Dưỡng Kiểm Ren Ngoài Eisen SRH
Pipe Thread Ring Gauge (JIS method)
|
Type of thread
|
No. of Threads
(threads/inch)
|
Type of gauge
|
Class
|
|
PF1/8
|
28
|
GR/IR/WR
|
A
B
|
|
PF1/4
|
19
|
|
PF3/8
|
19
|
|
PF1/2
|
14
|
|
PF5/8
|
14
|
|
PF3/4
|
14
|
|
PF7/8
|
14
|
|
PF1
|
11
|
|
PF1 1/8
|
11
|
|
PF1 1/4
|
11
|
|
PF1 1/2
|
11
|
|
PF1 3/4
|
11
|
|
PF2
|
11
|
Pipe Thread Ring Gauge (ISO method)
|
Type of thread
|
No. of Threads
(threads/inch)
|
Type of gauge
|
Class
|
|
G1/16
|
28
|
GR/NR
|
A
B
|
|
G1/8
|
28
|
|
G1/4
|
19
|
|
G3/8
|
19
|
|
G1/2
|
14
|
|
G3/4
|
14
|
|
G7/8
|
14
|
|
G1
|
11
|
|
G1 1/8
|
11
|
|
G1 1/4
|
11
|
|
G1 1/2
|
11
|
|
G1 3/4
|
11
|
|
G2
|
11
|