions.

Does anybody know of any guide notes that quantifies the acceptable levels of metallic and non-metallic inclusions in ASTM A182 F316 forgings for pressure vessels such as flanged double block and bleed valves. This application is used mainly in the oil and gas industry. The valves are either...