Threadolets Manufacturer, Stockist & Supplier
Product Overview
Sagiant Piping Industries manufactures threadolets (threaded branch outlets) in carbon steel, low-temperature steel, alloy steel, stainless steel, duplex and nickel alloys to MSS SP-97 and ASME B16.11. A threadolet provides an integrally reinforced 90° NPT-threaded branch connection from a run pipe, with a contoured base matched to the run OD, in run sizes 1/2" to 36" and branch 1/8" to 4", with EN 10204 3.1/3.2 certificates, PMI, NDT and IGC testing.
Threadolets — threaded branch outlets, grades and standards
Threadolets in every grade — reinforced threaded branch design, run/branch sizing, standards and mechanical data.
Technical Specification
| Parameter | Specification |
|---|---|
| Type | Threadolet (NPT-threaded branch outlet, self-reinforced) |
| Materials | Carbon, low-temp, alloy, stainless, duplex, nickel |
| Run Size | 1/2" – 36" (NPS) |
| Branch Size | 1/8" – 4" (NPS) |
| Pressure Classes | 3000, 6000 (per B16.11) |
| Testing & Docs | PMI, MPI/DPT, IGC, MTC EN 10204 3.1/3.2, TPI |
Manufacturing Process & Process Notes
Threadolets are closed-die forged with a contoured base profiled to the run-pipe OD (per MSS SP-97) and an NPT-threaded branch bore (per ASME B16.11 / B1.20.1). The base is welded to the run pipe; the branch pipe screws into the thread — ideal for small-bore instrument, drain and vent connections.
Grades & Materials Supplied
| Material Family | Forged Grades (full list) | Applicable Standard | Service / Notes |
|---|---|---|---|
| Carbon steel | A105, A105N | ASME B16.11 / A105 | General forged fittings |
| Carbon steel (low-temp) | A350 LF2, LF3, LF6 | ASME B16.11 / A350 | Low-temperature service |
| Alloy steel (Cr-Mo) | A182 F1, F5, F9, F11, F12, F22, F91, F92 | ASME B16.11 / A182 | High-temperature & creep service |
| Stainless (austenitic) | A182 F304, 304L, 304H, 309, 310, 316, 316L, 316H, 317, 317L, 321, 321H, 347, 347H | ASME B16.11 / A182 | Corrosion & high-temperature service |
| Duplex / super duplex | A182 F51 (2205), F60, F53 (2507), F55, F44, F50 | ASME B16.11 / A182 | Chloride, sour & high-strength service |
| Nickel / Monel | B564 N02200 (Ni 200), N04400 (Monel 400) | ASME B16.11 / B564 | Caustic & marine service |
| Inconel / Incoloy | B564 N06600 (600), N06625 (625), N08800/08810 (Incoloy 800/800H), N08825 (825) | ASME B16.11 / B564 | High-temperature & severe corrosion |
| Hastelloy / Alloy 20 | B564 N10276 (C-276), N06022 (C-22), N08020 (Alloy 20) | ASME B16.11 / B564 | Aggressive acid & chemical service |
Branch Pressure Classes
| Class | Type | Schedule Equivalence | Service |
|---|---|---|---|
| 3000 | Socket-weld & threaded | ≈ Sch 80/160 bore | General process |
| 6000 | Socket-weld & threaded | ≈ Sch 160 bore | High pressure |
Threadolet branch bores follow ASME B16.11 Class 3000/6000; rating depends on material & temperature.
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Branch connection | MSS SP-97 |
| Threads / class | ASME B16.11; B1.20.1 (NPT) |
| Welding | ASME B31.3 |
| Material | ASTM A105, A350, A182, B564 |
| Sour service | NACE MR0175 / ISO 15156 |
Mechanical Properties (representative grades)
| Grade | Tensile (MPa, min) | Yield (MPa, min) | Elong (%, min) | Notes |
|---|---|---|---|---|
| A234 WPB | 415–585 | 240 | 22 | Carbon steel |
| A234 WPC | 485–655 | 275 | 20 | Carbon steel (higher strength) |
| A420 WPL6 | 415–585 | 240 | 22 | Low-temp, charpy at -46°C |
| A234 WP11 Cl.1 | 415–585 | 205 | 22 | 1¼Cr-½Mo alloy |
| A234 WP22 Cl.1 | 415–585 | 205 | 22 | 2¼Cr-1Mo alloy |
| A234 WP91 | 585–760 | 415 | 20 | 9Cr-1Mo-V alloy |
| A403 WP304/304L | 485 / 485 | 205 / 170 | 35 | Austenitic stainless |
| A403 WP316/316L | 485 / 485 | 205 / 170 | 35 | Mo-bearing stainless |
| A815 WPS31803 (2205) | 620 | 450 | 25 | Duplex |
| A815 WPS32750 (2507) | 795 | 550 | 15 | Super duplex |
| B366 WPNCI 625 | 760 | 345 | 30 | Inconel 625 |
| B366 WPHC276 | 690 | 283 | 40 | Hastelloy C-276 |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| PMI | Positive material identification on alloy, stainless & nickel grades |
| NDT | UT, RT, MPI/DPT as specified; 100% visual |
| Mechanical | Tensile, hardness, impact (low-temp), flattening |
| Corrosion (SS/duplex) | IGC per ASTM A262 Practice E; ferrite check (duplex) |
| Certification | EN 10204 3.1 / 3.2 mill test certificate; NACE MR0175 where required |
Applications & Industries Served
Available Forms, Sizes & Range
Supplied in all grades, matched to run and branch sizes. Share run NPS, branch NPS, class and material grade.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Threadolet | Run 1/2"–36", Branch 1/8"–4" | Class 3000/6000 | MSS SP-97 / B16.11 |
| Reducing threadolet | Run 1"–36", Branch 1/8"–2" | Class 3000/6000 | MSS SP-97 |
| Stainless threadolet | Run 1/2"–24", Branch 1/8"–2" | Class 3000/6000 | MSS SP-97 |
| Alloy threadolet | Run 1/2"–24", Branch 1/8"–2" | Class 3000/6000 | MSS SP-97 |
Frequently Asked Questions
What is a threadolet?
A forged branch-outlet fitting with an NPT-threaded branch bore and a contoured base welded to the run pipe — a self-reinforced threaded branch for small-bore connections.
Where are threadolets used?
For small-bore instrument, drain, vent and sampling connections where the branch can be screwed in rather than welded.
What classes are available?
Class 3000 and 6000 per ASME B16.11 for the threaded branch bore.
What grades do you supply?
A105 carbon, A350 low-temp, A182 alloy/stainless/duplex and B564 nickel alloys.
Product Range
The threadolets range can be supplied with related pipes, tubes, butt weld fittings, forged fittings, flanges, fasteners and custom fabricated items where required by the BOQ.
Applications
For dimensional references, see the Pipe Schedule & Fittings Guide. For related supply, review Pipes & Tubes, Butt Weld Fittings, Forged Fittings and Flanges.
Types of Products
| Type | Description |
|---|---|
| Seamless / Welded | Pipes and tubes by manufacturing route |
| Fittings | Elbows, tees, reducers, caps and custom fittings |
| Flanges | Weld neck, slip-on, blind, socket weld and special flanges |
| Fasteners | Stud bolts, nuts, washers and coated fasteners |
Available Forms
Share your BOQ, grades, sizes and quantities for a technical quote with documentation scope.
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Frequently Asked Questions
What materials does Sagiant Piping Industries supply?
Sagiant Piping Industries can supply stainless steel, carbon steel, alloy steel, duplex, super duplex and nickel alloy products subject to project requirement.
Do you provide MTC and test certificates?
MTC, test certificates, heat number traceability and inspection documents can be coordinated based on the material, standard and project scope.
Can Sagiant supply as per project BOQ?
Yes. The team can review BOQs, line lists, drawings and specifications to support pipes, fittings, flanges, fasteners and fabricated items.
Do you support third-party inspection?
Third-party inspection, PMI and dimensional inspection support can be arranged when required by the enquiry or project documentation.
Can you supply both pipes and fittings together?
Yes. Sagiant Piping Industries can support combined RFQs for pipes, fittings, flanges, fasteners and related materials.
Do you manufacture custom fabricated fittings?
Custom fabricated fittings and special items can be supplied as per drawing, BOQ and inspection requirement, subject to feasibility.
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Requirement Submission
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Technical Review
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Material Selection
Align stainless, carbon, alloy, duplex, titanium or nickel alloy grades.
Quotation & Approval
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Production / Sourcing
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Quality Inspection
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Dispatch & Documentation
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