Forged Threaded Fittings Boss
Table of Content
- Forged Threaded Fitting Boss Specification
- Manufacturing Standards of Threaded Boss
- ASME / ANSI B16.11 Threaded Boss Material & Grades
- Dimensions of ASME B16.11 Threaded Boss
- Forged Threaded Boss Types by Size, Class, and Wall Thickness
- Angularity Tolerance of Forged Threaded Boss
- Applications of ASME B16.11 Threaded Boss
Kaizen Steel Industries is a leading supplier and exporter of ASME B16.11 Threaded Bosses. Our products come in various forms and sizes, including elbows, tees, crosses, bosses, unions, and more.
Our Threaded Fittings meet the ASME B16.11 standards, which define the dimensions and tolerances for these fittings. We also produce light-weight, corrosion-resistant fittings that adhere to MSS SP43 specifications.
The ASME B16.11 standard covers:
- Pressure-Temperature Ratings: Ensures the fittings can handle specific pressures and temperatures.
- Dimensions and Tolerances: Specifies the sizes and allowable deviations.
- Marking and Material Requirements: Details the necessary markings and materials for forged carbon and alloy steel fittings.
Our fittings are made from materials like forgings, bars, seamless pipe, and tubes that meet the chemical composition and mechanical property requirements of ASTM A105, A182, or A350. The ASME B16.11 standard also includes guidelines for pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and designating openings for fittings.
A Threaded Boss is used to connect two fluid-carrying pipes, tubing, or hoses. It features a male threaded section that fits into a female threaded section to create a mechanical seal. The unique feature of this system is an extra nut that tightens over the threaded boss, forming a fluid-tight seal.
This technique is commonly used in hydraulics but is also applicable in gas and vacuum systems. ASME B16.11 Forged Threaded Boss connectors should not be mixed with other types of connectors, as this can lead to leaks. In high-pressure fluid systems, it is crucial to use this system properly to avoid dangerous leaks and potential damage.
Forged Threaded Fitting Boss Specification
| Standard | ANSI/ASME :ASTM A182, ASTM SA182 |
| Dimension | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| Size | 1/8″ NB TO 4″ NB |
| Class | 2000LBS, 3000LBS, 6000LBS |
| Type | Threaded Fitting Boss |
Manufacturing Standards of Threaded Boss
| ASME B16.11 | Threadeding Forged Fittings. |
|---|---|
| MSS SP-43 | Wrought and Fabricated Threaded Fittings for Low Pressure, Corrosion Resistant Applications. |
| MSS SP-95 | Swage(d) Nipples and Bull Plugs. |
| BS3799 | Specification for Steel pipe fittings, screwed Threaded for the petroleum industry. |
| ASTM A182 – ASME SA182 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings. |
ASME / ANSI B16.11 Threaded Boss Material & Grades
| Stainless Steel Threaded Boss | ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L |
| Carbon Steel Threaded Boss | ASTM A105, A350 LF2, A106 Gr.B, A234 WPB |
| Alloy Steel Threaded Boss | ASTM / ASME A182, ASTM / ASME A335 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91 |
| Duplex Steel Threaded Boss | ASTM/ASME A182 / SA182, A790 / SA790 UNS No S31803, S32205 |
| Super Duplex Threaded Boss | ASTM/ASME A182 / SA182, A790 / SA790 UNS No S32750, S32950 |
| Nickel Alloy Threaded Boss | ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Copper Nickel (Cupro-Nickel 90/10 & 70/30). |
| Low Temperature Carbon Steel Threaded Boss | ASTM/ASME A420 SA/420 WPL3, WPL6 |
Dimensions of ASME B16.11 Threaded Boss
| DN | Nom. Pipe Size | D | W | L2 (Min) | |||
| 3000lb | 6000lb | 3000lb | 6000lb | 3000lb | 6000lb | ||
| 6 | 1/8″ | 16.0 | 22.0 | 38.0 | 6.70 | ||
| 8 | 19.0 | 26.0 | 41.0 | 10.21 | |||
| 10 | 3/8″ | 22.0 | 32.0 | 45.0 | 10.36 | ||
| 15 | 1/2″ | 29.0 | 38.0 | 51.0 | 13.56 | ||
| 20 | 3/4″ | 35.0 | 45.0 | 51.0 | 13.86 | ||
| 25 | 1″ | 45.0 | 60.0 | 51.0 | 17.34 | ||
| 40 | 1-1/2″ | 64.0 | 76.0 | 51.0 | 18.38 | ||
| 50 | 2″ | 76.0 | 95.0 | 51.0 | 19.22 | ||
| 65 | 2-1/2″ | 95.0 | 51.0 | 28.89 | |||
| 80 | 3″ | 110.0 | 57.0 | 30.48 | |||
| 100 | 4″ | 140.0 | 64.0 | 33.02 | |||
Forged Threaded Boss Types by Size, Class, and Wall Thickness
| Description | Class Designation | ||
|---|---|---|---|
| 2000 | 3000 | 6000 | |
| Threaded Boss | 1/2 – 4 | 1/2 – 2 | 1/2 – 2 |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| Pipe Wall | SCH 80 / XS | SCH 160 | XXS |
Angularity Tolerance of Forged Threaded Boss
| ND | Max off angle | Max off plane |
|---|---|---|
| Q | P | |
| 1/2 a 4 | 1 | 2 |
| 5 a 8 | 2 | 4 |
| 10 a 12 | 3 | 5 |
| 14 a 16 | 3 | 7 |
| 18 a 24 | 4 | 10 |
| 26 a 30 | 5 | 10 |
| 32 a 42 | 5 | 13 |
| 44 a 48 | 5 | 20 |
Applications of ASME B16.11 Threaded Boss
- Chemical and Petrochemical Processing: Used to connect pipes and ensure tight seals in chemical processing environments.
- Refineries: Essential for fluid connections in oil refining processes.
- Electronics: Utilized in electronic systems for secure fluid and gas connections.
- Fertilizer Industry: Provides reliable connections in the production and handling of fertilizers.
- Power Plants: Critical for maintaining sealed connections in various power plant systems.
- Nuclear Power: Ensures secure fluid handling in nuclear power plants.
- Oil and Gas: Used extensively in the oil and gas industry for effective and safe fluid handling.
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