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SEAMLESS STEEL PIPE, METHOD OF PRODUCING A HIGH STRENGTH SEAMLESS STEEL PIPE, USAGE OF A SEAMLESS STEEL PIPE AND PERFORATION GUN
Free accessEuropean Patent Office | 2017| -
High-strength TBM center cutter box and preparation method
Free accessEuropean Patent Office | 2020| -
Compressive residual stress-hardened downhole tool shaft region
Free accessEuropean Patent Office | 2020| -
High-hardness iron alloy and preparation method and application thereof
Free accessEuropean Patent Office | 2020| -
Preparation method of high-precision part of deep sea Christmas tree control module
Free accessEuropean Patent Office | 2022| -
Cutting tooth, cutting tooth production technology and cutting tooth production device
Free accessEuropean Patent Office | 2020| -
ULTRA-HIGH TOUGHNESS AND HIGH STRENGTH DRILL PIPE AND MANUFACTURING PROCESS THEREOF
Free accessEuropean Patent Office | 2015| -
Method for manufacturing superior 13Cr thickened drillrod
Free accessEuropean Patent Office | 2019| -
Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment
Free accessEuropean Patent Office | 2019| -
Pipe body material for clamping area of drill pipe slip and heat treatment processing technology
Free accessEuropean Patent Office | 2024|
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