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Dear Experts We are high pressure injecting Aluminum Grade ADC12. The part is 30cm x 30cm x 1.5 cm (ht). Injection pressure is 150 bar. Once injected we rough grind the surface and then send for sand blasting. After sand blasting we are not getting a uniform appearance on the surface. Near...

Hello Everyone, I need to weld a ring onto the surface an L-80 13Cr Sumitomo casing. There is a pre-weld heat treatment required and also a PWHT (post weld heat treatment). Can anyone explain the procedure and some of the science behind the PWHT. If it's any help, the end product is a sand...

I would like to calculate the collapse strength and tensile strength of an API casing which has been perforated over 16% of it's surface as per the following: API 13 3/8", K-55, 54.5 PPF, Range 3, BTC. Perforated with 5/8" holes uniformly positioned across the length and circumference of the...

I am producing pins (male fittings on extension pipes) for a job in Libya. The raw material is Chinese manufactured seamless SS304L, 6 5/8" casings. My problem is, when they have score lines inside the casings from the mandrel, they do rotational grinding to make a uniform inner diameter...

I am threading buttress on 7" seamless SS304 casings. As I get to the end of the thread there are areas where the cutting tool doesn't come into contact with the casing (due to tolerance in straightness / roundness) What does API 5B allow? I"ve got the specs but I haven't been able to find...

Dear All I have files on a disc which are .exp extension. I am using Catia V5r16. How can I open the files with the exp extension?

Hi All I've recently been asked to quote my product with female threaded fittings (12 3/4") made by centrifugal casting as per ASTM A451. Normally I roll and thread (SS304) in house or buy a seamless tube and thread. What is the advantage to centrifugal casting over seamless tube? Costly...

Please explain to me the solution(s) used in annealing, pickling, and passivating SS304, 304L, 316 materials. What is the purpose of this treatment? Is there literature out there that I can download which will go into the details of why this process is used? After the process is there any...