Fittings : Buttweld JIS B2311-1982

This standard specifies steel butt-welding pipe fittings which are generally used for ordinary piping for
steam, water, oil, gas, etc. at lower pressures.

MATERIALS
The fittings to this standard are made from materials in accordance with JIS G3452.

PRESSURE RATINGS
The fittings are free from leakage at hydrostatic pressue up to maximum of 2,5 Mpa.

WELDING END PREPARATIONS
Bevel dimensions and tolerances conform to those shown in the diagram. Fittings with a basic thickness below 4mm have plain unbeveeled ends.

90° Elbows – Long Radius

90° Elbows – Long Radius to JIS B2311-82

Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
GRADE SGPCentre to End AMass (approx.)
SGP [kg]
Inside diameter
[mm]
Wall Thickness
T
1521,716,12,838,10,08
2027,221,62,838,10,10
2534,027,63,238,10,15
3242,735,73,547,60,25
4048,641,63,557,20,35
5060,552,93,876,20,63
6576,367,94,295,31,12
8089,180,74,2114,31,58
90101,693,24,2133,42,11
100114,3105,34,5152,42,91
125139,8130,84,5190,54,49
150165,2155,25,0228,67,09
200216,3204,75,8304,814,40
200219,1207,55,8304,814,40
250267,4254,26,6381,025,40
250273,0259,86,6381,025,40
300318,5304,76,9457,238,10
300323,8310,06,9457,238,10
350355,6339,87,9533,456,70
400406,4390,67,9609,674,30
450457,2441,47,9685,894,20
500508,0492,27,9762,0117,00
600609,6--914,4-


90° Elbows – Short Radius

90° Elbows – Short Radius to JIS B2311-82

Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
GRADE SGPCentre to End AMass (approx.)
90EL SGP [kg]
Inside Diam. IDWall Thickness T
2534,027,63,225,40,10
3242,735,73,531,80,17
4048,641,63,538,10,23
5060,552,93,850,80,42
6576,367,94,263,50,74
8089,180,74,276,21,05
90101,693,24,288,91,41
100114,3105,34,5101,61,94
125139,8130,84,5127,02,99
150165,2155,25,0152,44,73
200216,3204,75,8203,29,61
200219,1207,55,8203,29,61
250267,4254,26,6254,016,90
250273,0259,86,6254,016,90
300318,5304,76,9304,825,40
300323,8310,06,9304,825,40
350355,6339,87,9355,637,80
400406,4390,67,9406,4-


45° Elbows

45° Elbows – Long Radius to JIS B2311-82

Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
GRADE SGPABMass
(approx.)
90EL SGP
[kg]
Inside
Diam. ID
Wall
Thickness T
1521,716,12,838,115,80,04
2027,221,62,838,115,80,05
2534,027,63,238,115,80,07
3242,735,73,547,619,70,13
4048,641,63,557,223,70,18
5060,552,93,876,231,60,32
6576,367,94,295,339,50,56
8089,180,74,2114,347,30,79
90101,693,24,2133,455,31,06
100114,3105,34,5152,463,11,46
125139,8130,84,5190,578,92,25
150165,2155,25,0228,694,73,54
200216,3204,75,8304,8126,27,20
200*219,1207,55,8304,8126,27,20
250267,4254,26,6381,0157,812,70
250*273,0259,86,6381,0157,812,70
300318,5304,76,9457,2189,419,00
300*323,8310,06,9457,2189,419,00
350355,6339,87,9533,4220,928,40
400406,4390,67,9609,6252,537,10
450457,2441,47,9685,8284,147,10
500508,0492,27,9762,0315,658,30
600609,6--914,4378,7-


Welded Reducers

Concentric Welded Reducers to JIS B2311-82


Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
Length L
[mm]
Mass (approx.)
SGP [kg]
20 x 1527,2 x 21,738,10,057
25 x 2034,0x 27,250,80,110
25 x 1534,0 21,750,80,100
32 x 2542,7 x 34,050,80,154
32 x 2042,7 x 27,250,80,140
32 x 1542,7 x 21,750,80,129
40 x 3248,6 x 42,763,50,232
40 x 2548,6 x 34,063,50,209
40 x 2048,6 x 27,263,50,191
50 x 4060,5 x 48,676,20,364
50 x 3260,5 x 42,776,20,344
50 x 2560,5 x 34,076,20,315
50 x 2060,5 x 27,276,20,293
65 x 5076,3 x 60,588,90,594
65 x 4076,3 x 48,688,90,543
65 x 3276,3 x 42,788,90,518
65 x 2576,3 x 34,088,90,482
80 xz 6589,1 x 76,388,90,725
80 x 5089,1 x 60,588,90,658
80 x 4089,1 x 48,688,90,611
80 x 3289,1 x 42,788,90,587
90 x 80101,6 x 89,1101,60,961
90 x 65101,6 x 76,3101,60,899
90 x 50101,6 x 60,5101,60,826
90 x 40101,6 x 48,6101,60,771
100 x 90114,3 x 101,6101,61,170
100 x 80114,3 x 89,1101,61,100
100 x 65114,3 x 76,3101,61,040
100 x 50114,3 x 60,532,200,967
125 x 100139,8 x 114,3127,01,740
125 x 90139,8 x 101,6127,01,650
125 x 80139,8 x 89,1127,01,580

Eccentric Welded Reducers to JIS B2311-82


Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
Length L
[mm]
Mass (approx.)
SGP [kg]
125 x 65139,8 x 76,3 127,01,50
150 x 125165,2 x 139,8139,72,55
150 x 100165,2 x 114,3139,72,36
150 x 90165,2 x 101,6139,72,27
150 x 80165,2 x 89,1139,72,18
150 x 65165,2 x 76,3139,72,09
200 x 150219,1 x 165,2152,44,17
200 x 125219,1 x 139,8152,43,87
200 x 100219,1 x 114,3152,43,67
200 x 90219,1 x 101,6152,43,57
250 x 200273,0 x 219,1177,86,87
250 x 150273,1 x 165,2177,86,32
250 x 125273,0 x 139,8177,86,06
300 x 250323,8 x 273,0203,29,97
300 x 200323,8 x 219,1203,29,29
300 x 150323,8 x 165,2203,28,69
300 x 125323,8 x 139,8203,28,39
350 x 300355,6 x 323,8330,221,20
350 x 250355,6 x 273,0330,219,70
350 x 200355,6 x 219,1330,218,30
400 x 350406,4 x 355,6355,620,90
400 x 300406,4 x 323,8355,619,80
400 x 250406,4 x 273,0355,618,20
450 x 400457,2 x 406,4381,026,30
450 x 350457,2 x 355,6381,024,50
450 x 300457,2 x 323,8381,023,30
500 x 450508,0 x 457,2508,040,00
500 x 400508,0 x 406,4508,037,60
500 x 350508,0 x 355,6508,035,30
600 x 500609,6 x 508,0508,0-
600 x 450609,6 x 457,2508,0-

Tees

Equal Tees to JIS B2311-82

Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
GRADE SGPRun ABranch BMass
(approx.)
SGP [kg]
Inside diameter mmWall Thickness T
1521,716,12,825,425,40,085
2027,221,62,828,628,60,122
2534,027,63,238,138,10,236
3242,735,73,547,647,60,441
4048,641,63,557,257,20,573
5060,552,93,863,563,50,851
6576,367,94,276,276,21,42
8089,180,74,285,785,71,87
90101,693,24,295,395,32,37
100114,3105,34,5104,8104,83,13
125139,8130,84,5123,8123,84,53
150165,2155,25,0142,9142,96,84
200219,1207,55,8177,8177,812,80
250273,0259,86,6315,9215,921,8
300323,8310,06,9254,0254,032,0
350355,6339,87,9279,4279,444,7
400406,4390,67,9304,8304,855,2
450457,2441,47,9342,9342,970,00
500508,0492,27,9381,0381,086,6

Welded Caps

Welded Caps to JIS B2311-82

Nominal
Pipe Size
[mm]
Outside
Diameter
OD [mm]
GRADE SGPLength AMass (approx.)
SGP [kg]
Inside diameter mmWall Thickness T
5060,552,93,838,10,228
6576,367,94,238,10,339
8089,180,74,250,80,507
100114,3105,34,563,50,877
125139,8130,84,576,21,29
150165,2155,25,088,91,99
200219,1207,55,8101,63,61
250273,0259,86,6127,06,33
300323,8310,06,9152,49,43
350355,6339,87,9165,113,2
400406,4390,67,9177,816,6
450457,2441,47,9203,221,2
500508,0492,27,9228,626,4