Forget Fittings ASME B16.11
Threaded Cross Fitting
Table of Content
- Threaded Cross Specification
- Manufacturing Standards of Threaded Equal Cross
- ASME B16.11 Threaded Cross Material Grades
- Types of ASTM A182 SS Threaded Cross
- Threaded Cross Class 2000 Dimensions NPS 1/2 to 4
- Threaded Cross Class 3000 Dimensions NPS 1/2 to 4
- Threaded Cross Class 6000 Dimensions NPS 1/2 to 4
- ASME B16.11 Threaded Cross Weight
- Screwed Equal Cross Pressure Rating
- Screwed Unequal Cross Tolerance Formula
- Forged Threaded / Screwed Equal Cross Application
ASME B16.11 Threaded Cross is a type of pipe fitting where four pipes meet at a single point, also known as a four-way fitting. Most Stainless Steel Threaded Crosses have female threads and are connected to male threaded pipes. The dimensions of the threaded cross are based on the sizes of the connecting pipes, standards, and other specifications.
Threaded cross fittings can be either equal or unequal. The dimensions for an Equal Cross are determined mainly by the size of the connecting pipes. In contrast, the dimensions for an Unequal Cross are more complex.
The ASME B16.11 Threaded Cross Pipe Fitting standard covers tolerances, ratings, dimensions, marking, and material requirements for both socket-weld and threaded forged fittings. These fittings are classified into:
- Class 2000, 3000, and 6000 for threaded end fittings.
- Class 3000, 6000, and 9000 for socket-weld end fittings.
The ASME B16.11 standard for stainless steel threaded crosses should be used alongside other ASME B16 series standards to ensure compatibility and compliance with the equipment.
The ASTM A182 SS Threaded Cross specification covers forged or rolled alloy and stainless steel pipe flanges, fittings, and valves. This type of cross is designed for high-temperature applications. After hot working, the forged threaded cross must be cooled to a specific temperature before heat treatment. This process involves careful control of heat treatment, including austenitizing or solution temperatures, cooling media, and quenching.
The materials used for making a threaded cross fitting must meet certain chemical compositions, including elements like phosphorus, silicon, nickel, carbon, manganese, chromium, molybdenum, columbium, and titanium. The material must also meet mechanical property requirements for the grade ordered, such as yield strength, tensile strength, elongation, and Brinell hardness. Additionally, all H grades and grade F 63 for threaded crosses must be tested for average grain size.
Kaizen Steel Industries manufacture & supply Threaded Crosses according to ASME B16.11 and BS 3799 standards. These standards cover pressure-temperature ratings, dimensions, marking, tolerances, and material requirements. We specialize in supplying Threaded Crosses in three pressure ratings: Class 2000, Class 3000, and Class 6000, all available at competitive prices in India. Please refer to the Threaded Pipe Cross Dimensions Chart before making a purchase.
Threaded Cross Specification
| Dimensions | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| Size | 1/8″~4″ (DN6~DN100) |
| Class | 3000 LBS, 6000 LBS, 9000 LBS |
| Type | Socket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT |
| Form | Threaded Cross, Threaded Pipe Cross, Threaded Equal Cross |
| 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 |
Manufacturing Standards of Threaded Equal Cross
| 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 |
ASME B16.11 Threaded Cross Material Grades
| Stainless Steel Forged Threaded Pipe Cross: | |
|---|---|
| Standard | ASTM A182, ASTM A312/A403 |
| Grade | F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, TP304, TP304L, TP316, TP316L |
| Duplex & Super Duplex Steel Forged Threaded Equal Cross: | |
| Standard | ASTM A182 |
| Grade | F51, F53, F55, S31803, S32205, S32550, S32750, S32760, S32950 |
| Carbon Steel Forged Threaded Cross: | |
| Standard | 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 Equal Cross: | |
| Standard | 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, 9CR, 91 |
| Copper Alloy Steel Forged Threaded Cross: | |
| Standard | ASTM / ASME SB 111 |
| Grade | 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 Equal Cross: | |
| Standard | ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472 |
| Grade | 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 C 276) |
Types of ASTM A182 SS Threaded Cross
Class 3000 elbow, Threaded Cross Pipe Fitting
Class 6000 elbow, Threaded Cross Pipe Fitting
Class 9000 elbow, Threaded Cross Pipe Fitting
B16.11 Threaded Cross Pipe Fitting
Threaded Cross Class 2000 Dimensions NPS 1/2 to 4
| NPS | Min Length of Thread | Outside Dia of Band D | Center to End A | Min WT | |
| B | J | ||||
| 1/2 | 10.9 | 13.6 | 33 | 28 | 3.18 |
| 3/4 | 12.7 | 13.9 | 38 | 33 | 3.18 |
| 1 | 14.7 | 17.3 | 46 | 38 | 3.68 |
| 1.1/4 | 17 | 18 | 56 | 44 | 3.89 |
| 1.1/2 | 17.8 | 18.4 | 62 | 51 | 4.01 |
| 2 | 19 | 19.2 | 75 | 60 | 4.27 |
| 2.1/2 | 23.6 | 28.9 | 92 | 76 | 5.61 |
| 3 | 25.9 | 30.5 | 109 | 86 | 5.99 |
| 4 | 27.7 | 33 | 146 | 106 | 6.55 |
Threaded Cross Class 3000 Dimensions NPS 1/2 to 4
| NPS | Min Length of Thread | Outside Dia of Band D | Center to End A | Min WT | |
| B | J | ||||
| 1/2 | 10.9 | 13.6 | 38 | 33 | 4.09 |
| 3/4 | 12.7 | 13.9 | 46 | 38 | 4.32 |
| 1 | 14.7 | 17.3 | 56 | 44 | 4.98 |
| 1.1/4 | 17 | 18 | 62 | 51 | 5.28 |
| 1.1/2 | 17.8 | 18.4 | 75 | 60 | 5.56 |
| 2 | 19 | 19.2 | 84 | 64 | 7.14 |
| 2.1/2 | 23.6 | 28.9 | 102 | 83 | 7.65 |
| 3 | 25.9 | 30.5 | 121 | 95 | 8.84 |
| 4 | 27.7 | 33 | 152 | 114 | 11.18 |
Threaded Cross Class 6000 Dimensions NPS 1/2 to 4
| NPS | Min Length of Thread | Outside Dia of Band D | Center to End A | Min WT | |
| B | J | ||||
| 1/2 | 10.9 | 13.6 | 46 | 38 | 8.15 |
| 3/4 | 12.7 | 13.9 | 56 | 44 | 8.53 |
| 1 | 14.7 | 17.3 | 62 | 51 | 9.93 |
| 1.1/4 | 17 | 18 | 75 | 60 | 10.59 |
| 1.1/2 | 17.8 | 18.4 | 84 | 64 | 11.07 |
| 2 | 19 | 19.2 | 102 | 83 | 12.09 |
| 2.1/2 | 23.6 | 28.9 | 121 | 95 | 15.29 |
| 3 | 25.9 | 30.5 | 146 | 106 | 16.64 |
| 4 | 27.7 | 33 | 152 | 114 | 18.67 |
ASME B16.11 Threaded Cross Weight
| Class 2000 | Nominal Pipe Size | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 | 4 |
| A | – | 7/8 | 31/32 | 1 1/8 | 1 5/16 | 1 1/2 | 1 3/4 | 2 | 2 3/8 | 3 | 3 3/8 | 4 3/16 | |
| B | – | 29/32 | 1 1/16 | 1 5/16 | 1 9/16 | 1 27/32 | 2 7/32 | 2 1/2 | 3 1/32 | 3 11/16 | 4 5/16 | 5 3/4 | |
| Wt | – | 0.500 | 0.460 | 0.777 | 1.125 | 1.688 | 2.450 | 3.188 | 5.560 | 16.438 | 19.500 | 32.688 | |
| Class 3000 | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 | 4 | |
| A | 7/8 | 31/32 | 1 1/8 | 1 5/16 | 1 1/2 | 1 3/4 | 2 | 2 3/8 | 2 1/2 | 3 1/4 | 3 3/4 | 4 1/2 | |
| B | 29/32 | 1 1/16 | 1 5/16 | 1 9/16 | 1 27/32 | 2 7/32 | 2 1/2 | 3 1/32 | 3 11/32 | 4 | 4 3/4 | 6 | |
| Wt | 0.438 | 0.567 | 0.970 | 1.500 | 2.500 | 3.620 | 4.125 | 6.500 | 8.125 | 16.750 | 25.675 | 32.000 | |
| Class 6000 | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 | 4 | |
| A | 31/32 | 1 1/8 | 1 5/16 | 1 1/2 | 1 3/4 | 2 | 2 3/8 | 2 1/2 | 3 1/4 | 3 3/4 | 4 3/16 | 4 1/2 | |
| B | 1 1/6 | 1 5/16 | 1 9/16 | 1 27/32 | 2 7/32 | 2 1/2 | 3 1/32 | 3 11/32 | 4 | 4 3/4 | 5 3/4 | 6 | |
| Wt | 0.563 | 1.188 | 1.500 | 2.750 | 4.313 | 6.625 | 10.750 | 11.500 | 22.188 | 27.500 | 54.000 | 43.500 | |
Screwed Equal Cross Pressure Rating
| Threaded Cross Pressure-Temperature | |||||
|---|---|---|---|---|---|
| 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 |
Screwed Unequal Cross Tolerance Formula
| 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. | |
Forged Threaded / Screwed Equal Cross Application
ASME B16.11 Threaded Crosses are renowned for their exceptional performance and are designed to meet demanding requirements. We offer a comprehensive range of Forged Screwed Crosses through our global network of stock-keeping branches. These Forged Threaded Crosses are used in various industries, including:
- Oil and Gas Pipeline: Stainless Steel Forged Threaded Crosses
- Chemical Industry: Forged Threaded Crosses
- Plumbing: Alloy Steel Threaded Equal Crosses
- Heating: Forged Screwed Equal Crosses
- Water Supply Systems: Threaded Forged Equal Crosses
- Power Plants: ANSI B16.11 Forged Threaded Crosses
- Paper & Pulp Industry: Threaded Equal Crosses
- General Purpose Applications: Forged Screwed Equal Crosses
- Fabrication Industry: Forged Threaded Crosses
- Food Processing Industry: Forged Screwed Equal Crosses
- Structural Pipe: Forged Threaded Equal Crosses
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