Milled joint ends

Similarly, despite Thamm s advice, some designers choose to try and reduce the stresses at the joint ends by reducing the stiffness. This is best achieved by tapering, although single or multiple grooves or milled ends may be used as shown in Fig. 72. 

In making up the field joint it is possible for the coupling to make up slightly on the mill end. This does not indicate that the coupling on the mill end is too loose, but simply that the field end has reached the tightness with which the coupling was screwed on at the mill. 

DuPont and Genencor have reported a 500-fold improvement in productivity (Moore 1999). They announced that they would extend their research and development (R%26D) collaboration through the end of2001. DuPont is scaKng up the bioprocess by an announced joint venture with Tate and Lyle. At their Decatur, Illinois, com-wet mill, A.E. Staley, a subsidiary of Tate and Lyle, produces raw materials from renewable resources such as com. PDO production is being tested by... 

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