MSS SP-43 Pipe Fittings | McMaster-Carr

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Pipe Size

Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Pipe Schedule

Fitting Connection

Shape

Pipe Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Elbow Type

Fitting Type

Flange Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Wall Thickness

For Use With

For Flange Class

Length

Connects To

Construction

Threading

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

REACH

RoHS

Pressure Rating

447 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

Also known as Schedule 40 fittings, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.

Straight Reducers

Butt Weld × Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

	Pipe Size				304/304L Stainless Steel		316/316L Stainless Steel
	(A)	(B)	Construction	Pipe Schedule		Each		Each
Butt Weld × Butt Weld



		3/4	1/2	Welded	40	45605K711	000000	45555K711	000000


		1	1/2	Welded	40	45605K111	00000	45555K111	00000
		1	3/4	Welded	40	45605K716	00000	45555K716	00000
		1 1/4	3/4	Welded	40	45605K112	00000	45555K112	00000
		1 1/4	1	Welded	40	45605K726	00000	45555K717	00000
		1 1/2	1/2	Welded	40	45605K113	00000	45555K113	00000
		1 1/2	1	Welded	40	45605K725	00000	45555K725	00000
		1 1/2	1 1/4	Welded	40	45605K114	00000	45555K114	00000
		2	3/4	Welded	40	45605K115	00000	45555K115	00000
		2	1	Welded	40	45605K741	00000	45555K741	00000
		2	1 1/2	Welded	40	45605K745	00000	45555K745	00000


		2 1/2	1	Welded	40	45605K116	000000	45555K116	000000
		2 1/2	1 1/2	Welded	40	45605K746	00000	45555K746	000000
		3	1	Welded	40	45605K117	00000	45555K117	00000
		3	1 1/4	Welded	40	45605K118	00000	45555K118	000000
		3	1 1/2	Welded	40	45605K119	00000	45555K119	00000
		3	2	Welded	40	45605K762	00000	45555K762	00000
		4	1 1/2	Welded	40	45605K121	00000	45555K121	000000
		4	2	Welded	40	45605K122	00000	45555K122	00000
		4	3	Welded	40	45605K783	00000	45555K783	00000
		6	4	Welded	40	45605K786	00000	45555K786	000000


		8	4	Welded	40	45605K123	000000	45555K123	000000
		8	6	Welded	40	45605K532	000000	45555K616	000000

Short 90° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1	Welded	1 5/16"	40	45605K211	000000	45555K211	000000


		1 1/2	Welded	1 29/32"	40	45605K213	00000	45555K213	00000
		2	Welded	2 3/8"	40	45605K214	00000	45555K214	00000
		3	Welded	3 1/2"	40	45605K216	00000	45555K216	000000
		4	Welded	4 1/2"	40	45605K217	000000	45555K217	000000

Long 90° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	40	45605K511	00000	45555K511	000000


		3/4	Welded	1 3/64"	40	45605K512	0000	45555K512	00000
		1	Welded	1 5/16"	40	45605K513	00000	45555K513	00000
		1 1/4	Welded	1 21/32"	40	45605K514	00000	45555K514	00000
		1 1/2	Welded	1 29/32"	40	45605K515	00000	45555K515	00000
		2	Welded	2 3/8"	40	45605K516	00000	45555K516	00000
		2 1/2	Welded	2 7/8"	40	45605K517	00000	45555K517	00000
		3	Welded	3 1/2"	40	45605K521	00000	45555K521	00000
		4	Welded	4 1/2"	40	45605K523	00000	45555K523	000000
		6	Welded	6 5/8"	40	45605K525	000000	45555K525	000000
		8	Welded	8 5/8"	40	45605K526	000000	45555K611	000000

45° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	40	45605K551	000000	45555K551	000000


		3/4	Welded	1 3/64"	40	45605K552	00000	45555K552	00000
		1	Welded	1 5/16"	40	45605K553	00000	45555K553	00000
		1 1/4	Welded	1 21/32"	40	45605K554	00000	45555K554	00000
		1 1/2	Welded	1 29/32"	40	45605K555	00000	45555K555	00000
		2	Welded	2 3/8"	40	45605K556	00000	45555K556	00000
		2 1/2	Welded	2 7/8"	40	45605K557	00000	45555K557	00000
		3	Welded	3 1/2"	40	45605K561	00000	45555K561	00000
		4	Welded	4 1/2"	40	45605K563	00000	45555K563	00000
		6	Welded	6 5/8"	40	45605K565	000000	45555K565	000000
		8	Welded	8 5/8"	40	45605K527	000000	———	0

Tee Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	40	45605K621	000000	45555K621	000000


		3/4	Welded	1 3/64"	40	45605K622	00000	45555K622	00000
		1	Welded	1 5/16"	40	45605K623	00000	45555K623	00000
		1 1/4	Welded	1 21/32"	40	45605K624	00000	45555K624	00000
		1 1/2	Welded	1 29/32"	40	45605K625	00000	45555K625	00000
		2	Welded	2 3/8"	40	45605K626	00000	45555K626	00000
		2 1/2	Welded	2 7/8"	40	45605K627	00000	45555K627	000000
		3	Welded	3 1/2"	40	45605K631	00000	45555K631	00000
		4	Welded	4 1/2"	40	45605K633	00000	45555K633	000000
		6	Welded	6 5/8"	40	45605K635	000000	45555K635	000000
		8	Welded	8 5/8"	40	45605K528	000000	———	0

Caps

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	40	45605K581	000000	45555K581	000000


		3/4	Welded	1 3/64"	40	45605K582	00000	45555K582	00000
		1	Welded	1 5/16"	40	45605K583	00000	45555K583	00000
		1 1/4	Welded	1 21/32"	40	45605K584	00000	45555K584	00000
		1 1/2	Welded	1 29/32"	40	45605K585	00000	45555K585	00000
		2	Welded	2 3/8"	40	45605K586	00000	45555K586	00000
		2 1/2	Welded	2 7/8"	40	45605K587	00000	45555K587	00000
		3	Welded	3 1/2"	40	45605K591	00000	45555K591	00000
		4	Welded	4 1/2"	40	45605K593	00000	45555K593	00000
		6	Welded	6 5/8"	40	45605K595	00000	45555K595	000000
		8	Welded	8 5/8"	40	45605K529	000000	45555K614	000000

Stub-End Straight Adapters

Straight Adapter

Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.

					304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thk.	Flange OD	Construction	Pipe Schedule		Each		Each
1/2	0.109"	1 3/8"	Welded	40	45605K651	000000	45555K651	000000
3/4	0.113"	1 11/16"	Welded	40	45605K652	00000	45555K652	00000
1	0.133"	2"	Welded	40	45605K653	00000	45555K653	00000
1 1/4	0.14"	2 1/2"	Welded	40	45605K654	00000	45555K654	00000
1 1/2	0.145"	2 7/8"	Welded	40	45605K655	00000	45555K655	00000
2	0.154"	3 5/8"	Welded	40	45605K656	00000	45555K656	00000
2 1/2	0.203"	4 1/8"	Welded	40	45605K657	00000	45555K657	00000
3	0.216"	5"	Welded	40	45605K661	00000	45555K661	00000
4	0.237"	6 3/16"	Welded	40	45605K663	00000	45555K663	00000
6	0.28"	8 1/2"	Welded	40	45605K665	000000	45555K665	000000
8	0.322"	10 5/8"	Welded	40	45605K531	000000	45555K615	000000

Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.

Straight Reducers

Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings, Straight Reducers, Butt Weld × Butt Weld.

Butt Weld × Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size				304/304L Stainless Steel		316/316L Stainless Steel
	(A)	(B)	Construction	Pipe Schedule		Each		Each
Butt Weld × Butt Weld



		3/4	1/2	Welded	10	45735K411	000000	43645K511	000000


		1	1/2	Welded	10	45735K117	00000	43645K134	00000
		1	3/4	Welded	10	45735K413	00000	43645K513	00000
		1 1/4	3/4	Welded	10	———	0	43645K156	00000
		1 1/4	1	Welded	10	45735K414	00000	———	0
		1 1/2	1	Welded	10	45735K418	00000	43645K518	00000
		1 1/2	1 1/4	Welded	10	45735K118	00000	43645K135	00000
		2	1/2	Welded	10	45735K119	00000	43645K136	000000
		2	3/4	Welded	10	45735K121	00000	43645K137	00000
		2	1	Welded	10	45735K423	00000	43645K523	00000
		2	1 1/4	Welded	10	45735K122	00000	43645K138	00000


		2	1 1/2	Welded	10	45735K425	00000	43645K525	00000
		2 1/2	1	Welded	10	45735K123	000000	43645K139	000000
		2 1/2	1 1/2	Welded	10	45735K424	00000	43645K157	000000
		2 1/2	2	Welded	10	45735K124	00000	43645K141	00000
		3	1 1/4	Welded	10	45735K125	000000	43645K142	000000
		3	2	Welded	10	45735K432	00000	43645K532	00000
		4	1 1/2	Welded	10	45735K126	00000	43645K143	00000
		4	3	Welded	10	45735K437	00000	43645K537	00000
		6	2	Welded	10	45735K127	000000	43645K144	000000
		6	4	Welded	10	45735K438	00000	43645K158	00000


		8	4	Welded	10	45735K128	000000	43645K145	000000
		8	6	Welded	10	45735K129	000000	43645K146	000000
		10	6	Welded	10	45735K624	000000	43645K473	000000
		10	8	Welded	10	45735K625	000000	43645K474	000000
		12	6	Welded	10	45735K626	000000	———	0
		12	8	Welded	10	45735K627	000000	———	0
		12	10	Welded	10	45735K628	000000	———	0

Offset Straight Reducers

Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Stainless Steel Butt-Weld Pipe Fittings, Offset Straight Reducers, Butt Weld × Butt Weld.

Butt Weld × Butt Weld

Offset straight reducers are also known as eccentric reducers; they connect one pipe to another smaller-diameter pipe and have the centers offset so your line can drain.

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size				304/304L Stainless Steel		316/316L Stainless Steel
	(A)	(B)	Construction	Pipe Schedule		Each		Each
Butt Weld × Butt Weld



		1	1/2	Welded	10	45735K629	000000	43645K488	000000


		1	3/4	Welded	10	45735K631	00000	43645K489	00000
		1 1/2	1	Welded	10	45735K632	00000	43645K491	00000
		2	1	Welded	10	45735K633	000000	43645K492	000000
		2	1 1/2	Welded	10	45735K634	00000	43645K493	00000
		2 1/2	2	Welded	10	45735K635	000000	43645K494	000000
		3	1 1/2	Welded	10	45735K636	000000	43645K495	000000
		3	2	Welded	10	45735K637	000000	43645K496	000000
		3	2 1/2	Welded	10	45735K638	000000	43645K497	000000
		4	2	Welded	10	45735K639	000000	43645K498	000000
		4	2 1/2	Welded	10	45735K641	000000	43645K499	000000


		4	3	Welded	10	45735K642	00000	43645K611	000000
		6	4	Welded	10	45735K643	000000	43645K612	000000

Short 90° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1	Welded	1 5/16"	10	45735K321	000000	43645K124	000000


		1 1/4	Welded	1 21/32"	10	45735K131	00000	43645K125	00000
		1 1/2	Welded	1 29/32"	10	45735K323	00000	43645K126	000000
		2	Welded	2 3/8"	10	45735K324	00000	43645K127	000000
		2 1/2	Welded	2 7/8"	10	45735K132	000000	43645K128	000000
		3	Welded	3 1/2"	10	45735K326	00000	43645K129	000000
		4	Welded	4 1/2"	10	45735K327	000000	43645K131	000000
		6	Welded	6 5/8"	10	45735K328	000000	43645K132	000000
		8	Welded	8 5/8"	10	45735K114	000000	43645K133	000000
		10	Welded	10 3/4"	10	45735K613	000000	43645K423	00000000
		12	Welded	12 3/4"	10	45735K614	00000000	43645K424	00000000

Long 90° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	10	45735K211	00000	43645K311	000000


		3/4	Welded	1 3/64"	10	45735K214	00000	43645K312	00000
		1	Welded	1 5/16"	10	45735K213	00000	43645K313	00000
		1 1/4	Welded	1 21/32"	10	45735K217	00000	43645K111	00000
		1 1/2	Welded	1 29/32"	10	45735K215	00000	43645K315	00000
		2	Welded	2 3/8"	10	45735K216	00000	43645K316	00000
		2 1/2	Welded	2 7/8"	10	45735K221	00000	43645K112	00000
		3	Welded	3 1/2"	10	45735K218	00000	43645K318	00000
		4	Welded	4 1/2"	10	45735K219	00000	43645K319	00000
		6	Welded	6 5/8"	10	45735K222	000000	43645K113	000000
		8	Welded	8 5/8"	10	45735K111	000000	43645K114	000000


		10	Welded	10 3/4"	10	45735K611	000000	43645K411	000000
		12	Welded	12 3/4"	10	45735K612	000000	43645K412	000000

45° Elbow Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	10	45735K231	000000	43645K331	000000


		3/4	Welded	1 3/64"	10	45735K232	00000	43645K332	00000
		1	Welded	1 5/16"	10	45735K233	00000	43645K333	00000
		1 1/4	Welded	1 21/32"	10	45735K237	00000	43645K115	00000
		1 1/2	Welded	1 29/32"	10	45735K235	00000	43645K335	00000
		2	Welded	2 3/8"	10	45735K236	00000	43645K336	00000
		2 1/2	Welded	2 7/8"	10	45735K241	00000	43645K116	00000
		3	Welded	3 1/2"	10	45735K238	00000	43645K338	00000
		4	Welded	4 1/2"	10	45735K239	00000	43645K339	00000
		6	Welded	6 5/8"	10	45735K242	00000	43645K117	000000
		8	Welded	8 5/8"	10	45735K112	000000	43645K118	000000


		10	Welded	10 3/4"	10	45735K615	000000	43645K435	000000
		12	Welded	12 3/4"	10	45735K616	000000	43645K436	000000

Tee Connectors

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	10	45735K251	000000	43645K351	000000


		3/4	Welded	1 3/64"	10	45735K252	00000	43645K352	00000
		1	Welded	1 5/16"	10	45735K253	00000	43645K353	00000
		1 1/4	Welded	1 21/32"	10	45735K257	00000	43645K119	00000
		1 1/2	Welded	1 29/32"	10	45735K255	00000	43645K355	00000
		2	Welded	2 3/8"	10	45735K256	00000	43645K356	00000
		2 1/2	Welded	2 7/8"	10	45735K261	000000	43645K121	000000
		3	Welded	3 1/2"	10	45735K258	00000	43645K358	00000
		4	Welded	4 1/2"	10	45735K259	00000	43645K359	000000
		6	Welded	6 5/8"	10	45735K262	000000	43645K122	000000
		8	Welded	8 5/8"	10	45735K113	000000	43645K123	000000


		10	Welded	10 3/4"	10	45735K617	000000	43645K447	00000000
		12	Welded	12 3/4"	10	45735K618	00000000	43645K448	00000000

Inline Tee Reducers

Butt Weld

Inline tees are also known as branch tees.

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size					304/304L Stainless Steel		316/316L Stainless Steel
	(A)	(B)	(C)	Construction	Pipe Schedule		Each		Each
Butt Weld × Butt Weld × Butt Weld



		1	1/2	1	Welded	10	45735K644	000000	43645K623	000000


		1	3/4	1	Welded	10	45735K645	00000	43645K624	00000
		1 1/2	3/4	1 1/2	Welded	10	45735K646	000000	43645K625	000000
		1 1/2	1	1 1/2	Welded	10	45735K647	00000	43645K626	00000
		2	1	2	Welded	10	45735K648	00000	43645K627	00000
		2	1 1/2	2	Welded	10	45735K649	00000	43645K628	00000
		2 1/2	1 1/2	2 1/2	Welded	10	45735K651	000000	43645K629	000000
		2 1/2	2	2 1/2	Welded	10	45735K652	000000	43645K631	000000
		3	1 1/2	3	Welded	10	45735K653	000000	43645K632	000000
		3	2	3	Welded	10	45735K654	000000	43645K633	000000
		3	2 1/2	3	Welded	10	45735K655	000000	43645K634	000000


		4	2	4	Welded	10	45735K656	000000	43645K635	000000
		4	2 1/2	4	Welded	10	45735K657	000000	43645K636	000000
		4	3	4	Welded	10	45735K658	000000	43645K637	000000
		6	4	6	Welded	10	45735K659	000000	43645K638	000000

Caps

Butt Weld

304/304L Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304/304L Stainless Steel		316/316L Stainless Steel
	Pipe Size	Construction	OD	Pipe Schedule		Each		Each
Butt Weld



		1/2	Welded	27/32"	10	45735K271	000000	43645K371	000000


		3/4	Welded	1 3/64"	10	45735K272	00000	43645K372	00000
		1	Welded	1 5/16"	10	45735K273	00000	43645K373	00000
		1 1/4	Welded	1 21/32"	10	45735K277	00000	43645K147	00000
		1 1/2	Welded	1 29/32"	10	45735K275	00000	43645K375	00000
		2	Welded	2 3/8"	10	45735K276	00000	43645K376	00000
		2 1/2	Welded	2 7/8"	10	45735K281	00000	43645K148	00000
		3	Welded	3 1/2"	10	45735K278	00000	43645K378	00000
		4	Welded	4 1/2"	10	45735K279	00000	43645K379	00000
		6	Welded	6 5/8"	10	45735K282	00000	43645K149	00000
		8	Welded	8 5/8"	10	45735K115	000000	43645K151	000000


		10	Welded	10 3/4"	10	45735K619	000000	43645K458	000000
		12	Welded	12 3/4"	10	45735K621	000000	43645K459	000000

Stub-End Straight Adapters

Straight Adapter

					304/304L Stainless Steel		316/316L Stainless Steel
Pipe Size	Wall Thk.	Flange OD	Construction	Pipe Schedule		Each		Each
1/2	0.083"	1 3/8"	Welded	10	45735K291	000000	43645K391	000000
3/4	0.083"	1 11/16"	Welded	10	45735K292	00000	43645K392	00000
1	0.109"	2"	Welded	10	45735K293	00000	43645K393	00000
1 1/4	0.109"	2 1/2"	Welded	10	45735K297	00000	43645K152	00000
1 1/2	0.109"	2 7/8"	Welded	10	45735K295	00000	43645K395	00000
2	0.109"	3 5/8"	Welded	10	45735K296	00000	43645K396	00000
2 1/2	0.12"	4 1/8"	Welded	10	45735K311	00000	43645K153	00000
3	0.12"	5"	Welded	10	45735K298	00000	43645K398	00000
4	0.12"	6 3/16"	Welded	10	45735K299	00000	43645K399	00000
6	0.134"	8 1/2"	Welded	10	45735K312	000000	43645K154	000000
8	0.148"	10 5/8"	Welded	10	45735K116	000000	43645K155	000000
10	0.134"	12 3/4"	Welded	10	45735K622	000000	———	0
12	—	15"	Welded	10	———	0	43645K462	000000
12	0.156"	15"	Welded	10	45735K623	000000	———	0

Standard-Wall Butt-Weld Stainless Steel Unthreaded Pipe Stub Ends


Straight Pipe Stub End with Pipe Flange	Straight Adapter

Also known as Schedule 40 pipe stub ends, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld pipe stub ends. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.

Pipe stub ends are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.

304/304L Stainless Steel—304/304L stainless steel pipe stub ends have very good corrosion resistance.

316/316L Stainless Steel—316/316L stainless steel pipe stub ends have excellent corrosion resistance.

	Pipe Stub Ends												Flanges
							For Pipe		For Flange
	Pipe Size	Wall Thk.	Flange OD	Construction	For Use With	Specs. Met	Schedule	Material	Class	Material		Each		Each
Straight Pipe Stub Ends, Butt Weld × Flanged







				304/304L Stainless Steel

				1/2	0.109"	1 3/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K651	000000	44685K311	000000


				3/4	0.113"	1 11/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K652	00000	44685K312	00000
				1	0.133"	2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K653	00000	44685K313	00000
				1 1/4	0.14"	2 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K654	00000	44685K314	00000
				1 1/2	0.145"	2 7/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K655	00000	44685K315	00000
				2	0.154"	3 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K656	00000	44685K316	00000
				2 1/2	0.203"	4 1/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K657	00000	44685K317	000000
				3	0.216"	5"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K661	00000	44685K318	000000
				4	0.237"	6 3/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K663	00000	44685K319	000000
				6	0.28"	8 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K665	000000	44685K161	000000
				8	0.322"	10 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45605K531	000000	44685K176	000000




						316/316L Stainless Steel

						1/2	0.109"	1 3/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K651	00000	44695K212	00000


						3/4	0.113"	1 11/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K652	00000	44695K213	00000
						1	0.133"	2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K653	00000	44695K214	00000
						1 1/4	0.14"	2 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K654	00000	44695K215	00000
						1 1/2	0.145"	2 7/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K655	00000	44695K216	00000
						2	0.154"	3 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K656	00000	44695K217	00000
						2 1/2	0.203"	4 1/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K657	00000	44695K218	000000
						3	0.216"	5"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K661	00000	44695K219	000000
						4	0.237"	6 3/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K663	00000	44695K221	000000
						6	0.28"	8 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K665	000000	44695K151	000000
						8	0.322"	10 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	40	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	45555K615	000000	44695K166	000000

Thin-Wall Butt-Weld Stainless Steel Unthreaded Pipe Stub Ends


Straight Pipe Stub End with Pipe Flange	Straight Adapter

Also known as Schedule 10 pipe stub ends, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.

304/304L Stainless Steel—304/304L stainless steel pipe stub ends have very good corrosion resistance.

316/316L Stainless Steel—316/316L stainless steel pipe stub ends have excellent corrosion resistance.

	Pipe Stub Ends												Flanges
							For Pipe		For Flange
	Pipe Size	Wall Thk.	Flange OD	Construction	For Use With	Specs. Met	Schedule	Material	Class	Material		Each		Each
Straight Pipe Stub Ends, Butt Weld × Flanged







				304/304L Stainless Steel

				1/2	0.083"	1 3/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K291	000000	44685K311	000000


				3/4	0.083"	1 11/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K292	00000	44685K312	00000
				1	0.109"	2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K293	00000	44685K313	00000
				1 1/4	0.109"	2 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K297	00000	44685K314	00000
				1 1/2	0.109"	2 7/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K295	00000	44685K315	00000
				2	0.109"	3 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K296	00000	44685K316	00000
				2 1/2	0.12"	4 1/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K311	00000	44685K317	000000
				3	0.12"	5"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K298	00000	44685K318	000000
				4	0.12"	6 3/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K299	00000	44685K319	000000
				6	0.134"	8 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K312	000000	44685K161	000000
				8	0.148"	10 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K116	000000	44685K176	000000


				10	0.134"	12 3/4"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K622	000000	44685K326	000000
				12	0.156"	15"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	304 Stainless Steel, 304/304L Stainless Steel	150	304 Stainless Steel, 304/304L Stainless Steel	45735K623	000000	44685K327	000000




						316/316L Stainless Steel

						1/2	0.083"	1 3/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K391	00000	44695K212	00000


						3/4	0.083"	1 11/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K392	00000	44695K213	00000
						1	0.109"	2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K393	00000	44695K214	00000
						1 1/4	0.109"	2 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K152	00000	44695K215	00000
						1 1/2	0.109"	2 7/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K395	00000	44695K216	00000
						2	0.109"	3 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K396	00000	44695K217	00000
						2 1/2	0.12"	4 1/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K153	00000	44695K218	000000
						3	0.12"	5"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K398	00000	44695K219	000000
						4	0.12"	6 3/16"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K399	00000	44695K221	000000
						6	0.134"	8 1/2"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K154	000000	44695K151	000000
						8	0.148"	10 5/8"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K155	000000	44695K166	000000


						12	0.18"	15"	Welded	Air, Natural Gas, Oil, Water	ASME B16.9, ASTM A403, MSS SP-43	10	316 Stainless Steel, 316/316L Stainless Steel	150	316 Stainless Steel, 316/316L Stainless Steel	43645K462	000000	44695K256	000000