NPT Nipple Fitting

~~USD6~~ USD5

NPT Nipple 1" Sch80 TBE 100mm Long SS316

SKU: SH163 Category: Steel Pipe Nipples

General Details
Technical Info
Specification
Documents
Related Products

General Details

Nipple fitting is a short piece of pipe which provided NPT or BSP male thread at each end, the length usually specified by the overall length with thread.

We do not recommend that disassembling and then reassembling the same threaded fittings. Becuase you have formed the threads to specific connection after you set an NPT fitting connection. Otherwise that may create leaks.

NPT pipe fittings are offered in various grades including stainless steel pipe fittings, brass fittings, copper fittings, carbon steel, nickel alloys, Cu/Ni, alloy steel.

What is NPT?

NPT is short of American National Standard Pipe Thread standards, which is used on threaded pipes and pipe fittings. They include both tapered and straight thread series for various purposes including rigidity, pressure-tight sealing, or both.

Connection of NPT Nipple Fitting

According to the shapes, we can divided into straight nipple (threaded nipple) and reducing nipple. Same as the steel pipe reducer, there are concentric swage nipple and eccentric swage nipple. All of them have some connecting methods as following:

TOE Nipple

TOE NIPPLE

Threaded one end nipple, and the other end is plain which can connect with the pipes or fittings by welding.

NPT TBE Nipple

TBE Nipple

It means pipe nipple have BSP or NPT threads on both ends, and connects pipe and fittings by screwed.

TSE Nipple Fitting

TSE NIPPLE

Threaded small end nipple offer called TSE Nipple for short. From full name, we can know the small dimaeter end is NPT Thread.

TLE Threaded Nipple

TLE NIPPLE

In contrast to TSE Nipple, the thread is on the large diameter end.

Threaded Nipple Fitting Weight Chart

The threaded nipple weight is based on the thickness, we can specify them as Schedule 80 or 160.

Threaded Nipple Weight

Specification for Steel Pipe Nipple

Standard: MSS SP-95 / BS3799

Threaded ends per ASME B1.20.1

Beveled ends per ASME B16.25

Material: Carbon Steels, Stainless Steels, Alloy Steels.

Sizes: 1/4″- 8″ in S40/STD, S80/XS, S160 & XXS. Also available in special pipe schedules.

Technical Info

316 Stainless Steel Properties

Chemical Composition

GRADE		C	MN	SI	P	S	CR	MO	NI	N
316	Min	–	–	–	0	–	16	2	10	–
316	Max	0.08	2	0.75	0.045	0.03	18	3	14	0.1
316L	Min	–	–	–	–	–	16	2	10	–
316L	Max	0.03	2	0.75	0.045	0.03	18	3	14	0.1
316H	Min	0.04	0.04	0	–	–	16	2	10	–
316H	max	0.1	0.1	0.75	0.045	0.03	18	3	14	–

Mechanical Properties

GRADE	TENSILE STRENGTH	YIELD STRENGTH	ELONGATION	HARDNESS
GRADE	(MPA) MIN	(MPA) MIN	(% IN 50MM) MIN	(HR B) MAX	(HB) MAX
316	515	205	40	95	217
316L	485	170	40	95	217
316H	515	205	40	95	217

Specification

Drawing & Specification for Threaded Pipe Nipple

Threaded Pipe Nipple Drawing

The length indicated in the above table are the generally referenced ones. Manufacturer shall conform to the ones specified in the purchase specification. If not specified, manufacturer can select one of the above three series.
Thread shall be machined per ASME B1.20.1

Nominal Size		OD of Pipes	Lengths of Thread	Wall of pipes	Pipe Nipple Lengths
DN	NPS	OD	L	T	L
DN	NPS	OD	L	T	I	II	III
6	1/8	10.3	6.7	STD,XS Sch40,Sch80	50	75	100
8	1/4	13.7	10.2
10	3/8	17.1	10.4
15	1/2	21.3	13.6	STD,XS Sch40,Sch80	50	75	100
20	3/4	26.7	13.9
25	1	33.4	17.3
32	1 1/4	42.2	18	STD,XS Sch40,Sch80	75	100	150
40	1 1/2	48.3	18.4
50	2	60.3	19.2
65	2 1/2	73	28.9	STD,XS Sch40,Sch80	100	150	200
80	3	88.9	30.5
90	3 1/2	101.6	31.8
100	4	114.3	33	STD,XS Sch40,Sch80	100	150	200
125	5	141.3	35.7
150	6	168.3	38.4
200	8	219.1	43.5	STD,XS Sch40,Sch80	150	200	250
250	10	273	48.9
300	12	323.8	54