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Dimensions of ASME B16.9 Standard Lap Joint Stub Ends

2019-07-16 15:47:03 Hits:2025 American Standards / Product Standards

Haihao Group is one of the largest manufacturer of ASME B16.9 butt welding pipe fittings in China.Our ASME B16.9 butt welding pipe fittings contain lap joint stub end,tees(equal tees and reducing tees),crosses(equal crosses and reducing crosses),elbows(45 degree elbows,90 degree elbows,180 degree elbows,long radius elbows,short radius elbows),caps,reducers(concentric reducers,eccentric reducers).It is accessible to our customers requirements in different range of diameters,wall thickness and size,which also at quite affordable rates.We are always endeavoring to provide our customers with the best products at the best price with the best service.

ASME B16.9 A403 lap joint stub ends finished in Haihao Group

ASME B16.9 A403 lap joint stub ends finished in Haihao Group

A lap joint stub end is always used with the lap joint flange for a backing.This Type of connection are applied in low pressure and critical conditions which is a cheap way of flanging.We manufacture,supply and export ANSI / ASME B16.9 butt welding lap joint stub end in the nominal size ½-24.It has applications in mining,oil refineries, steel and aluminium manufacturing,aerospace industries,equipment manufacturing and further more.We also provide non-standard size lap joint stub ends.

Dimensions of ASME B16.9 Standard Lap Joint Stub Ends:

Dimensions of ASME B16.9 standard lap joint stub ends

Dimensions of ASME B16.9 standard lap joint stub ends

Nominal Pip Size(NPS) Outside Diameter of Barrel Long Pattern Length, F Short Pattern Length, F Radius of Fillet, R  Diameter of Lap, G
Max Min [Notes(3),(4)] [Notes(3),(4)] [Note(5)] [Note(6)]
½ 22.8 20.5 76 51 3 35
¾ 28.1 25.9 76 51 3 43
1 35 32.6 102 51 3 51
1 ¼ 43.6 41.4 102 51 5 64
1 ½ 49.9 47.5 102 51 6 73
2 62.4 59.5 152 64 8 92
2 ½ 75.3 72.2 152 64 8 105
3 91.3 88.1 152 64 10 127
3 ½ 104 100.8 152 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
12 328 323.1 254 152 13 381
14 359.9 354.8 305 152 13 413
16 411 405.6 305 152 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
GENERAL NOTE: All dimensions are in millimeters.
Notes:
(1) Gasket face finish shall be in accordance with ASME B16.5 for raised face flanges.
(2) The lap thickness T shall not be less than nominal pipe wall thickness.
(3) When short pattern stub ends are used with larger flanges in Classes 300 and 600,with most sizes in Classes 900 and higher,and when long pattern stub ends are used with larger flanges in Classes 1500 and 2500,it may necessary to increase the length of the stub ends in order to avoid covering the weld with the flange.Such increases in length shall be a matter of agreement between the manufacturer and purchaser.
(4) When special facings such as tongue and groove,male and female,etc.,are employed,additional lap thickness must be provided and such additional thickness shall be in addition to (not included in)the basic length F.
(5) These dimensions conform to the radius established for lap joint flanges in ASME B16.5.
(6) This dimension conforms to standard machined facings shown in ASME B16.5.The back face of the lap shall be machined to conform to the surface on which it seats.Where ring joint facings are to be applied, use dimension K as given in ASME B16.5.

Materials of ASME B16.9 lap joint stub ends:

We manufacture the ASME B16.9 lap joint stub ends with different materials such as carbon steel,stainless steel and alloy steel as follows:

  • Carbon steel: ASTM A234 WPB,ASTM A234 WPC,ASTM A420 WPL6,MSS SP-75 WPHY42,WPHY52,WPHY60, WPHY65,WPHY70,S235,S355,ST37.2,SS400,GOST CT20,etc.
  • Stainless steel: ASTM A403,ASTM A312,WP304,WP304L,WP316,WP316L,WP321,WP347,etc.
  •  Alloy steel: ASTM A234 WP1,WP5,WP9,WP11,WP22,WP91,ASTM A860 WPL6,etc.

Meanwhile,we manufacture & supply different types of butt welding fittings according to ASME B16.9 standard as follows:

Haihao Group manufacture & supply & export pipeline products more than 30 years,which contain butt welding pipe fittings(elbows,tees,reducers,caps,bends,crosses,etc),forged pipe fittings(socket weld/threaded elbows,tees,reducers,crosses,couplings,union,outlet,nipple,etc),steel pipes(seamless steel pipes,SAW/ERW steel pipes,casing and tubing pipes,etc) and forged flanges(weld neck flange,slip on flange,blind flange,lap joint flange,plate flange,threaded flange,socket weld flange,orifice flange,spectacle blind flange,weld overlay cladding flange,etc).We supply the products in different standards such as ANSI/ASME, ASTM, BS, EN, JIS, GOST, ISO, MSS, etc.If you want to know more about our pipeline products,please email us:sales@haihaogroup.com

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