International Tolerance grade for Drilling?
150951
You may mean the ISO (International Standards Organization) tolerance grade, which is not limited to drilling (applies to all dimensions).  The method is an efficient way to express tolerances, and is being used more frequently on CAD drawings these days. (Smaller drills have tighter tolerances; larger drills have looser tolerances).\n\nMachinery's Handbook has the standard (and the ANSI/ASME version too), and is the most useful way to obtain the information.\n\nOtherwise, check the links out below - you can purchase the standard directly from ISO - there is not much free information on the Internet because it is copyrighted.
851740
The standard is available from ASTME for $55 US.  Depending on what you are looking for, the second or third reference may be of some help.  The last reference is the result of my search for the standard on Yahoo!
73838
Its' probably a rounding error. It would depend on which masses for the elements you use, how precise you want to be.
1068254
This is Measured in MTBF or Mean Time Before Failiure. Noramlly if you know the manufacturer you can get information on that through thier website.
207231
none i think. i guess you mean lead (lat. plumbum, chem. Pb)\n\ndid you ask due to the RoHS compliance?\nhttp://solutions.ihs.com/solutions/enterprise/rohs-weee.jsp?MID=W094&GCID=S14922x007-FORSITE&keyword=rohs&MATCHTYPE={OVMTC:search:search:content}
384170
These won't affect the integrety of the pipe. They are from the machine which extruded the metal into the shape of a pipe.\n\nThe rating characteristics: PSI, material make up, corrosion protection added, and ID are all met.\n\nA Pipe is made to a standard which must be assured by the manufacturer for the specific application intended. Testing on a periodic basis with a certificate of compliance is usually issued.
1034025
The pressure rating versus temperature for these classes of flange ratings is independent of the material being contained.\n\nThe best way to get a table or chart of the relationship between pressure and temperature is to contact a pipe, valve and fitting supplier in your yellow pages. If you can't find one, try the online yellow pages for Houston, Tulsa, Oklahoma City, Dallas or New Orleans.\n\nThe actual ratings are part of copyrighted documents published by ANSI and usually aren't available for free.
763583
If it was me, I would specify the Ra or RMS value, the surface type (cast, machined, polished, ect...), and also the surface hardness (Rockwell B or C scale).  If you have access to a Machinery's Handbook, check it out.
992008
empiracally ?? [[ignore spelling]]\n\ncompared against earlier well-drillings?\n\n(this would work ... "real-world" data is not elegant but it's very "real")
1038988
You need to look up ASTM A120. That is the standard for galvanized pipe.
1042454
I'm not familiar with this material, but sometimes websites that give info on materials and compounds include IR-specs.  Or, if you have a sample, call your local university.  Some one may be able to help you there.
425733
***Important Note***\nYou should consult a petroleum engineer who is familiar with the specifics of your work if you require this information for actual field work.  The sources below are fine if you are looking for general information not to be used in the field.\n\nYou need to be more specific about the information you need.  There are several 2 7/8" drill pipes available and the weight varies.  If you need to know the weight of drill pipe that has become stuck while drilling, you have to take buoyancy into account.  Try the first link for the weight and the second link for the discussion about buoyancy.
955533
Fracture toughness  \nUnit Name Symbol SI Equivalent  \n· ksi-sqrt(inch)  \n ksi-sqrt(in)  1.09884x106 Pa-sqrt(m)  \n· MPa-sqrt(meter)  \n MPa-sqrt(m)  1x106 Pa-sqrt(m)  \n· Pa-sqrt(meter)  \n Pa-sqrt(m)  1 Pa-sqrt(m)  \n· psi-sqrt(inch)  \n psi-sqrt(in)  1098.84 Pa-sqrt(m)
1020919
I don't know, but my husband's a mech. Engineer and he says:\nwww.matweb.com\nhas just about every material used and their engineering specs.  Did you check there?
889452
All materials shipped anywhere in the world will have a set of documentation appended. EIther it will be internal to a country, in which case the document could list what the substance is called locally, or it could be traveling internationally, in which case it must have a United Nations Identification Number.\n\n316 SS UN refers to the material known internationally as "stainless steel, grade 316".
823117
That is a pretty tall order.  You will find very little, outside of governmental regulations.\n\nIf this is for the US area, OSHA and the Coast Guard have regulations.  Also American Bureau of Ships\n\nOthers are Safety to life at Sea (SOLAS)  and Intergovernmental Maritime Consultive Organization.\n\nYou can find good information on hydrocarbon processing in documents from Americal Petroleum Institute, Oil Insurance Association, and regulations of freign governments.\n\nYou may find a document called "Mobile Offshore Drilling Units."  It was written to be considered by various governments as a standard regulation\n\nA good book on hydrocarbon processes is "Fire Protection Manual", by Vervalin\n\nIf you have access to a good library, a talk with a librarian would be a good place to start.
951368
my reference only has 1/2" x 13 threads per inch (american national coarse threads) and it calls for a 27/64 drill (.4219").  I'm thinking 10 threads is (coarser and larger ) so it should get a good "bite" on the id of the hole.  If its gets too tough to tap, you could add a bunch more oil or go back and drill a little bigger hole like maybe 7/16" (.4375)