Lapped Joint Flange

Flange

1. Lapped Joint Flange Size: 1/2"-60"(DN10-DN1500) 


2. Lapped Joint Flange Types: Slip-On flange, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange, Plate flange, Long Welding Neck and  flat flange etc;


3. Lapped Joint Flange Material: 

Carbon steel: ASTM A105/SA105N; ASTM A350 LF1; LF2; CL1/CL2, CT20;16MN;RST37.2;S235JR;P245GH;P250GH;P250GHM; C22.8;Q235;15CrMo

Stainless steel: ASTM A182, SS303; SS304/304L; SS316/316L; F321; F347; 316Ti; A182F317/317L; SS400;SF440

Alloy Steel:ASTM A182 A182 F12,F11,F22,F5,F9,F91,F51,F53,F55,F60,F44,F304H,F316H,F317H,F321H,F347H,INCONEL 600,625,825,etc.


4. Lapped Joint Flange Wall Thickness: Sch5, Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS, Sch160;


5. Lapped Joint Flange Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue, Groove, Small-Tongue, Groove, etc


6. Lapped Joint Flange Pressure Rating: 

ANSI B16.5: Class 150 Flanges-Class 2500 Flanges;

DIN: 6Bar 10Bar 16Bar 25Bar 40Bar 63Bar

JIS: 5K Flanges-30K Flanges

EN1092-1: 6Bar 10Bar 16Bar 25Bar 40Bar 63Bar 100Bar


7. Lapped Joint Flange Surface treatment: Anti-rust oil, black / yellow / transparent / electric galvanized / hot galvanized.

8. Lapped Joint Flange Sealing Surface: FF, RF, MFM, TG, FF

9. Lapped Joint Flange Heat Treatment: Normalizing, Annealing, Quenching Tempering.


10. Lapped Joint Flange Standard:

(1) ANSI B16.5, A105 150LB / 300LB / 600LB / 900LB / 1500LB / 2500LB

(2) DIN 2573 PN6 / DIN 2576 PN10 / DIN2502 PN16 / DIN2503 P25-40 / DIN2566 PN16 / DIN2631-2635 RST37.2 OR C22.8

(3) JIS SS400 OR SF440 5K / 10K / 16K / 20K / 30K

(4) UNI 2276 / 2277 / 2278 / 6084 / 6089 / 6090 / 2544 / 2282 / 6091-6093

(5) EN1092 PN6 / PN10 / PN16 / PN25 / PN40 / TYPE1 TYPE2 TYPE 5 TYPE 12 TYPE 13

(6) BS4504 SANI1123 1000/3, 1600/3, 2500/3, T/D, T/E, T/F carbon steel flange

(7) AS2129 TABLE D / TABLE H / TABLE E carbon steel flange

(8) GOST 12820-80 / 12821-80 carbon steel flange


11. Lapped Joint Flange Tolerance: according to the standard.

12. Lapped Joint Flange Certification: ISO9001:2000 , API, CE 

13. Lapped Joint Flange Package: Plywood pallet or case.

14. Lapped Joint Flange Delivery time: At the earliest ,within the period required by customer. 

15. Lapped Joint Flange Payment term: T/T or L/C

16. Lapped Joint Flange Sample: available

17. Lapped Joint Flange Price: >>Get newest price list

Introduction

LAPPED JOINT FLANGE is also called Loose flange or LJ flange,it is used with a stub end, which is welded to the pipe.The advantage of this flange connection is that the flange can be rotated. It is easy to align the bolt holes and easy to install on large diameter pipes.Loose flanges are also suitable for areas where the pipe needs to be removed frequently for cleaning or inspection, or where only the flange and not the pipe need to be rotated when aligning the flange bolt hole.When using the loose flange, the material of the flange stub shall be the same as that of the pipe;And flange material can be different from pipe material, so it is more suitable for conveying corrosive medium of pipe and non-ferrous metal pipe system, in order to achieve as much as possible to save expensive materials (such as stainless steel and non-ferrous metal).

According to the different stubs, the flange can be subdivided into 4 types: butt welding ring with neck loose flange, butt welding ring plate type loose flange, flat welding ring plate type loose flange and flanged ring plate type loose flange.

As the lapped joint flange manufacturers in China, EATHU can also supply OEM flanges according to customers’ drawings or designs.

Welcome to contact Eathu for more information.



Dimensions and Weight Chart for ASME/ANSI B16.5 Class 150 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap  RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/29022.911.216330415.760.3
203/410028.212.716338415.769.9
25111034.914.317349415.779.4
321 1/411543.715.921559415.788.9
401 1/21255017.522665415.798.4
50215062.519.125878419.1120.7
652 1/218075.422.329890419.1139.7
80319091.423.93010108419.1152.4
903 1/2215104.123.93210122819.1177.8
1004230116.823.93311135819.1190.5
1255255144.423.93611164822.4215.9
1506280171.425.44013192822.4241.3
2008345222.228.64413246822.4298.5
25010405277.430.249133051225.4362
30012485328.231.856133651225.4431.8
35014535360.23579134001228.4476.3
40016595411.236.687134571628.4539.8
45018635462.339.797135051631.75577.9
50020700514.442.9103135592031.75635
6002481561647.7111136632035.1749.3


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 300 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/29522.914.322338415.766.7
203/411528.215.92534841982.6
25112534.917.52735441988.9
321 1/413543.719.12756441998.4
401 1/21555020.730670422.3114.3
50216562.522.333884819127
652 1/219075.425.4388100822.3149.2
80321091.428.64310117822.3168.3
903 1/2230104.130.24410133822.3184.2
1004255116.831.84811146822.3200
1255280144.4355111178822.3235
1506320171.436.652132061222.3269.9
2008380222.241.362132601225.4330.2
25010445277.447.795133211628.4387.4
30012520328.250.8102133751631.7450.8
35014585360.254111134252031.7514.4
40016650411.257.2121134832035571.5
45018710462.360.4130135332435628.6
50020775514.463.5140135872435685.8
6002491561669.9152137022441.1812.8


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 400 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/29522.914.322338415.766.7
203/411528.215.92534841982.6
25112534.917.52735441988.9
321 1/413543.720.72956441998.4
401 1/21555022.332670422.3114.3
50216562.525.437884819127
652 1/219075.428.6418100822.3149.2
80321091.431.84610117822.3168.3
903 1/2230104.1354910133825.4184.2
1004255116.8355111146825.4200
1255280144.538.15411178825.4235
1506320171.441.357132061235.4269.9
2008380222.247.768132601228.4330.2
25010445277.454102133211631.75387.4
30012520328.257.2108133751635.1450.8
35014585360.260.4117134252035.1514.4
40016650411.263.5127134832038.1571.5
45018710462.366.7137135332438.1628.6
50020775514.469.9146135872441.1685.8
6002491561676.2159137022447.8812.8


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 600 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/29522.914.322338415.766.7
203/411528.215.92534841982.6
25112534.917.52735441988.9
321 1/413543.720.72956441998.4
401 1/21555022.332670422.3114.3
50216562.525.437884819127
652 1/219075.428.6418100822.3149.2
80321091.431.84610117822.3168.3
903 1/2230104.1354910133825.4184.2
1004275116.838.15411152825.4215.9
1255330144.444.56011189828.4266.7
1506355171.447.767132221228.4292.1
2008420222.255.676132731231.75349.2
25010510277.463.5111133431635.1431.8
30012560328.266.7117134002035.1489
35014605360.269.9127134322038.1527
40016685411.276.2140134952041.1603.2
45018745462.382.6152135462044.5654
50020815514.488.9165136102444.5723.9
60024940616101.6184137182450.8838.2


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 900 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/212022.922.332338422.382.6
203/413028.225.435344422.388.9
25115034.928.641352425.4101.6
321 1/416043.728.641564425.4111.1
401 1/21805031.844670428.4123.8
50221562.538.1578105825.4165.1
652 1/224575.441.3648124828.4190.5
80324091.438.15410127825.4190.5
1004290116.844.57011159831.7235
1255350144.450.87911190835279.4
1506380171.455.686132351231.7317.5
2008470222.263.5114132981238.1393.7
25010545277.469.9127133681638.1469.9
30012610328.279.4143134192038.1533.4
35014640360.285.8156134512041.1558.8
40016705411.288.9165135082044.4616
45018785462.3101.6190135652050.8685.8
50020855514.4108210136222053.8749.3
600241040616139.7267137492066.55901.7


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 1500 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/212022.922.332338422.382.6
203/413028.225.435344422.388.9
25115034.928.641352425.4101.6
321 1/416043.728.641564425.4111.1
401 1/21805031.844670428.4123.8
50221562.538.1578105825.4165.1
652 1/224575.441.3648124828.4190.5
80326591.447.77310133825.4190.5
1004310116.8549011162831.7235
1255375144.473.110511197835279.4
1506395171.482.6119132291231.7317.5
2008485222.292.1143132921238.1393.7
25010585277.4108178133681638.1469.9
30012675328.2123.9219134512038.1533.4
35014750360.2133.4241134952041.1558.8
40016825411.2146.1260135522044.4616
45018915462.3162276135972050.8685.8
50020985514.4177.8292136412053.8749.3
600241170616203.2330137622066.55901.7


Dimensions and Weight Chart for ASME/ANSI B16.5 Class 2500 Lap Joint Flanges

DNNPSOverall DiameterInside Diameter(Min.)Thickness of Flange(Min.)Overall LenghtLap RadiusDiameter of HubNumber of BoltsDiameter of Bolt HolesDiameter of Bolt Circle


ABCDRFHIJ
151/213522.930.240343422.388.9
203/414028.231.843351422.395.2
25116034.93548357425.4108
321 1/418543.738.152573428.4130.2
401 1/22055044.560679431.75146
50223562.550.970895828.4171.4
652 1/226575.457.2798114831.75196.8
80330591.466.79210133835.1228.6
1004355116.876.210811165841.1273
1255420144.492.113011203847.8323.8
1506485171.410815213235853.8368.3
2008550222.2127178133051253.8438.2
25010675277.4165.1229133751266.55539.8
30012760328.2184.2254134411273.15619.1

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