Perforation casing is the main raw material for manufacturing various high-performance perforating guns for oil and gas wells.

HYST has independently developed 110ksi-140ksi series perforation casing. The products have excellent mechanical properties and impact toughness, and are widely used in well-known oil service companies at home and abroad, such as CNOOC and Halliburton.    
      
At present, the production of China perforation casing generally follows YB/T 4371-2014 industry standard drafted by HYST, or Q/OHAD005-2015 enterprise standard, or technical agreement.

Product	Size		Steel Grade	Specification	Typical Applications
	OD/mm	WT/mm
Perforation	60.3~127	5~15	110ksi 125ksi 130ksi 140ksi	YB/T 4371-2014 or Q/OHAD005-2012 or technical agreement	Perforating Gun