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Type: Long Pattern (LP) and Short Pattern (SP)
Size Range: 1/2” - 24” / DN15 - 600
Thickness Schedule: SCH 10 - SCH 160, XXS
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|---|---|
Lap joint stub end is generally matched with flange and benefit the flange to align bolt holes smoothly. There are two types that long pattern and short pattern.
Buttwelding Fittings are used in a piping system to change direction or function of media, to branch off, reduce pipe size or attach auxiliary equipment. They are availbale in multiple types as elbow, tee, cap, reducer, stub end and oelt, that produced in cold and hot forming based on ASTM A403 and ASTM A234 specification.
ASTM A403 Specificaiton
This specification covers wrought stainles steel fittings for pressure piping applications. They are designed in WP or CR based on ASME or MSS standard dimensions. You need to indicate seamless or welded type while purchasing WP grades fittings.
ASTM A234 Specification
This specifiation covers wrought carbon steel and alloy steel fittings of semaless and welded construction by the standard of ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95 and MSS -SP-97. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.
Lap Joint Stub End Type & Material
| Type | Long Pattern (LP) and Short Pattern (SP) |
| Size Range | 1/2” - 24” / DN15 - 600 |
| Thickness Schedule | SCH 10 - SCH 160, XXS |
| China Standard | GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409 |
| America Standard | ANSI / ASME B16.9 / MSS SP 43 |
| Japan Standard | JIS B2311/2312/2313 |
| Germany Standard | DIN2605/2615/2616/2617 |
| Europe Standard | EN10253 |
| Carbon Steel | Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC |
| Low Temp Carbon Steel | Q345B, 16Mn, ASTM A420 WPL6 |
| Pipeline Steel | ASTM A860 WPHY 42 / 46 / 56 / 60 / 65 |
| Alloy Steel | ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92, 15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5 |
| Stainless Steel | ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347,904L |
| Duplex Stainless Steel | ASTM A815 S32205, S31803, 32750, 32760 |
Lap Joint Stub End Dimensions & Weight
| DN | NPS | OD | F | R | G | SCH40 WEIGHT | |||||
| Max. | Min. | Long Type | Short Type | A | Bmax | LP (kg) | SP (kg) | ||||
| 15 | 1/2 | 22.8 | 20.5 | 76 | 51 | 3 | 0.8 | 35 | 0.12 | 0.09 | |
| 20 | 3/4 | 28.1 | 25.9 | 76 | 51 | 3 | 0.8 | 43 | 0.16 | 0.12 | |
| 25 | 1 | 35.0 | 32.6 | 102 | 51 | 3 | 0.8 | 51 | 0.32 | 0.18 | |
| 32 | 11/4 | 43.6 | 41.4 | 102 | 51 | 5 | 0.8 | 64 | 0.43 | 0.25 | |
| 40 | 11/2 | 49.9 | 47.5 | 102 | 51 | 6 | 0.8 | 73 | 0.52 | 0.31 | |
| 50 | 2 | 62.4 | 59.5 | 152 | 64 | 8 | 0.8 | 92 | 1.02 | 0.52 | |
| 65 | 21/2 | 75.3 | 72.2 | 152 | 64 | 8 | 0.8 | 105 | 1.60 | 0.81 | |
| 80 | 3 | 91.3 | 88.1 | 152 | 64 | 10 | 0.8 | 127 | 2.11 | 1.10 | |
| 90 | 31/2 | 104.0 | 100.8 | 152 | 76 | 10 | 0.8 | 140 | 2.55 | 1.52 | |
| 100 | 4 | 116.7 | 113.5 | 152 | 76 | 11 | 0.8 | 157 | 3.05 | 1.80 | |
| 125 | 5 | 144.3 | 140.5 | 203 | 76 | 11 | 1.6 | 186 | 5.42 | 2.25 | |
| 150 | 6 | 171.3 | 167.5 | 203 | 89 | 13 | 1.6 | 216 | 7.02 | 3.59 | |
| 200 | 8 | 222.1 | 218.3 | 203 | 102 | 13 | 1.6 | 270 | 10.6 | 5.98 | |
| 250 | 10 | 277.2 | 272.3 | 254 | 127 | 13 | 1.6 | 324 | 18.4 | 10.2 | |
| 300 | 12 | 328.0 | 323.1 | 254 | 152 | 13 | 1.6 | 381 | 22.8 | 14.9 | |
| 350 | 14 | 359.9 | 354.8 | 305 | 152 | 13 | 1.6 | 413 | 28.7 | 15.8 | |
| 400 | 16 | 411.0 | 405.6 | 305 | 152 | 13 | 1.6 | 470 | 33.1 | 18.9 | |
| 450 | 18 | 462.0 | 456.0 | 305 | 152 | 13 | 1.6 | 533 | 38.0 | 22.0 | |
| 500 | 20 | 514.0 | 507.0 | 305 | 152 | 13 | 1.6 | 584 | 42.3 | 24.3 | |
| 550 | 22 | 565.0 | 558.0 | 305 | 152 | 13 | 1.6 | 641 | - | - | |
| 600 | 24 | 616.0 | 609.0 | 305 | 152 | 13 | 1.6 | 692 | 51.2 | 29.6 | |
Notes:
1) When the short type is used on the larger flanges with PN50 and PN110(300 and 600LB)and on flanges with PN150(900LB) and above, or the long type is used on the larger flange with PN260 and PN420(1500 and 2500LB),the length of the cylinder may be added to be feasible the welding,the adding length shall be negotiated by manufacturer and purchaser.
2) The thickness of joint shall be added if the TG and MFM contact surface of flange are used, and the adding thickness shall increase (not be included in) the base length F.
3) The radius of fillet R (type A) shall conform to the ones of loose flanges according to GB/T9118.1~9118.2 or ASME B16.5. The radius of fillet R (type B) is only applied for the standards of MSS SP-43 with short length F.
4) The lap joint diameter G shall conform to the standard machined face indicated in ASME b16.5, and the back of joint shall be machined to conform to the surface of installation.When RJ used, the size K specified in ASME B16.5 shall apply.
5) The minimum lap joint thickness t shall not be less than nominal pipe wall thickness.
Lap joint stub end is generally matched with flange and benefit the flange to align bolt holes smoothly. There are two types that long pattern and short pattern.
Buttwelding Fittings are used in a piping system to change direction or function of media, to branch off, reduce pipe size or attach auxiliary equipment. They are availbale in multiple types as elbow, tee, cap, reducer, stub end and oelt, that produced in cold and hot forming based on ASTM A403 and ASTM A234 specification.
ASTM A403 Specificaiton
This specification covers wrought stainles steel fittings for pressure piping applications. They are designed in WP or CR based on ASME or MSS standard dimensions. You need to indicate seamless or welded type while purchasing WP grades fittings.
ASTM A234 Specification
This specifiation covers wrought carbon steel and alloy steel fittings of semaless and welded construction by the standard of ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95 and MSS -SP-97. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.
Lap Joint Stub End Type & Material
| Type | Long Pattern (LP) and Short Pattern (SP) |
| Size Range | 1/2” - 24” / DN15 - 600 |
| Thickness Schedule | SCH 10 - SCH 160, XXS |
| China Standard | GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409 |
| America Standard | ANSI / ASME B16.9 / MSS SP 43 |
| Japan Standard | JIS B2311/2312/2313 |
| Germany Standard | DIN2605/2615/2616/2617 |
| Europe Standard | EN10253 |
| Carbon Steel | Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC |
| Low Temp Carbon Steel | Q345B, 16Mn, ASTM A420 WPL6 |
| Pipeline Steel | ASTM A860 WPHY 42 / 46 / 56 / 60 / 65 |
| Alloy Steel | ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92, 15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5 |
| Stainless Steel | ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347,904L |
| Duplex Stainless Steel | ASTM A815 S32205, S31803, 32750, 32760 |
Lap Joint Stub End Dimensions & Weight
| DN | NPS | OD | F | R | G | SCH40 WEIGHT | |||||
| Max. | Min. | Long Type | Short Type | A | Bmax | LP (kg) | SP (kg) | ||||
| 15 | 1/2 | 22.8 | 20.5 | 76 | 51 | 3 | 0.8 | 35 | 0.12 | 0.09 | |
| 20 | 3/4 | 28.1 | 25.9 | 76 | 51 | 3 | 0.8 | 43 | 0.16 | 0.12 | |
| 25 | 1 | 35.0 | 32.6 | 102 | 51 | 3 | 0.8 | 51 | 0.32 | 0.18 | |
| 32 | 11/4 | 43.6 | 41.4 | 102 | 51 | 5 | 0.8 | 64 | 0.43 | 0.25 | |
| 40 | 11/2 | 49.9 | 47.5 | 102 | 51 | 6 | 0.8 | 73 | 0.52 | 0.31 | |
| 50 | 2 | 62.4 | 59.5 | 152 | 64 | 8 | 0.8 | 92 | 1.02 | 0.52 | |
| 65 | 21/2 | 75.3 | 72.2 | 152 | 64 | 8 | 0.8 | 105 | 1.60 | 0.81 | |
| 80 | 3 | 91.3 | 88.1 | 152 | 64 | 10 | 0.8 | 127 | 2.11 | 1.10 | |
| 90 | 31/2 | 104.0 | 100.8 | 152 | 76 | 10 | 0.8 | 140 | 2.55 | 1.52 | |
| 100 | 4 | 116.7 | 113.5 | 152 | 76 | 11 | 0.8 | 157 | 3.05 | 1.80 | |
| 125 | 5 | 144.3 | 140.5 | 203 | 76 | 11 | 1.6 | 186 | 5.42 | 2.25 | |
| 150 | 6 | 171.3 | 167.5 | 203 | 89 | 13 | 1.6 | 216 | 7.02 | 3.59 | |
| 200 | 8 | 222.1 | 218.3 | 203 | 102 | 13 | 1.6 | 270 | 10.6 | 5.98 | |
| 250 | 10 | 277.2 | 272.3 | 254 | 127 | 13 | 1.6 | 324 | 18.4 | 10.2 | |
| 300 | 12 | 328.0 | 323.1 | 254 | 152 | 13 | 1.6 | 381 | 22.8 | 14.9 | |
| 350 | 14 | 359.9 | 354.8 | 305 | 152 | 13 | 1.6 | 413 | 28.7 | 15.8 | |
| 400 | 16 | 411.0 | 405.6 | 305 | 152 | 13 | 1.6 | 470 | 33.1 | 18.9 | |
| 450 | 18 | 462.0 | 456.0 | 305 | 152 | 13 | 1.6 | 533 | 38.0 | 22.0 | |
| 500 | 20 | 514.0 | 507.0 | 305 | 152 | 13 | 1.6 | 584 | 42.3 | 24.3 | |
| 550 | 22 | 565.0 | 558.0 | 305 | 152 | 13 | 1.6 | 641 | - | - | |
| 600 | 24 | 616.0 | 609.0 | 305 | 152 | 13 | 1.6 | 692 | 51.2 | 29.6 | |
Notes:
1) When the short type is used on the larger flanges with PN50 and PN110(300 and 600LB)and on flanges with PN150(900LB) and above, or the long type is used on the larger flange with PN260 and PN420(1500 and 2500LB),the length of the cylinder may be added to be feasible the welding,the adding length shall be negotiated by manufacturer and purchaser.
2) The thickness of joint shall be added if the TG and MFM contact surface of flange are used, and the adding thickness shall increase (not be included in) the base length F.
3) The radius of fillet R (type A) shall conform to the ones of loose flanges according to GB/T9118.1~9118.2 or ASME B16.5. The radius of fillet R (type B) is only applied for the standards of MSS SP-43 with short length F.
4) The lap joint diameter G shall conform to the standard machined face indicated in ASME b16.5, and the back of joint shall be machined to conform to the surface of installation.When RJ used, the size K specified in ASME B16.5 shall apply.
5) The minimum lap joint thickness t shall not be less than nominal pipe wall thickness.
