TIÊU CHUẨN REN ỐNG NƯỚC N.P.T (REN CÔN)
CỠ REN N.P.T. INS
ðẦU ðỰC ðƯỜNG KÍNH ðỈNH
REN O.D. mm
ðẦU CÁI ðƯỜNG KÍNH ðỈNH
REN I.D. mm
1/8 - 27 9.9 8.4
1/4 - 18 13.2 11.2
3/8 - 18 16.6 14.7
1/2 - 14 20.6 17.8
3/4 - 14 26 23.4
1 - 111/2 32.5 29.5
11/4 - 11
1/2 41.2 38.1
11/2 - 11
1/2 47.3 43.9
2 - 111/2 59.3 56.4
21/2 - 8 71.5 69.1
3 - 8 87.3 84.8
N.P.S. THREADS
N.P.S. THREAD SIZE INS
FEMALE THREAD I.D.
mm 1/8 – 27 8.6
1/4 - 18 11.9
3/8 – 18 15
1/2 – 14 19.1
3/4 – 14 24.6
1 - 111/2 30.5
11/4 - 11
1/2 39.4
11/2 - 111/2 45.5
2 - 111/2 57.4
21/2 – 8 68.8
3 – 8 84.6
Các thông s ố ren ống NPT (National Pipe Thread)
ðộ dày ống Cỡ ống TPI OD S L Sch.
40 Sch. 80
Sch. 160 XXS
1/8 27 10.29 8.73 4.76 1.73 24.13 - -
¼ 18 13.72 11.11 7.14 22.35 3.02 - -
3/8 18 17.15 14.68 7.54 23.11 3.20 - -
½ 14 21.34 18.26 9.53 2.77 3.73 4.75 7.47
¾ 14 26.67 23.42 10.32 2.87 3.91 5.54 7.82
1.00 11.50 33.40 25.4 - 3.97 12.70 3.38 4.55 6.35 9.09
1.25 11.50 42.16 25.4 - 12.7 13.89 3.56 4.85 6.35 9.70
1.50 11.50 48.26 25.4 - 18.65 14.29 3.68 5.08 7.14 10.16
2.00 11.50 60.33 50.8 - 5.56 14.68 3.91 5.54 8.71 11.07
2.50 8 73.03 50.8 - 15.88 22.23 5.16 7.01 9.53 14.02
3.00 8 88.90 76.2 - 6.35 23.81 5.49 7.62 11.10 15.24
3.50 8 101.60 76.2 - 19.05 25.40 5.74 8.08 - -
4.00 8 114.30 101.6 - 6.35 25.4 - 1.59 6.02 8.56 13.49 17.12
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