CROSSOVER CASING:AISI 4145H-120KSI 6-5/8IN GPDS-55 BOX TOP 4-1/2IN IF (NC 50) PIN BOT ALLOY STL BP G
CROSSOVER CASING:AISI 4145H-120KSI 6-5/8IN GPDS-55 BOX TOP 4-1/2IN IF (NC 50) PIN BOT ALLOY STL BP GIS 02-103 (REVISION 1) : SPECIFICATION FOR DRILL STRING SUBS API SPEC 7-1 (ISO 10424-1)
CROSSOVER CASING:AISI 4145H-120KSI 6-5/8IN GPDS-55 BOX TOP 4-1/2IN IF (NC 50) PIN BOT ALLOY STL BP GIS 02-103 (REVISION 1) : SPECIFICATION FOR DRILL STRING SUBS API SPEC 7-1 (ISO 10424-1)
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