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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 ?
You do not have to have an AEPS userid to submit an SDR but you do need the userid to check the status in AEPS.
NAVSISA was given the task to develop an enhancement to the SDR Web site that would meet this goal.
Kimball said SDR has contracts with 10 state governments, several federal agencies and numerous municipal governments.
SDR Market Study Task 6: The Telematics Market SDR Market Study Task 5: The Cognitive Radio Market SDR Market Study Task 4: The U.
At the direction of the NAVAIR/NAVSUP International Logistics Enterprise Team (ILET), a QDR form, see Figures 4 and 5, was developed to improve and supplement the SDR process.
The detailed survey of P25, TETRA and SDR vendors, presented in this report, reflects their up-to-date portfolios characteristics.
Huawei has established a significant roadmap in terms of SDR development and deployment," said Zhu Haobing, Vice President of Huawei's Wireless Product Line.
The SDR Forum[TM], a non-profit member consortium dedicated to promoting the success of next-generation radio technologies, announced at its 63rd General Meeting in Dearborn, Michigan the appointment of Claude Belisle as Chair of the Technical Committee and of Eric Christiansen on the Board of Directors, representing the Large Companies.
a leading global technology distributor, today introduced the PicoZed SDR Z7035/AD9361, a rugged, low-power, small footprint system-on-module (SOM) that integrates critical RF signal path and high-speed programmable logic, enabling designers to dramatically reduce cycle times for development of the RF-to-baseband signal processing core for wireless communications systems.
WASHINGTON -- The SDR Forum[TM], a non-profit member consortium dedicated to promoting the success of next generation radio technologies, announced today that it has expanded its Achievement Awards program and opened nominations to its membership.
On December 22, 2014, the Executive Board of the International Monetary Fund (IMF) decided to replace the three-month Eurepo rate as the euro component of the SDR interest basket with the three-month spot rate for euro area central government bonds with a rating of AA and above published by the European Central Bank (click link for details about the interest rate and the estimation method).