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dimension ratio

The average specified diameter of a pipe divided by the minimum specified wall thickness.

standard dimensions ratio (SDR)

The ratio of the average specified outside diameter to the minimum specified wall thickness of a pipe.
References in periodicals archive ?
In such a scenario, SDR is seen as an enabler for 'multiprotocol multiband' (MPMB) support in commercial base stations.
More information on joining the SDR Forum will be available at the SDR Forum's annual technical conference, product exposition and general meeting - being held at the Denver Marriott Tech Center Nov.
Spectra 2 represents the validation of the COTS SDR market by SDR developers and the establishment of PrismTech's solution as the leading COTS implementation of the SCA.
PrismTech's Spectra SDR Developer Suite is also fully integrated with the Spectra OE running on INTEGRITY to provide a seamlessly integrated suite of SCA waveform modeling, code generation, test and deployment development tools.
Based upon our initial tests of an LTE system, the entire PicoZed SDR module used less than 5W of power, said John Shanton, MILCOM system architect, Xilinx.
You can submit your SDR online using the Army Electronic Product Support (AEDS) website.
Electronic follow-ups were not sent to the shipper: If the shipper did not provide disposition of the material SDR, another copy of the SF-364 indicating that this copy was a follow-up was printed.
SDR Technologies designs and implements software that allows governments to accept forms filed via the Internet, a concept that seemed unusual in 1994, when SDR installed its first system.
org), a non-profit international industry association dedicated to driving the future of radio communications and systems worldwide, today announced a new Software Defined Radio (SDR) market study, available to members only, and the public release of six previous SDR market studies and two reports.
The SDR interest rate provides the basis for calculating the interest charged to members on nonconcessional IMF loans from the IMF s general resources, the interest paid to IMF members on their remunerated creditor positions in the IMF (reserve tranche positions and claims under borrowing agreements), and the interest paid to members on their SDR holdings and charged on their SDR allocation.
the leading supplier of programmable system solutions, and the Software Defined Radio (SDR) Forum, a non-profit organization dedicated to supporting the development and deployment of software defined radio systems, today announced that Xilinx will participate in the SDR '02 Conference and Product Exposition on November 11-12, 2002 in San Diego, California.
Included in the eBusiness Suite are on-line requisitioning, supply discrepancy reports (SDRs), quality deficiency reports (QDRs), FMS Initial Support Tracking (FIST), SDR Status Center, as well as access to excess defense articles, and the Management Information System for International Logistics (MISIL) Information Warehouse.