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ASTM B705

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SJones

SJones

Petroleum
Apr 22, 2001
3,934
ASTM B705 clearly states that the pipes shall be welded with no addition of filler metal yet a number of European manufacturers all happily use filler metal and then certify their pipe as meeting ASTM B705. Am I missing something in B705; or, can anything the manufacturer likes be printed on materials certificates?

Steve Jones
Materials & Corrosion Engineer
 
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I think its a case of buyer beware. There is a reason that many companies have their own quality control inspectors and vendor evaluation and selection teams, or lacking that, subcontract their inspection and Q/A out to a rather small number of highly qualified and reputable companies.

Its a good thing to get to know your mills and fabricators, from their raw material suppliers, into their production methods, testing and quality control practices, and do that on a first hand basis. There is no substitute for visiting the shops as part of the qualification process and to have inspectors watching the inspectors during production, testing and delivery. After all, there are many materials on the market that, even if produced to spec on the day they left the shop, wouldn't meet the spec today. It seems that not only fruits and vegetables are perishable. Inspection and Q/A/C is a full time job, almost as much as is making a quick buck.

BigInch[worm]-born in the trenches.
 
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These are no back street manufacturers! The ones I am referring to are highly established suppliers to the oil & gas industry; it's just that they like, nay absolutely insist upon, putting filler metal in the welds of their B705 pipe and then still call it B705. The quality is probably good (but another issue for the purchaser to monitor) but how can B705 be written on the materials certificate and be stencilled on the side of the pipe?

Steve Jones
Materials & Corrosion Engineer
 
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