Parameters

Abroad company

Chinese company-1

Chinese company-2

D a/mm

6.54

6.54

6.54

φ₁ /˚

45˚

45˚

45˚

H₁/mm

32

38

38

H/mm

60

70

70

K/mm

44.6

59

60.5

B₄/mm

43.717

45

45

B₁/mm

80.6

86

86

L/mm

106

105

103