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DA
JA
- 1 -
Technical SpecificationMaterial Designation
Surface Roughness Designation (Wetted Area)
Cleaning & Packaging Designation
Tubing Specifications For Micro Butt-Welding Fittings
Designator Material Specification
D 316L VIM+VAR Stainless SteelBar stock meets the standard of ASTM A479, ASME SA479, ASTM A276.Forged body meets the standard of ASTM A182, ASME SA182, ASTM A314.
S 316L VAR or VOD Stainless Steel
L 316L Stainless Steel
6 316 Stainless Steel
Designator Process Description Specification
E EP, electro-polishing Ra5μin (Ra0.13μm)
B BA, mechanical polishing Ra10μin (Ra0.25μm)
M Machining mill finish
● Note : 1. J is Asian design and specification.2. A is American design and specification.3. All data shown as on this catalogue is for the temperature ranging:From 20°F to 100°F (-25°C to 36°C)
Product Category Designation Specification
Mini Butt Weld Fittings UHP DAJA spec, SOP-8-57
Long Butt Weld Fittings UHP DAJA spec, SOP-8-57
OD (inch) OD (mm)Wall Thickness
Manufacturing Standard*J *A
1/4" 6.35 1.0 0.89 JIS G3459/ASTM standard (A270, A269)
3/8" 9.53 1.0 0.09 JIS G3459/ASTM standard (A270, A269)
1/2" 12.70 1.24 1.24 JIS G3459/ASTM standard (A270, A269)
3/4" 19.05 1.24 1.65 JIS G3459/ASTM standard (A270, A269)
1" 25.10 1.65 1.65 JIS G3459/ASTM standard (A270, A269)
Description Page
Technical Specification and designation
Demonstration of Part Number
How to Order A Part
Mini Butt Weld Fittings
(MR) Micro Reducer………..…...…04
(ME) Micro Elbow………..….......…05 (MRE) Micro Reducing Elbow….......05
(MT) Micro Tee……………….….…06
Long Butt Weld Fittings
(MLE) Micro Long Elbow ……….….08 (MLR) Micro Long Reducer …….….09
(MLT) Micro Long Tee ………….…..09
(MRT)Micro Reducing Tee….............…06(MC)Micro Cross ……..............………07(MTE)Micro Tri-Elbow….…............……07
(MLRT)Micro Long R-Tee ….….............10(MLC)Micro Long Cross ……...........…10
(MLRC)Micro Long Reducing Cross …..11
01
02
03
04
08
Contents Micro Butt-Welding Fittings
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DA
JA
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Demonstration of Part NumberProduct
Category Description Product Code EP 5Ra Finish BA 10Ra Finish or Mill Finish
Mini Butt Weld Fittings
Micro Reducer MR MR6-1/2-1/4-SE MR6-1/2-1/4-SB
Micro Elbow ME ME6-1/2-SE ME6-1/2-SB
Micro 45° Elbow MEH MEH6-1/2-SE MEH6-1/2-SB
Micro Tee MT MT6-1/2-SE MT6-1/2-SB
Micro Reducing Tee MRT MRT6-1/2-1/4-SE MRT6-1/2-1/4-SB
Micro Cross MC MC6-1/2-SE MC6-1/2-SB
Micro Tri-Elbow MTE MTE6-1/2-SE MTE6-1/2-SB
Long Butt Weld Fittings
Micro Long Elbow MLE MLE-1/4-LE MLE-1/4-LB
Micro Long Reducer MLR MLR-3/8-1/4-LE MLR-3/8-1/4-LB
Micro Long Tee MLT MLT-1/4-LE MLT-1/4-LB
Micro Long R-Tee MLRT MLRT-3/8-1/4-LE MLRT-3/8-1/4-LB
Micro Long Cross MLC MLC-1/4-LE MLC-1/4-LB
Micro Long Reducing Cross MLRC MLRC-3/8-1/4-LE MLRC-3/8-1/4-LB
How to Order A PartExample A : ME6-1/2-DE-A
ME6 Micro Elbow with (1/4”) 6.40mm orbital welding leg
1/2 tube end dimension is 1/2” OD
DE D: 316L VIM/VAR Material, E: Electro-polishing finish, 5 Ra
A American/Europe Standard
Example B : MLT-1/4-LB-JMLT Micro Long Tee with (3/4”) 19.1mm orbital welding leg
1/4 tube end dimension is 1/4” OD
LB 316L Material, B: BA, mechanical processing finish, 10 Ra
J Asia Standard
Description Part No. Sleeve Length 1
Tube Size 1(in).
Tube Size 2(in).
Sleeve Length 2 Material
Inner Surface Quality
DimensionStandard
Micro Reducer MR6-1/2-1/4-SB 6= 6.40 mm 1/8" 1/8" 11=11.40 mm
D=316L VIM/VAR
E=EP finish, Ra 5
A=American/Europe
StandardMicro Elbow ME6-3/8-SE 11=11.40 mm 1/4" 1/4" 13=12.70 mm
Micro Tee MT6-1/2-SB 13=12.70 mm 3/8" 3/8"S=316L
VARB=BA finish,
Ra 10J=JIS
StandardMicro Long Elbow MLE-1/4-LB 1/2" 1/2"
Micro LongReducer MLR-3/8-1/4-LB 3/4" 3/4" L=316L M=Mill finish
D=DAJAStandardMicro Long
Tee MLT-1/4-LB 1” 1” 6=316
Micro Butt-Welding FittingsMicro Butt-Welding Fittings
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DA
JA
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1/4” (6.35mm) short orbital welding length is provided with a compact design for saving piping space.
Micro Reducer (MR)
Micro Elbow (ME)
Micro Reducing Elbow (MRE)
Mini Butt Weld Fittings
DAJAPart No.
TubeO.D.1
TubeO.D.2
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B B1
Dimensions, in. (mm) psig (bar)
MR6-1/4-1/8-XX 1/4 1/8 0.75(19.1)
0.42(10.4)
0.25(6.4) 6LV-4MW-6-2 4-2 MHM-SSV .035 .028 5100
(351)
MR6-3/8-1/4-XX 3/8 1/4 0.75(19.1)
0.42(10.4)
0.25(6.4) 6LV-6MW-6-4 6-4 MHM-SSV .035 3300
(227)
MR6-1/2-1/4-XX 1/2 1/4 0.75(19.1)
0.42(10.4)
0.25(6.4) 6LV-8MW-6-4 8-4 MHM-SSV .049 .035 3700
(254)
MR6-1/2-3/8-XX 1/2 3/8 0.75(19.1)
0.42(10.4)
0.25(6.4) 6LV-8MW-6-6 8-6 MHM-SSV .049 .035 3300
(227)
DAJAPart No.
TubeO.D
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B F
Flat L
Dimensions, in. (mm) psig (bar)
ME6-1/8-XX 1/8 0.56(14.2)
0.25(6.4) 5/16 0.41
(10.4) 6LV-2MW-9 2-2 MEM-SSV .028 8500(585)
ME6-1/4-XX 1/4 0.56(14.2)
0.25(6.4) 5/16 0.41
(10.4) 6LV-4MW-9 4-4 MEM-SSV .035 5100(351)
ME6-3/8-XX 3/8 0.69(17.5)
0.25(6.4) 7/16 0.47
(11.9) 6LV-6MW-9 6-6 MEM-SSV .035 3300(227)
ME6-1/2-XX 1/2 0.81(20.6)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-9 8-8 MEM-SSV .049 3700(254)
DAJAPart No.
TubeO.D.1
TubeO.D.2
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L
Dimensions, in. (mm) psig(bar)
MRE6-3/8-1/4-XX 3/8 1/4 0.69(17.5)
0.25(6.4) 7/16 0.47
(11.9) 6LV-6MW-9-4 6-4MEM-SSV .035
3300(227)
MRE6-1/2-1/4-XX 1/2 1/4 0.81(20.6)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-9-48-4
MEM-SSV.049 .035
3700(254)
MRE6-1/2-3/8-XX 1/2 3/8 0.81(20.6)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-9-68-6
MEM-SSV.049 .035
3300(227)
Chamfered body block helps prevent damage to other components during system fabrication or maintenance.
Marking identifies brand, typematerial, and productionlot number (heat code tracing)
EP Grade, electro-polish finish with 5 µin. (0.13 µm) Ra surface finish plus UHP cleaning and packaging. Standard BA grade surface finish is 10 µin. (0.25 µm) Ra.
Radius junctionallows smooth flow transition andeliminates pockets and entrapment zones.
Square,burr-free tube
weld endsenhance alignment, maintain
tube wall uniformity, and promote weld repeatability.
Mini Butt Weld FittingsMini Butt Weld Fittings
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DA
JA
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Micro Tee (MT) Micro Cross (MC)
Micro Reducing Tee (MRT)Micro Tri-Elbow (MTE)
DAJAPart No.
TubeO.D.
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L
Dimensions, in. (mm) psig(bar)
MT6-1/8-XX 1/8 0.82(20.8)
0.25(6.4) 5/16 0.41
(10.4) 6LV-2MW-3 2-2-2 MJM-SSV .028 8500(585)
MT6-1/4-XX 1/4 0.82(20.8)
0.25(6.4) 5/16 0.41
(10.4) 6LV-4MW-3 4-4-4 MJM-SSV .035 5100(351)
MT6-3/8-XX 3/8 0.94(23.9)
0.25(6.4) 7/16 0.47
(11.9) 6LV-6MW-3 6-6-6 MJM-SSV .035 3300(227)
MT6-1/2-XX 1/2 1.06(26.9)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-3 8-8-8 MJM-SSV .049 3700(254)
DAJAPart No.
TubeO.D.1
TubeO.D.2
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L
Dimensions, in. (mm) psig(bar)
MRT6-3/8-1/4-XX 3/8 1/4 0.94(23.9)
0.25(6.4) 7/16 0.47
(11.9)6LV-6MW-3-
6-46-6-4 MJM-SSV
.0353300(227)
MRT6-1/2-1/4-XX 1/2 1/4 1.06(26.9)
0.25(6.4) 9/16 0.53
(13.5)6LV-8MW-3-
8-48-8-4 MJM-
SSV0490490353700(254)
MRT6-1/2-3/8-XX 1/2 3/8 1.06(26.9)
0.25(6.4) 9/16 0.53
(13.5)6LV-8MW-3-
8-68-8-6 MJM-
SSV0490490353300(227)
DAJAPart No.
TubeO.D.
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L
Dimensions, in. (mm) psig(bar)
MC6-1/8-XX 1/8 0.82(20.8)
0.25(6.4) 5/16 0.41
(10.4) 6LV-2MW-4 2 MKM-SSV .028 8500(585)
MC6-1/4-XX 1/4 0.82(20.8)
0.25(6.4) 5/16 0.41
(10.4) 6LV-4MW-4 4 MKM-SSV .035 5100(351)
MC6-3/8-XX 3/8 0.94(23.9)
0.25(6.4) 7/16 0.47
(11.9) 6LV-6MW-4 6 MKM-SSV .035 3300(227)
MC6-1/2-XX 1/2 1.06(26.9)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-4 8 MKM-SSV .049 3700(254)
DAJAPart No.
TubeO.D.
WallThickness
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B F
Flat L
Dimensions, in. (mm) psig(bar)
MTE6-1/4-XX 1/4 0.035 0.56(14.2)
0.25(6.4) 5/16 0.41
(10.4) 6LV-4MW-91 4-4-4 M0JM-SSV .035
5100(351)
MTE6-3/8-XX 3/8 0.035 0.69(17.5)
0.25(6.4) 7/16 0.47
(11.9) 6LV-6MW-91 6-6-6 M0JM-SSV .035
3300(227)
MTE6-1/2-XX 1/2 0.049 0.81(20.6)
0.25(6.4) 9/16 0.53
(13.5) 6LV-8MW-91 8-8-8 M0JM-SSV .049
3700(254)
Mini Butt Weld FittingsMini Butt Weld Fittings
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DA
JA
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3/4” (19.05mm) long extended orbital welding length provides easier and quicker set-up for w/orbital welder. Forged fitting body or machined fitting body is designed with compact configuration for reducing piping weight.
Long Butt Weld Fittings
Micro Long Elbow (MLE)
DAJAPart No.
TubeO.D.
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingB F
Flat L
Dimensions, in. (mm) psig(bar)
MLE-1/4-XX 1/4 0.75(19.1) 7/16 1.23
(31.2) 316L-4TB7-9 -5100(351)
MLE-3/8-XX 3/8 0.75(19.1) 7/16 1.20
(30.5) 316L-6TB7-9 -3300(227)
MLE-1/2-XX 1/2 0.75(19.1) 11/16 1.34
(34.0) 316L-8TB7-9 -3700(254)
MLE-3/4-XX 3/4 0.75(19.1) 15/16 1.46
(37.1) 316L-12TB7-9 -2400(165)
Micro Long Reducer (MLR)
Micro Long Tee (MLT)
DAJAPart No.
TubeO.D.1
TubeO.D.2
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B
Dimensions, in. (mm) psig(bar)
MLR-3/8-1/4-XX 3/8 1/4 1.50(38.1)
0.75(19.1) 316L-6TB7-6-4 -
3300(227)
MLR-1/2-1/4-XX 1/2 1/4 1.50(38.1)
0.75(19.1) 316L-8TB7-6-4 -
3700(254)
MLR-1/2-3/8-XX 1/2 3/8 1.50(38.1)
0.75(19.1) 316L-8TB7-6-6 -
3300(227)
MLR-3/4-1/2-XX 3/4 1/2 1.50(38.1)
0.75(19.1) 316L-12TB7-6-8 -
2400(165)
MLR-1-1/2-XX 1 1/2 1.50(38.1)
0.75(19.1) 316L-16TB7-6-8 -
2400(165)
MLR-1-3/4-XX 1 3/4 1.50(38.1)
0.75(19.1) 316L-16TB7-6-12 -
2400(165)
DAJAPart No.
TubeO.D.
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L
Dimensions, in. (mm) psig(bar)
MLT-1/4-XX 1/4 2.46(62.5)
0.75(19.1) 7/16 1.23
(31.2) 316L-4TB7-3 -5100(351)
MLT-3/8-XX 3/8 2.40(61.0)
0.75(19.1) 7/16 1.20
(30.5) 316L-6TB7-3 -3300(227)
MLT-1/2-XX 1/2 2.68(68.1)
0.75(19.1) 11/16 1.34
(34.0) 316L-8TB7-3 -3700(254)
MLT-3/4-XX 3/4 2.91(73.9)
0.75(19.1) 15/16 1.46
(37.1) 316L-12TB7-3 -2400(165)
EP Grade, electro-polish finish with 5 µin. (0.13 µm) Ra surface finish plus UHP cleaning and packaging. Standard BA grade surface finish is 10 µin. (0.25 µm) Ra.
Tube ends are machined with a squareface and corners to enhance alignmentand maintain tube wall uniformity.
Precisely finished diametermatches tube diameter.
Standard surface finish is 10 µin average.(0.25 µm) Ra.
Long Butt Weld FittingsLong Butt Weld Fittings
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DA
JA
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Micro Long Cross (MLC)
DAJAPart No.
TubeO.D.1
TubeO.D.2
DimensionsInterchange
Part No.1Interchange
Part No.2Pressure
RatingA B FFlat L L1
Dimensions, in. (mm) psig(bar)MLRT-3/8-
1/4-XX 3/8 1/4 2.39(60.7)
0.75(19.1) 7/16 1.20
(30.5)1.23
(31.2)316L-6TB7-
3-6-4 -3300(227)
MLRT-1/2-1/4-XX 1/2 1/4 2.67
(67.8)0.75
(19.1) 11/16 1.34(34.0)
1.34(34.0)
316L-8TB7-3-8-4 -
3700(254)
MLRT-1/2-3/8-XX 1/2 3/8 2.67
(67.8)0.75
(19.1) 11/16 1.34(34.0)
1.35(34.3)
316L-8TB7-3-8-6 -
3300(227)
MLRT-3/4-3/8-XX 3/4 3/8 2.91
(73.9)0.75
(19.1) 15/16 1.46(37.1)
1.35(34.3)
316L-12TB7-3-12-6 -
2400(165)
MLRT-3/4-1/4-XX 3/4 1/4 2.91
(73.9)0.75
(19.1) 15/16 1.46(37.1)
1.48(37.6)
316L-12TB7-3-12-4 -
2400(165)
DAJAPart No.
TubeO.D.
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B F
Flat L
Dimensions, in. (mm) psig(bar)
MLC-1/4-XX 1/4 2.45(62.2)
0.75(19.1) 7/16 1.23
(31.2) 316L-4TB7-4 -5100(351)
MLC-3/8-XX 3/8 2.39(60.7)
0.75(19.1) 7/16 1.20
(30.5) 316L-6TB7-4 -3300(227)
MLC-1/2-XX 1/2 2.61(66.3)
0.75(19.1) 11/16 1.34
(34.0) 316L-8TB7-4 -3700(254)
Micro Long R-Tee (MLRT) Micro Long Reducing Cross (MLRC)
Long Butt Weld FittingsLong Butt Weld Fittings
DAJAPart No.
TubeO.D.1
WallThickness
1
TubeO.D.2
WallThickness
2
Dimensions InterchangePart No.1
InterchangePart No.2
PressureRatingA B F
Flat L
Dimensions, in. (mm) psig(bar)
MLRC-3/8-1/4-
XX3/8 0.035 1/4 0.035 2.39
(60.7)0.75
(19.1) 7/16 1.20(30.5) - -
3300(227)
DA
JA MEMO
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