News
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Attractive opportunities in upstream oil & gas
The upstream oil & gas opportunities for valve sales are centered on two primary types of applications: wellhead and pipeline. The former are generally governed by the API 6A Specification for Wellhead and Christmas Tree Equipment, and the latter by the API 6D Specification for Pipeline a...Read more -
What the meaning of De.DN.D.d
DN (Nominal Diameter) means the nominal diameter of the pipe, which is the average of the outer diameter and the inner diameter. The value of DN =the value of De -0.5*the value of tube wall thickness. Note: This is neither the outer diameter nor the inner diameter. Water, gas transmission steel...Read more
