These lap joint stub end is a fittings that are used in the place of welded flanges to support the rotating back of flanges when required. Stubend is the other name for lab joints, it is used in the place of welded flanges where the rotating are desired. The features for this product are it is thermal stability, high mechanical strength and has long functional life. ASTM ASME A/SA 403, MSS SP43 & SP75 ANSI B16. 9ANSI B16. 28 ASTM A815 ASTM B363 B366, DIN2605 DIN2615 DIN2616 DIN2617, GB12459GB13401 and JIS2313 are the standard types used for manufacturing. All specifications are grades as ASME/ ASTM and A23, the materials by which it is made are stainless steel, 316/316L stainless steel, 304/304L stainless steel and chrome-moly along with carbon steel.
All the technical specification includes thickness that are based on thickness are based on ASME B 16.48 specifications or the products can be customized according to your requirement. The standard surface finish is 125-250 RMS serrated finish. All others are available on your request. Pipe Fittings Supplier are excellent providing these services from the year 1992 in many countries like UAE, Saudi Arabia, Kuwait, Qatar, Egypt, Turkey, Oman, Africa, Malaysia & many countries in USA & Europe.
Manufacturers & Suppliers of Buttweld Fittings Lap Joint Stub End. We strictly adhered to ANSI / ASME B16.9 manufacturing standards. It comes in different standards such as ANSI B16.9, ANSI B16.28, DIN2605, MSS-SP-43, DIN2615, DIN2616, DIN28011, DIN2617, EN10253-1, and EN10253-2. Some of the types in which they are available are Seamless |ERW |Welded |Fabricated. They are easy to install.
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We are India is a leading India based manufacturer, exporter and supplier of high quality, high performance stub end (lap joint) fittings in all major grades and dimensions. Stub ends can be supplied in standard and non-standard ANSI dimensions. Shree Aashapura Metal India offers ex-stock supply of stainless steel stub ends, carbon steel stub ends, alloy steel stub ends and nickel alloy stub ends. Special length stub ends or lap joints can also be offered on demand.Stub ends are fittings used in place of welded flanges where rotating back up flanges are desired. They are mainly used with standard Lap Joint Flanges.
Production Range of Stub End/Lap Joint
Outside Diameter:1/2″ – 24″
Type: Long/Short Lap Joint Stub Ends
Wall Thickness: 2mm – 100 mm / SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS
Production Grades: Stainless Steel, Alloy Steel, Duplex, High Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel
Value Added Services: Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering
Lap joint( stub ends) |
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Pattern |
lagre OD lap joint,alloy lap joint,long Lap joint
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size |
1/8”-48” |
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Pressure class |
100#-2500# |
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Manufacturing Standards - Stub End/Lap Joint
ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43
DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN: EN10253-1, EN10253-2
ASTM A403 – ASME SA403 – Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASME B16.9 – Factory-Made Wrought Fittings Buttwelding
ASME B16.25 – Buttwelding Ends ASME B16.28 – Wrought Steel Short Radius Elbows and Buttwelding Returns
MSS SP-43 – Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
Stub Ends - Material Grades
Stainless Steel Stub End; ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Stub End: ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Low Temperature Carbon Steel Stub End: ASTM A420 WPL3, A420 WPL6
Alloy Steel Stub End: ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
Duplex Steel Stub End: ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462
High Nickel Alloy Stub End: ASTM / ASME SB 336 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 )
Dimesions OF Lap Joint Stub Ends
| Nominal Pipe Size
(NPS) |
Outside Diameter at Bevel | Long Pattern | Short Pattern | Radius of Fillet | Diameter of Lap | |
| Max | Min | F | F | R | G | |
| 1/2 | 22.8 | 20.5 | 76 | 51 | 3 | 35 |
| 3/4 | 28.1 | 25.9 | 76 | 51 | 3 | 43 |
| 1 | 35.0 | 32.6 | 102 | 51 | 3 | 51 |
| 1-1/4 | 43.6 | 41.4 | 102 | 51 | 5 | 64 |
| 1-1/2 | 49.9 | 47.5 | 102 | 51 | 6 | 73 |
| 2 | 62.4 | 59.5 | 152 | 64 | 8 | 92 |
| 2-1/2 | 75.3 | 72.2 | 152 | 64 | 8 | 105 |
| 3 | 91.3 | 88.1 | 152 | 64 | 10 | 127 |
| 3-1/2 | 104.0 | 100.8 | 152 | 76 | 10 | 140 |
| 4 | 116.7 | 113.5 | 152 | 76 | 11 | 157 |
| 5 | 144.3 | 140.5 | 203 | 76 | 11 | 186 |
| 6 | 171.3 | 167.5 | 203 | 89 | 13 | 216 |
| 8 | 222.1 | 218.3 | 203 | 102 | 13 | 270 |
| 10 | 277.2 | 272.3 | 254 | 127 | 13 | 324 |
| 12 | 328.0 | 323.1 | 254 | 152 | 13 | 381 |
| 14 | 359.5 | 354.8 | 305 | 152 | 13 | 413 |
| 16 | 411.0 | 405.6 | 305 | 152 | 13 | 470 |
| 18 | 462 | 456 | 305 | 152 | 13 | 533 |
| 20 | 514 | 507 | 305 | 152 | 13 | 584 |
| 22 | 565 | 558 | 305 | 152 | 13 | 641 |
| 24 | 616 | 609 | 305 | 152 | 13 | 692 |
Stub Ends – ANSI 16.9 TOLERANCES
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DIMENSIONAL TOLERANCES – STUB ENDS |
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| For all fittings | Stub Ends | |||||
| Nominal Pipe Size (NPS) | Outside Ø at Bevel | Indide Ø at End | Wall Thickness t / t1 |
O.D. of Lap G | Fillet Radius of Lap – R | Overall Length. – F |
| 1/2 a 2 1/2 | 1 | 0,8 | Not | +0 -1 | +0 -1 | 2 |
| 3 a 3 1/2 | 1 | 1,6 | less | +0 -1 | +0 -1 | 2 |
| 4 | +2 -1 | 1,6 | than | +0 -1 | +0 -2 | 2 |
| 5 a 6 | +3 -1 | 1,6 | 87,50% | +0 -1 | +0 -2 | 2 |
| 8 | 2 | 1,6 | of nominal | +0 -1 | +0 -2 | 2 |
| 10 | +4 -3 | 3,2 | tickness | +0 -2 | +0 -2 | 2 |
| 12 to 18 | +4 -3 | 3,2 | +0 -2 | +0 -2 | 3 | |
| 20 a 24 | +6 -5 | 4,8 | +0 -2 | +0 -2 | 3 | |
| 26 a 30 | +7 -5 | 4,8 | ||||
| 32 a 48 | +7 -5 | 4,8 | ||||
Stub Ends – END WELDING BEVELS
