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Class 3000 Threaded Fittings

Views: 45 Author: Site Editor Publish Time: 2022-07-05 Origin: Site

Threaded pipe fittings is one type of forged steel fittings which available in pressure rating of Class 2000, Class 3000 and Class 6000.

While 3000 lbs is the most common used among these ratings. It aslo can be marked as 3M where M means 1000.

There are many types can be provided as class 3000 pipe fittings, such as elbows (90 deg / 45 deg), tees, crosses, couplings (full/half), caps, unions, bushing, nipple. These fittings can be manufactured from carbon steel A105, SS A182 F304 / F316, nickel alloys and duplex stainless steel.The diameter range is 1/8" to 4".

Threaded Pipe Fittings VS Butt Welding Fittings

Butt welding is the most common type of connection and life is stronger than threaded. It also has large size range. But threaded is more convenient and can be used in some chemical environments that butt welding can't.

CLASS VS THICKNESS SCHEDULE

Different Types of Thread Connection

No	Type of Fittings	Connection
1	Full Coupling	Female x Female
2	90DEG/45DEG Elbow	Female x Female
3	3 Way Tee	Female x Female x Female
4	3 Piece Union	Female x Female
5	End Cap	Female
6	90DEG/45DEG Reducing Elbow	Female x Male
7	Hex Plug	Male
8	Hex Nipple	Male x Male
9	Hex Bushing	Female x Male
10	Half Coupling	Female

Class 3000 VS Class 6000

Description	3000 PSI (3M)	6000 PSI (6M)
Body Size	Smaller	Bigger
Thickness	Thinner	Thicker
Unit Weight	Lighter	Heavier
Working Pressure	Lower	Higher

Tolerance for Threaded Pipe Fittings

British Standard Threads (BSPT)

NOMINAL BORE OF PIPE		APPROX. OUTSIDE DIAMETER	NUMBER OF THREADS PER INCH	PITCH	DEPTH OF THREADS	DIAMETER AT GAUGE PLANE	LENGTH OF USEFUL THREAD
IMPERIAL	METRIC	A		P	h	B	E
1/8	6	10.16	28	0.907	0.581	9.72	6.5
1/4	8	13.66	19	1.337	0.856	13.15	9.7
3/8	10	17.17	19	1.337	0.856	16.66	10.1
1/2	15	21.51	14	1.814	1.162	20.95	13.2
3/4	20	27.00	14	2.309	1.162	26.44	14.5
1	25	33.93	11	2.309	1.479	33.24	16.8
1 1/4	32	42.59	11	2.309	1.479	41.91	19.1
1 1/2	40	48.48	11	2.309	1.479	47.80	19.1
2	50	60.47	11	2.309	1.479	59.61	23.4
2 1/2	65	76.09	11	2.309	1.479	75.18	26.7
3	80	88.87	11	2.309	1.479	87.88	29.8
4	100	114.14	11	2.309	1.479	113.03	35.8
5	125	139.65	11	2.309	1.479	138.43	40.1
6	150	165.12	11	2.309	1.479	163.83	40.1

American National Standard Taper Pipe Threads (NPT)

Nominal pipe	Outside Dia.Of Pipe	Threads per Inch	Pitch of Thread	Pitch Diameter at Begainning of Extranal Thread	Handtight Engagement		Effective Thread,External
					Length,aL1	Dia,bE1	Length,cL2	Dia,E2
Size	D	N	P	E0	Inch		inch
1/16	0.3125	27	0.03704	0.27118	0.160	0.28118	0.2611	0.28750
1/8	0.405	27	0.03704	0.36351	0.1615	0.37360	0.2639	0.38000
1/4	0.540	18	0.05556	0.47739	0.2278	0.49163	0.4018	0.50250
3/8	0.675	18	0.05556	0.61201	0.240	0.62701	0.4078	0.63750
1/2	0.840	14	0.07143	0.75843	0.320	0.77843	0.5337	0.79179
3/4	1.050	14	0.07143	0.96768	0.339	0.98887	0.5457	1.00179
1	1.315	11.5	0.08696	1.21363	0.400	1.23863	0.6828	1.25630
1 1/4	1.660	11.5	0.08696	1.55713	0.420	1.58338	0.7068	1.60130
1 1/2	1.900	11.5	0.08696	1.79609	0.420	1.82234	0.7235	1.84130
2	2.375	11.5	0.08696	2.26902	0.436	2.29627	0.7565	2.31630
2 1/2	2.875	8	0.12500	2.71953	0.682	2.76216	1.1375	2.79062
3	3.500	8	0.12500	3.34062	0.766	3.38850	1.2000	3.41562
3 1/2	4.000	8	0.12500	3.83750	0.821	3.88881	1.2500	3.91562
4	4.500	8	0.12500	4.33438	0.844	4.38712	1.3600	4.41562
5	5.563	8	0.12500	5.39073	0.937	5.44929	1.4063	5.47862
6	6.625	8	0.12500	6.44609	0.958	6.50597	1.5125	6.54062

Application

Paper Industry
Power Industry
Cement Industry
Pipeline Industry
Chemical Industry
Oil and Gas Industry
Equipments Industry
Ship Building Industry
Food Processing Industry

Class 3000 Threaded Fittings

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