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Thai Malleable Iron and Steel Co.,Ltd. The High Grade Malleable Cast Iron Pipe Fittings .........

High Grade Iron Pipe Fittings

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H = 0.960237 p Taper Threads Taper 1 in 16 on dia.

h = 0.640327 p (Shown exaggerated in diagram)

r = 0.137278 p H = 0.960491 p

Taper Threads h = 0.640327 p

r = 0.137329 p

Parallel Threads

(Unit : Inch)

Nominal Bore of Pipe (inch)	Approximate Outside Diameter of Black Pipe	Number of Thread Per Inch	Pitch	Depth of Thread	Diameter Gauge Plane (gauge diameter)	Distance of Gauge Diameter from End (gauge length)	Length of Useful Thread
Nominal Bore of Pipe (inch)			P	h	B	F	E
1/8	0.400	28	0.03571	0.0229	0.383	0.1563	0.2545
1/4	0.538	19	0.05263	0.0337	0.518	0.2367	0.3814
3/8	0.676	19	0.05263	0.0337	0.656	0.2500	0.3947
1/2	0.847	14	0.07143	0.0457	0.825	0.3214	0.5178
3/4	1.063	14	0.07143	0.0457	1.041	0.3750	0.5714
1	1.336	11	0.09091	0.0582	1.309	0.4091	0.6591
1¼	1.677	11	0.09091	0.0582	1.650	0.5000	0.7500
1½	1.909	11	0.09091	0.0582	1.882	0.5000	0.7500
2	2.381	11	0.09091	0.0582	2.347	0.6250	0.9204
2½	2.996	11	0.09091	0.0582	2.960	0.6875	1.0511
3	3.499	11	0.09091	0.0582	3.460	0.8125	1.1761
3½	3.991	11	0.09091	0.0582	3.950	0.8750	1.2386
4	4.494	11	0.09091	0.0582	4.450	1.0000	1.4091
5	5.498	11	0.09091	0.0582	5.450	1.1250	1.5795
6	6.501	11	0.09091	0.0582	6.450	1.1250	1.5795

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Tmis - High Grade Pipe Fittings


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