Material Test Certifications for Cast Iron Valves

Simply refer the Client to the specification that was in place at the time the order was accepted.

Do we need Material Test certificate for UL listed & FM approved products.

Well, the answer to that question is stated in the original posting; it would appear that the <...we...> does need them in order to satisfy the curiosity of the <...client...>.

Where called for, material certificate is a must. It is a record for study of future failures. Your valve supplier can get it from his casting supplier. Or there are now digital spectrometers with specialised inspection agencies. You can use their services and submit the certificate to the client

Hi...

You must specify what type of documenntation you require right in the begining including the type & extent of test certifications.

Usually material test certificates are handed out as prescribed in EN-ISO-10204. This may please be reffered.

Anil Tiwari / Delhi

Hi Sajid,

Normally client or his consultant asks for QAP (Quality Approval Plan). In this plan required documents, material specs.,type of tests (physical,chemical) , test certificates, testing authority etc are specified. QAP is approved by the customer or his consultant. I do not know if QAP was part of the order. If your client permits you can take chips of casting by drilling small blind hole in the flange or other portion and get chemical tested.

Check the clients original documentation requirements. If they did not call out for material test reports, you will have to advise them that they are not available.

What you did not clarify is if the customer wants TYPICAL or ACTUAL MTR's.

Typical MTR's do not correspond to that exact valve, but provide an idea on a typically the material of construction of their valve.

Most Cast Iron valves are not 100% traceable (which means each casting has a unique heat # that would correspond to that cast lot, which then in turns ties you back to a material test report). If you did not request MTR's at the time of order placement with your vendor, AND their valves are not 100% traceable through heat #'s, then it is IMPOSSIBLE for them to provide you with actual MTR's.

If your client insists on ACTUAL MTR's, then your only recourse is to have someone perform a material analysis on the valve (a special laser gun is used).

As an alternative, if your client will accept a certificate of conformance, then I suggest having the manufacturer provide you with a certificate of conformance to their data sheet (it must list the ASTM grade of Cast Iron) and include the ASTM standard for that grade of Cast Iron to your client.

If none of the above are successfully, then unfortunately, you will need to return the valve, and have one specifically made to meet your clients ACTUAL MTR requirement.

In actuality, I believe that Cast Iron valves (or any cast valve for that matter that is not Stainless Steel) typically is exempt from MTR requirements. MTR's are typically request for Stainless Steel valves, Crome Molly Valves, Forged Steel Valves, but not Cast Iron valves, because MTR's are only needed in critical applications, and a Cast Iron valve usually is not the type of valve you use for critical applications.

Good luck to you!

Hi....

It is incorrect to state Cast Iron valves don't need MTR's. i have supplied large diameter 1600mm & 2000mm CI butterfly valves (body & flap were CI) for cooling water service in large power stations as per IBRD (world Bank) tenders. These valves were manufactured according to a customer pre-approved QAP with full traceability. All material & other test certifications were provided in accordance with clause 3.1(b) of DIN-50049 with is now renamed as EN-ISO-10204. These valves have been performing well for over 20 years now.

I agree that incase a vendor has comitted to his client to supply the certications the client has full rights to demand these documents otherwise reject the material.

Anil Tiwari / Delhi