Counter-rotating dual-hole barrel screw specifications:

Diameter: φ45-φ200 (according to the demands of customers)

Length-diameter ratio: L/D=16-35

Conical dual-hole barrel screw specifications:φ25／φ45-φ92／φ188 (according to the demands of customers) 

The screw compressor can be designed according to different products and formulas

Technology index:

Nitriding layer depth: 0.5-0.8mm

Nitriding layer hardness: ＞950HV

Nitriding brittleness: ＜level 2