Nascent Fittings Inc.
Long Stubend
ASME B16.9 buttweld elbows, tees, reducers & caps in SS, CS, alloy, duplex & nickel alloys. Sch 10–XXS, MTCs, inspection support and worldwide export supply.

- Size
- 1/2" to 80" NB
- Schedule
- Sch 10/20/40/XS/60/80/100/120/140/160/XXS
- Standard
- ASME B 16.9
About
About Buttweld Fittings
Nascent fittings is a reputed manufacturer and exporter of a wide range of Buttweld fittings which are used in industrial pipe systems to change direction, branching and to mechanically connect equipments to the system including high temperature conditions like furnace.
Manufacturing note
The Stub End, which is essentially a short length of pipe, which has one end that is flared outwards and the other end prepared to be welded to pipe of the same Nominal Pipe Size (NPS), material and of a similar wall thickness. Being a customer focused company Nascent fittings manufacturers and exports long stub ends making them an outstanding solution for a variety of industrial applications. Based on their demand long stub end is presented to various industries in a customised order. Furthermore, our purchase can order this stub end in a variety of arrays including dimensions, types, thickness and length size. Nascent fittings produce these long stub ends in large proportions in order to meet the requirements of reputable clients. Long Stub Ends are the opposite of Short Stub Ends. They have a longer hub length. These stub ends come in different types to administer convenient and conducive joining at pipe
Typical applications
- Industrial piping and process systems using Buttweld Fittings
- Project supply of Buttweld Fittings for oil & gas, power, chemical and general industry
Technical data
Long Stubend specifications
Specifications
CARBON STEEL SPECIFICATIONS:
- Size : 1/2" to 80"NB , ANSI/ASME B 16.9, MSS-SP-43
- Schedule : 10/20/40/80/100/120/160/XXS
- Carbon Steel : ASTM A 234 WPB, IS 1239 PART II
- Carbon Steel : DIN Standard – EN 10253-2 – P235TR2/P265TR2/P235GH/P265GH/P355N/P355NH
- Other Services: Hot Dip Galvanizing, Sand Blasting, Coating – FBE/3LPE/PTFE
ALLOY STEEL, & LTCS SPECIFICATIONS:
- Alloy Steel : ASTM A 234, WP5, WP9, WP11, WP12, WP91
- Low Temp. CS : ASTM A-420 WPL6
- Other Services: Hot Dip Galvanizing, Sand Blasting, Coating – FBE/3LPE/PTFE
STAINLESS STEEL SPECIFICATIONS:
- Size : 1/2" to 80"NB, ANSI/ASME B 16.9, MSS-SP-43
- Schedule : 10/20/40/80/100/120/160/XXS
- Stainless Steel : ASTM A 403 WP – TP 304/304H/304L/316/316H/316L/316Ti/309/310/317L/321/347/904L / XM19
- Stainless Steel : DIN Standard EN 10253-4 / 10222-5 1.4301/1.4307/1.4401/1.4404/1.4529/1.4571/1.4541/1.4410/1.4550/1.4335/1.4539
DUPLEX STEEL & COPPER NICKEL SPECIFICATIONS:
- Size : 1/2" to 48"NB , ANSI/ASME B 16.9, MSS-SP-43
- Schedule :10/20/40/80/100/120/160/XXS
- Duplex Steel : ASTM A815- UNS S31803, S32205, S32750, S32760
- Copper Nickel : C70600(90:10), C71500(70:30), C71640
NICKEL ALLOYS SPECIFICATIONS:
- Size : 1/2" to 48"NB , ANSI/ASME B 16.9, MSS-SP-43
- Schedule :10/20/40/80/100/120/160/XXS
- Nickel : UNS N02200, N02201
- Monel : UNS N04400, N05500, Alloy 20
- Inconel : UNS N06600, N06601, N006625, N08800, N08810, N08825
- Hastelloy : UNS N10276, N06022, N10665, N06455
- SMO 254 Grade UNS S31254
- Aluminum – ASTM / ASME SB361 – 3003 H18 , 3003 H112, 6061 T6, 6063 T6, 6351 T5, 6351 T6
- Titanium – ASTM / ASME SB363 – Gr1, Gr2, Gr5, Gr7, G9, Gr12, Gr23
Materials
Long Stubend by material

Duplex Steel
Duplex Steel Long Stubend
UNS S31803, UNS S32205, UNS S32750, UNS S32760
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Low Temperature Carbon Steel
Low Temperature Carbon Steel Long Stubend
ASTM A420 WPL6
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Cupro Nickel
Cupro Nickel Long Stubend
Cu-Ni 90/10 (C70600), Cu-Ni 70/30 (C71500), C71640
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Nickel Alloy
Nickel Alloy Long Stubend
Nickel 200, Nickel 201, Inconel 600, Inconel 601
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Monel
Monel Long Stubend
Monel 400, Monel K500
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Hastelloy
Hastelloy Long Stubend
Hastelloy C-276, Hastelloy C-22, Hastelloy B-2, Hastelloy C-4 (N06455)
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Aluminium
Aluminium Long Stubend
3003-H18, 3003-H112, 6061, 6063
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Titanium
Titanium Long Stubend
Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 7
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Stainless Steel
Stainless Steel Long Stubend
SMO 254, F304, F304H, F304L
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Alloy Steel
Alloy Steel Long Stubend
F5, F9, F11, WP12 / F12
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Carbon Steel
Carbon Steel Long Stubend
ASTM A234 WPB, P235TR2, P265TR2, P235GH
View details
Copper
Copper Long Stubend
C11000 (ETP), C12200 (DHP)
View details
Copper Alloy
Copper Alloy Long Stubend
UNS C70600 (Cu-Ni 90/10), UNS C71500 (Cu-Ni 70/30), UNS C71640
View detailsConfigurations
Buttweld Fittings types
Open a type for drawings-aligned specifications.
Compliance
Standards & certificates
Specifications and documentation support typically referenced for this product line.
Standards
5- 01ASME B 16.9
- 02MSS-SP-43
- 03MSS-SP-75
- 04MSS-SP-97
- 05MSS-SP-95
Manufacturing
Crafted with care
Workshop and production views for Long Stubend — the same craftsmanship photos from our plant archives, shown in webp.
2 photos


People also ask
Questions about Buttweld Fittings
Nascent Fittings Inc. answers common buyer questions for this line.
Does Nascent Fittings Inc. manufacture Buttweld Fittings?+
Yes. Nascent Fittings Inc. manufactures and supplies Buttweld Fittings for industrial piping projects, with material grades and sizes aligned to project specifications.
Can Nascent Fittings Inc. export Buttweld Fittings worldwide?+
Yes. We export Buttweld Fittings globally with standard export packaging, material test certificates, and documentation support for international shipments.
What materials are available for Buttweld Fittings?+
Buttweld Fittings is available in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, copper alloys, aluminium, titanium and other project-specific materials as required.
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