The company now has five oil casing production lines, two coupling production lines, one high steel grade ERW casing line and one heat treatment production line. The company has the most advanced CNC threading machines, coupling make-up machines and hydrostatic testing equipments. To ensure the product meets quality standards and customer’s requirements, company has set up several on line inspection methods in important production processes , such as full length drifting , non-destructive testing, thickness testing, hydrostatic testing, length and weight measuring, and so on.