BS4504 standard flange drilling details

PDF: BS 4504 Standard Flange Facings Types Welding Ends of neck flange dimension and weight

All dimensions are in "mm" and All weights are in "kg" unless noted otherwise specified.
you may also check non standard sizes flange weight online calculation,flange surface area online calculation,flange surface volume online calculation from our flange calculator tool  and pipe fitting calculator.

The whole weight and dimension list of  flange directory Flange-dimension-and-weight

BS 4504 Standard Flange Drilling Dimensins and Details.

DNPNABCBolt Holes
mmmmmmNo.Bolt size
102.5 & 67550114M10
10,16,9060144M12
152.5 & 68055114M10
10 & 169565144M12
25 & 409565144M12
202.5 & 69065114M10
10 & 1610575144M12
25 &4010575144M12
252.5 & 610075114M10
10 & 1611585144M12
25&4011585144M12
322.5 & 612090144M12
10 & 16140100184M16
25 & 40140100184M16
402.5 & 6130100144M12
10 & 16150110184M16
25 &40150110184M16
502.5 & 6140110144M12
10 & 16165125184M16
25 &40165125184M16
652.5 & 6160130144M12
10 & 16185145184/8M16
25 & 40185145188M16
802.5 & 6190150184M16
10 & 16200160188M16
25 &40200160188M16
1002.5 & 6210170184M16
10 & 16220180188M16
25 &40235190228M20
1252.5 & 6240200188M16
10 & 16250210188M16
25 & 40270220268M24
1502.5 & 6265225188M16
10 & 16285240228M20
25 & 40300250268M24
2002.5 & 6320280188M16
10 & 16340295228/12M20
253603102612M24
403753203012M27
2502.5 & 63753351812M16
103953502212M20
164053552612M24
254253703012M27
404503853312M30
3002.5 & 64403952212M20
104454002212M20
164604102612M24
254854303016M27
405154503316M30
DNPNABCBolt Holes
mmmmmmNo.Bolt size
3502.5 & 64904452212M20
105054602216M20
165204702616M24
255554903316M30
405805103616M33
4002.5 & 65404952216M20
105655152616M24
165805253016M27
256205503616M33
406605853916M36
4502.5 & 65955502216M20
106155652620M24
166405853020M27
256706003620M33
406856103920M36
5002.5 & 66456102220M20
106706202620M24
167156503320M30
257306603620M33
407556704220M39
6002.5 & 67557052620M24
107807253020M27
168407703620M33
258457703920M36
408907954820M45
7002.5 & 68608102624M24
108958403024M27
169108403624M33
259608754224M39
8002.5 & 69759203024M27
1010159503324M30
1610259503924M36
2510859904824M45
9002.5 & 6107510203024M27
10111510503328M30
16112510503928M36
25118510904828M45
10002.5 & 6117511203028M27
10123011603628M33
16125511704228M39
25132012105628M52
12002.5137513203032M27
6140513403332M30
10145513803932M36
16148513904832M45
25153014205632M52
14002.5157515203036M27
6163015603636M33
10167515904236M39
16168515904836M45
25175516406236M56
16002.5179017303040M27
6183017603640M33
10191518204840M45
16193018205640M52
25197518606240M56
18002.5199019303044M27
6204519703944M36
10211520204844M45
16213020205644M52
25218520707044M64
20002.5219021303048M27
6226521804248M39
10232522304848M45
16234522306248M56
25242523007048M64

 

BS 4504 Standard Flanges Type code,PN range and Marking Requirements.

 

Summary of flanges covered by BS 4504 : Section 3.1.

Code No.DescriptionPN RangeDN Range
101Plate flange for welding(see page 8-65)PN 2.5DN 10 to DN 2000
PN 6, 10, 16, 25, 40DN 10 to DN 600
102Loose plate flange with weld-on plate collar or for lapped pipe end (Weld-on plate collar = Code 1321 Lapped pipe end = Code 1331)PN 6, 10, 16, 25, 40DN 10 to DN 600
104Loose plate flange with weld-neck collar (Weldneck collar = Code 1341)PN 6, 10, 16, 25, 40DN 10 to DN 600
PN 2.5, 6DN 10 to DN 2000
105Blank flange (see page 8-70)PN 10, 16DN 10 to DN 1200
PN 25, 40DN 10 to DN 600
PN 2.5, 6, 10, 16DN 10 to DN 20002
111Weld-neck flange (see page 8-66)PN 25DN 10 to DN 1000
PN 40DN 10 to DN 600
112Hubbed slip-on flange for welding(see page 8-68)PN 6DN 10 to DN 300
PN 10, 16, 25, 40DN 10 to DN 600
113Hubbed threaded flange (see page 8-69)PN 6, 10, 16, 25, 40DN 10 to DN 150
121Integral flangePN 6, 10, 16, 25DN 10 to DN 2000
PN 40DN 10 to DN 600

Note:

-Flanges > DN 2000, are not covered in this summary.

-Dimensions: Nominal sizes, DN followed by a numerical designation of size (a convenient round number for reference purposes), are used as defined in ISO 6708.

-Pressure Ratings: Nominal pressures, i.e. PN followed by a numerical designation of size (a convenient round number for reference purposes), are used as defined in ISO 7268.

1 Dimensions for these flanges are not covered in this summary.

2 The DN range for weld neck flanges extends to DN 4000 for PN 2.5, to DN 3600 for PN 6, and to DN 3000 for PN 10.

Designations/Marking

Marking. All flanges are marked with BS number, code number,PN,DN,material designation,manufacturers name or trade mark,cast number or melt identification,thread identification,An example follows:

BS 4504/111/B – PN 16 -DN 400 -B4 – XXX – 12345.

BS-4504-FLANGE-MARKING-REQUIREMENT

Cast Number or melt identification Manufacturer’s name or trade mark Material designation Nominal size, DN

Nominal Pressure, PN Flange face type (A – H) Flange code number British standard number

 

Our products like flanges are packaged to make sure that there’s no damage throughout transit. Just in case of exports, customary export packaging is completed in wooden boxes or cases. All flanges are marked with Trademark (Company’s LOGO), Grade, Size and Lot No. On requests we can do custom marking on our products.

TEST CERTIFICATES

Manufacturer Test Certificate as per EN 10204-3.1, EN 10204-3.2, Raw Materials Certificate, NABL approved Lab Test Report, 100% Radiography Test Report, Third Party Inspection Report etc.

● Production Capacity & Purchase Details
1. Supply Flange Dimension DN15 - DN2000 (1/2" - 120"), Forged Flange.
2. Material Carbon Steel: CT20, C22.8, RST37.2, S235JR, P235GH, P245GH, P250GH, ASTM A105 etc.
3. Material Stainless Steel: ASTM A182 F304 (1.4306), F304L(1.4307), F316(1.4404), F316L(1.4404), F321(1.4541) etc.
4. Flanges surface: Anti Rust Oil, Black Paint, Yellow Paint Coating, Hot Dipped Galvanized, Cold Galvanized ,FBE epoxy etc.
5. Quality Guarantee: EN10204 3.1 Certificate, NDE report.6.Stock below 24inch flange for all pressure class7.Provide ASME VIII design for 64in flange, 68in flange,72in flange,80in flange,88in flange,96in flange,100in flange,120in flange,etc

All   DIN  Flange dimension and weight list

All BS flange standard list

BS 4504 Standard Flanges Dimensions and Tolerances
BS 4504 Standard Flange Facings Types,Welding Ends of neck flange
BS 4504 Standard Flange Flange Facing Dimensions
BS 4504 Standard Flange Drilling Details and Dimensions.
BS 4504 Standard Code 101 Plate Flange and Dimensions
BS 4504 Standard Code 111 Weld Neck Flange and Dimensions
BS 4504 Standard Code 112 Slip On Flange and Dimensions
BS 4504 Standard Code 113 Threaded Flange
BS 4504 Standard Code 105 Blank Flange (Blind Flange)
BS 3293 Standard Welding Neck, Slip On Flange (150lb-600lb)
BS 10 Standard Table D, Table E, Table F, Table H Flange

All the flange standard list

ANSI/ASME FLANGE STANDARDEN FLANGE STANDARDBS FLANGE STANDARD
DIN FLANGE STANDARDJIS FLANGE STANDARDUNI FLANGE STANDARD
API 6A/6B/6BX FLANGE STANDARDAWWA FLANGE STANDARDKS FLANGE STANDARD
GOST/ГОСТ FLANGE STANDARDISO FLANGE STANDARDAS FLANGE STANDARD
SANS/SABS FLANGE STANDARDLONG WELD NECK FLANGEASME VIII FLANGE