Forget Fittings ASME B16.11
Threaded Cap Fitting
Table of Content
- Threaded Cap Standard Specification
- Threaded End Cap Dimensions Standard
- Threaded End Cap Material & Grades
- Types of ASME B16.11 Threaded Cap
- Class 3000 Threaded Cap Dimensions
- Class 6000 Threaded Cap Dimensions
- Male Threaded End Cap Temperature Ratings Table
- Female Threaded End Cap Dimensional Tolerance
- Applications of Forged Threaded / Screwed Pipe Caps
Kaizen Steel Industries is a well-known manufacturer & supplier of ASME B16.11 Threaded Caps. Threaded Cap fittings are typically liquid or gas tight and designed to handle multiple cycles of tightening without the threads loosening. Our Threaded Pipe Caps can be either welded or screwed onto pipes, depending on your needs.
The ASME B16.11 standard for threaded caps includes details on ratings, tolerances, dimensions, marking, and material requirements for socket-welding and threaded forged fittings. It covers Alloy Steel Forged Screwed Pipe Caps and ASME B16.11 Threaded Caps for different pressure classes: Class 2000, 3000, and 6000 for threaded end fittings. For socket-weld end fittings, the pressure classes are Class 3000, 6000, and 9000.
The B16.11 Threaded Pipe Cap dimensions should be used along with equipment described in other ASME B16 standards, as well as other ASME standards like the Boiler and Pressure Vessel Code and the B31 Piping Codes.
The ASTM A182 standard for SS Threaded Pipe Caps covers forged or rolled alloy and stainless steel pipe flanges, fittings, and valves. This standard is for Stainless Steel Threaded Pipe Caps used in high-temperature applications.
After hot working, forgings like the Forged Threaded Pipe Cap need to be cooled to a specific temperature before heat treatment. The heat treatment process, including austenitizing/solution temperature, cooling methods, and quenching, must follow certain requirements.
The materials used to make Forged Screwed Pipe Caps and ASME B16.11 Threaded Caps must meet specific chemical composition requirements. Common elements used include silicon, nickel, chromium, molybdenum, carbon, manganese, phosphorus, columbium, and titanium.
The material for ANSI B16.11 Forged Threaded Pipe Caps should meet mechanical property requirements for the ordered grade. Typically, mechanical properties tested for ASME B16.11 Forged Threaded End Pipe Caps include tensile strength, yield strength, elongation, and Brinell hardness. All H grades and Grade F 63 Screwed Pipe Caps must also be tested for average grain size.
We stock Threaded End Pipe Caps for immediate shipment. We also supply Threaded Steel Pipe Caps used in various industries, including chemical processing, oil refineries, petrochemicals, and more.
Threaded Cap Standard Specification
| Dimensions | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| Size | 1/8″ NB TO 4″ NB |
| Class | 3000 LBS, 6000 LBS, 9000 LBS |
| Type | Threaded (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT |
| Form | Threaded Cap, Threaded End Cap |
| Value Added Services: | Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering |
| Production Grades: | Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel |
Threaded End Cap Dimensions Standard
| ASME: | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| DIN: | DIN2605, DIN2615, DIN2616, DIN2617, DIN28011 |
| EN: | EN10253-1, EN10253-2 |
Threaded End Cap Material & Grades
| Material | Specifications |
|---|---|
| Stainless Steel Forged Threaded Cap | 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 |
| Duplex & Super Duplex Steel Forged Threaded End Cap | ASTM A182 – F51, F53, F55, S31803, S32205, S32550, S32750, S32760, S32950 |
| Carbon Steel Forged Threaded Pipe Cap | ASTM/ASME A105, ASTM/ASME A350 LF2, ASTM/ASME A53 GR. A & B, ASTM A106 GR. A, B & C, API 5L GR. B, API 5L X42, X46, X52, X60, X65 & X70, ASTM/ASME A691 GR A, B & C |
| Alloy Steel Forged Threaded Cap | ASTM/ASME A182, ASTM/ASME A335, ASTM/ASME A234 GR P1, P5, P9, P11, P12, P22, P23, P91, ASTM/ASME A691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9 CR, 91 |
| Copper Alloy Steel Forged Threaded End Cap | ASTM/ASME SB 111 UNS NO. C10100, C10200, C10300, C10800, C12000, C12200, C70600, C71500, ASTM/ASME SB 466 UNS NO. C70600 (CU-NI-90/10), C71500 (CU-NI-70/30) |
| Nickel Alloy Forged Threaded Cap | ASTM/ASME SB 336, ASTM/ASME SB 564/160/163/472, UNS 2200 (NICKEL 200), UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8020 (ALLOY 20/20 CB 3), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C276) |
Types of ASME B16.11 Threaded Cap
Class 3000 elbow, Threaded Cap
Class 6000 elbow, Threaded Cap
Class 9000 elbow, Threaded Cap
B16.11 Threaded Cap
Class 3000 Threaded Cap Dimensions
| NPS (Normal Pipe Sizes) | End to End | O.D. (Outside Diameter) | Min. End Wall Thick. | Minimum Thread Length | |
| A | D | G | B | J | |
| 1/2 | 32 | 28 | 6.4 | 10.9 | 13.6 |
| 3/4 | 37 | 35. | 6.4 | 12.7 | 13.9 |
| 1 | 41 | 44 | 9.7 | 14.7 | 17.3 |
| 1.1/4 | 44 | 57 | 9.7 | 17 | 18 |
| 1.1/2 | 44 | 64 | 11.2 | 17.8 | 18.4 |
| 2 | 48 | 76 | 12.7 | 19 | 19.2 |
| 2.1/2 | 60 | 92 | 15.7 | 23.6 | 28.9 |
| 3 | 65 | 108 | 19 | 25.9 | 30.5 |
| 4 | 68 | 140 | 22.4 | 27.7 | 33 |
Class 6000 Threaded Cap Dimensions
| Normal Pipe Sizes (NPS) | End to End | O.D. (Outside Diameter) | End Wall Thickness Minimum | Minimum Thread Length | |
| A | D | G | B | J | |
| 1/2 | 33 | 38 | 7.9 | 10.9 | 13.6 |
| 3/4 | 38 | 44 | 7.9 | 12.7 | 13.9 |
| 1 | 43 | 57 | 11.2 | 14.7 | 17.3 |
| 1.1/4 | 46 | 64 | 11.2 | 17 | 18 |
| 1.1/2 | 48 | 76 | 12.7 | 17.8 | 18.4 |
| 2 | 51 | 92 | 15.7 | 19 | 19.2 |
| 2.1/2 | 64 | 108 | 19 | 23.6 | 28.9 |
| 3 | 68 | 127 | 22.4 | 25.9 | 30.5 |
| 4 | 75 | 159 | 28.4 | 27.7 | 33 |
Male Threaded End Cap Temperature Ratings Table
| ASME B16.11 Cap Pressure | |||||
|---|---|---|---|---|---|
| Temperature | Class | ||||
| 150 | 300 | ||||
| 1/4 – 1 inches | 1 1/4 – 2 inches | 2 1/2 – 3 inches | |||
| (oF) | (oC) | ||||
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | – | 935 | 750 | 560 |
| 450 | 232 | – | 725 | 600 | 475 |
| 500 | 260 | – | 510 | 450 | 385 |
| 550 | 288 | – | 300 | 300 | 300 |
Female Threaded End Cap Dimensional Tolerance
| ANSI B16.11 American Standard Dimensional Tolerances | ||
|---|---|---|
| “A” – Threaded Center To Bottom | For Size 1/8″ And 1/4″ | ± 0.03″ |
| 3/8″, 1/2″ And 3/4″ | ± 0.06″ | |
| 1″, 1-1/4″, 1-1/2″ And 2″ | ± 0.08″ | |
| 2-1/2″, 3″, And 4″ | ± 0.10″ | |
| “B” – Threaded Bore Diameter | For Size 1-1/2″ And Smaller | + 0.020″ – 0.000″ |
| 2″, 2-1/2″, 3″ And 4″ | + 0.025″ – 0.000″ | |
| “C” – Threaded Wall Thick. | Min. = 1.09 T (But Not Less Than 5/32″) T = Wall Thickness Of Nominal Pipe Sizes | |
| “D” – Bore Diameter Of Pipe Fitting | For Size 2″ And Smaller | ± 0.030″ |
| 2-1/2″, 3″ And 4″ | ± 0.060″ | |
| “E” – Threadeds- Bottom To Bottom – Full Couplings | For Size 1/8″ And 1/4″ | ± 0.06″ |
| 3/8″, 1/2″ And 3/4″ | ± 0.12″ | |
| 1″, 1-1/4″, 1-1/2″ And 2″ | ± 0.16″ | |
| 2-1/2″, 3″, And 4″ | ± 0.20″ | |
| “F” – Bottom Of Threaded To Opposite Face – ANSI B16.11 Half Couplings | For Size 1/8″ And 1/4″ | ± 0.03″ |
| 3/8″, 1/2″ And 3/4″ | ± 0.06″ | |
| 1″, 1-1/4″, 1-1/2″ And 2″ | ± 0.08″ | |
| 2-1/2″, 3″, And 4″ | ± 0.10″ | |
| “G” – Gap Of Welding | Approx. 0.06″ Before Welding Recommended Gap | |
| “H” – Min. Flat | Min. Flat = 0.75 X Min. Threaded Wall Thick. | |
Applications of Forged Threaded / Screwed Pipe Caps
ASME B16.11 Threaded Pipe Caps are known for their excellent performance and are designed to meet various demands. We provide a wide range of Forged Screwed End Pipe Caps through a global network of stock-keeping branches. These Forged Threaded End Pipe Caps are used in many industries, including:
Stainless Steel Forged Threaded Pipe Caps: Used in oil and gas pipelines.
Forged Threaded Pipe Caps: Applied in the chemical industry.
Alloy Steel Threaded Pipe Caps: Utilized in plumbing.
Forged Screwed Pipe Caps: Used in heating systems.
Threaded Forged Pipe Caps: Implemented in water supply systems.
ANSI B16.11 Forged Threaded Pipe Caps: Applied in power plants.
Threaded Pipe Caps: Used in the paper and pulp industry.
Forged Screwed Pipe Caps: Suitable for general-purpose applications.
Forged Threaded Pipe Caps: Utilized in the fabrication industry.
Forged Screwed Pipe Caps: Used in food processing.
Forged Threaded Pipe Caps: Applied in structural piping.
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