oil jack
2.Products are: super high pressure electric, pneumatic, manual oil pump; pre-stress Jack for the use of coal mine and construction; steel bar and cable scissor; all kinds of bolt for safety supporting and bolting (KM19 and KM22 bolt have all got the certificate of “MA” in China.); cable anchor and bolt test stand; hydraulic nut scissor and etc.
5.Relating with the experience and practices in the two_position cold extrusion technology for the oil cylinder and in the design of the die, cold extrusion, especially the superiority and the technological characteristics of two_position cold extrusion, was expounded. The technological process and the design of the die were stated in detail, which can serve as a reference for the hydraulic jack industry and for processing long canister_shaped parts with high requirement in their inner holes.
