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Fittings for Steel & Copper Pipes（Connection Shape：Union）

A copper pipe / steel pipe fitting is a fitting made of the same material as the pipe used when piping copper pipes or steel pipes. The material of copper pipe fittings used for water supply pipes and general refrigerant pipes is mainly brass, and the steel pipe fitting material suitable for transporting oil, air, gas, etc. is carbon steel. Some products are cadmium-free and lead-free hot-dip galvanized, and others are surface-treated with epoxy resin, which has excellent water and corrosion resistance. In addition to unions, sockets, and reducers that connect straight pipes, elbows that connect pipes by bending them 90 degrees, tees that branch into a T-shape, crosses that branch into four sides, etc. are available. Connections include screw-in connections and welding, as well as ring connections, abacus ball ring connections, etc. that can reduce the piping process. Note that the outer diameter of pipes and fittings is displayed in two types, millimeters and inches, and the outer diameter size may differ between JIS piping and ANSI piping.

Connection Shape

Union
Union, Inside- Outside Thread
Elbow
Tee
Cross

24 items

: 30; 45; 60

Unions - Compression Tube Fitting, Brass, RS Series

Asoh

A ring joint for connecting copper pipes to each other. No dedicated tools required.

Volume Discount
Days to Ship: 8 Days or more
Reducer - Compression Tube Fitting, R Series

Fuji Special

The product features a structure/functionality which allows for high tolerance to both external and internal high temperature/heat and durability against vibration, shock and rough handling.

Volume Discount
Days to Ship: 9 Days or more
Unions - Bulkhead, Compression Tube Fitting, JA Series

Fuji Special

The product features a structure/functionality that allows for a high tolerance to both external and internal high temperatures/heat, and durability against vibration, shock, and harsh use.

Volume Discount
Days to Ship: 9 Days or more
Unions - Bulkhead, Welded, Compression Tube Fitting, NW Series

Fuji Special

The product features a structure/functionality which allows for high tolerance to both external and internal high temperature/heat and durability against vibration, shock and rough handling.

Volume Discount
Days to Ship: 8 Days or more
Unions - Bulkhead, Compression Tube Fitting, GU1 Series

Fuji Special

B-type high-pressure fitting for copper tubes. Various types available with fast delivery.

Volume Discount
Days to Ship: 9 Days or more
Flare Nut - Brass, FN series

Inaba Denki

[Features]
· Compatible with refrigerants (R410A, R407C, R134a, R404A, R507A, R22, R32)

Volume Discount
Days to Ship: 8 Days or more
Coupler - Rubber Packing Seal with Outer Ring, SLHPS Series

Hitachi Metals

The mechanical fitting can be easily connected by cutting the pipe and tightening the nut. The edges of the ring of the high-power lock engage with the pipe for a strong connection.

Volume Discount
Days to Ship: 10 Days or more
Coupler - Rubber Packing Seal with Outer Ring, KHPS Series

Hitachi Metals

Cut the pipe and tighten the nut for easy connection. The high power joint has no lock ring and its rubber packing is pressed against the outer surface of the pipe, so it can expand and contract slightly (separate fall-out prevention required).

Volume Discount
Days to Ship: 8 Days or more
Unions - Bulkhead, Brass, Flare Fitting, FUB Series

Koyo

Uses cadmium-free brass material.

Volume Discount
Days to Ship: 8 Days or more
Unions - Expander/Reducer, Compression Tube Fitting, Brass, RE Series

Asoh

A ring joint for connecting copper tubes of different sizes.

Volume Discount
Days to Ship: 8 Days or more
Unions - Compression Tube Fitting with Lock Nuts, Brass, RW Series

Asoh

A ring joint for connecting copper pipes through walls or panels.

Volume Discount
Days to Ship: 11 Days or more
Straight Connector - Flare Tube Fitting, Brass, Double, FS Series

Asoh

A flare joint for connecting copper pipes together.

Volume Discount
Days to Ship: 8 Days or more
Straight Connector - Expander/Reducer, Flare Tube Fitting, Brass, Double, FE Series

Asoh

This is a flare joint which is used to connect two copper pipes of different sizes.

Volume Discount
Days to Ship: 8 Days or more
Unions - Compression Tube Fitting Both Ends

Fuji Special

The product features a structure/functionality which allows for high tolerance to both external and internal high temperature/heat and durability against vibration, shock and harsh use.

Volume Discount
Days to Ship: 8 Days or more
Unions - Compression Tube Fitting, UW Series

Fuji Special

The product features a structure/functionality which allows for high tolerance to both external and internal high temperature/heat and durability against vibration, shock and rough handling.

Volume Discount
Days to Ship: 9 Days or more
Straight Connector - Bite Fitting, GU Series

Fuji Special

B-type fitting for copper tubes usable at high pressures. Various types are available with quick delivery.

Volume Discount
Days to Ship: 10 Days or more
Unions - Bite Fitting, GT-1 Series

Fuji Special

B-type high-pressure fitting for copper tubes. Various types available with fast delivery.

Volume Discount
Days to Ship: 8 Days or more
Unions - Bulkhead, Bite Fitting, GU-2 Series

Fuji Special

B-type flareless fitting for copper tubes usable at high pressures. Various types are available with a short delivery time.

Volume Discount
Days to Ship: 9 Days or more
Unions - Bulkhead Reducer, Bite Fitting, GUR Series

Fuji Special

B-type high-pressure fitting for copper tubes. Various types available with fast delivery.

Volume Discount
Days to Ship: 8 Days or more
Unions - Biting Fitting, KUA Series

Ihara Science

The CE series of biting fittings were developed for hydraulic equipment subjected to up to 13.7 MPa of pressure.

Volume Discount
Days to Ship: 8 Days or more
Unions - Check Valve, High-Pressure, Bite Fitting, KZU Series

Ihara Science

A fitting for high-pressure piping up to medium diameter for general hydraulic pressure (13.7 MPa~). Pipe bending is also possible without the need for screw machining, welding, flaring, and brazing.

[Features]
· Flareless type check fittings with in-built check functions display the following characteristics.
· Lightweight and compact thanks to their integrated seal-free structure with no unnecessary screw connections .
▪ As pipe connections are flareless, screw machining, welding, and flaring are not required when piping. Therefore, man-hours and costs reduced dramatically.

Volume Discount

CAD ：

3D
Days to Ship: 28 Days or more
Unions - High-Pressure, Bite Fitting, KUA Series

Ihara Science

[Features]
- A fitting for high-pressure piping at up to medium diameter, working a general hydraulic pressures (13.7 MPa~).- No screw machining, welding, flaring, and brazing is necessary; pipes can also be bent.

Volume Discount

CAD ：

3D
Days to Ship: 8 Days or more
Unions - Steel Pipe Fitting, Epoxy Resin Coated or Zinc Plated, Female NPT

CK Metals

•Material: Cast Iron
•Connection Type - Equal Diameter Tube: Sockets
•Type: Fitting
•Fitting Type: Mechanical Joint
•Compatible Pipe Type: Steel pipe (general)

Volume Discount
Days to Ship: 11 Days or more
Unions - Brass, Pipe Fitting, Female BSPT, Class 125

USA Industrials

Brass Female Union Pipe is an excellent choice for use for both hot and cold water. Fittings that comply with NSF/ANSI 61 and NSF/ANSI 372 low-lead standards and can be used with potable water. These compression fittings have specific water pressure applications; class 125 in low-pressure applications, class 250 in medium-pressure applications, and compression/instrumentation fittings in high-pressure applications.

Days to Ship: 13 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	10 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	11 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	10 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	28 Days or more

Days to Ship:	8 Days or more

Days to Ship:	11 Days or more

Days to Ship:	13 Days or more


Brand
Product Series
CAD
Days to Ship
Material
Surface Treatment
Applicable Fluid
Max. Operating Pressure
Connection Type
Connection Shape
Thread Size 1(inch)
Thread Size 1(mm)
Connection Thread Type
Types
Types of Related components
Fitting type
Applicable Pipe Type
Applicable Tube Size Type
Tube Material
Thread Nominal
Nominal A 1
Nominal 1(inch)
Applicable Pipe O.D. 1(mm)
Nominal A 2 [In case of different diameters](mm)
Thread Size 2(inch)
Thread Size 2(mm)
Nominal 2 [In the case of different diameters](inch)
Applicable Pipe O.D. 2 [In the case of different diameters](mm)
Divisions of Max. Operating Pressure(MPa)


Brand	Asoh	Fuji Special	Fuji Special	Fuji Special	Fuji Special	Inaba Denki	Hitachi Metals	Hitachi Metals	Koyo	Asoh	Asoh	Asoh	Asoh	Fuji Special	Fuji Special	Fuji Special	Fuji Special	Fuji Special	Fuji Special	Ihara Science	Ihara Science	Ihara Science	CK Metals	USA Industrials
Product Series	Unions - Compression Tube Fitting, Brass, RS Series	Reducer - Compression Tube Fitting, R Series	Unions - Bulkhead, Compression Tube Fitting, JA Series	Unions - Bulkhead, Welded, Compression Tube Fitting, NW Series	Unions - Bulkhead, Compression Tube Fitting, GU1 Series	Flare Nut - Brass, FN series	Coupler - Rubber Packing Seal with Outer Ring, SLHPS Series	Coupler - Rubber Packing Seal with Outer Ring, KHPS Series	Unions - Bulkhead, Brass, Flare Fitting, FUB Series	Unions - Expander/Reducer, Compression Tube Fitting, Brass, RE Series	Unions - Compression Tube Fitting with Lock Nuts, Brass, RW Series	Straight Connector - Flare Tube Fitting, Brass, Double, FS Series	Straight Connector - Expander/Reducer, Flare Tube Fitting, Brass, Double, FE Series	Unions - Compression Tube Fitting Both Ends	Unions - Compression Tube Fitting, UW Series	Straight Connector - Bite Fitting, GU Series	Unions - Bite Fitting, GT-1 Series	Unions - Bulkhead, Bite Fitting, GU-2 Series	Unions - Bulkhead Reducer, Bite Fitting, GUR Series	Unions - Biting Fitting, KUA Series	Unions - Check Valve, High-Pressure, Bite Fitting, KZU Series	Unions - High-Pressure, Bite Fitting, KUA Series	Unions - Steel Pipe Fitting, Epoxy Resin Coated or Zinc Plated, Female NPT	Unions - Brass, Pipe Fitting, Female BSPT, Class 125
CAD																					3D	3D
Days to Ship	8 Days or more	9 Days or more	9 Days or more	8 Days or more	9 Days or more	8 Days or more	10 Days or more	8 Days or more	8 Days or more	8 Days or more	11 Days or more	8 Days or more	8 Days or more	8 Days or more	9 Days or more	10 Days or more	8 Days or more	9 Days or more	8 Days or more	8 Days or more	28 Days or more	8 Days or more	11 Days or more	13 Days or more
Material	Brass	Steel	Steel	Steel	Brass	Brass	Steel	Steel	Brass	Brass	Brass	Brass	Brass	Steel	Steel	Brass	Brass	Brass	Brass	Steel	Steel	Steel	Stainless Steel	Brass
Surface Treatment	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Zinc Plating	Zinc Plating	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	-	-	-	Zinc Plating / Epoxy Resin	-
Applicable Fluid	Water / Air / Oil	Water / Air / Steam / Oil / Powder	Water / Air / Steam / Oil / Powder	Water / Air / Steam / Oil / Powder	Water / Air / Oil	Gas	Water / Air / Gas / Oil	Water / Air / Gas / Oil	Air	Water / Air / Oil	Water / Air / Oil	Water / Air / Oil	Water / Air / Oil	Water / Air / Steam / Oil / Powder	Water / Air / Steam / Oil / Powder	Water / Air / Oil	Water / Air / Oil	Water / Air / Oil	Water / Air / Oil	Air / Oil	Oil	Oil	Water / Air / Oil	-
Max. Operating Pressure	3.45 - MPa	21 - MPa	21 - MPa	21 - MPa	15 - MPa	-	1.0 - MPa	1.0 - MPa	7 - MPa	3.45 - MPa	3.45 - MPa	3.45 - MPa	3.45 - MPa	21 - MPa	21 - MPa	3.5 - MPa	15 - MPa	15 - MPa	15 - MPa	13.7 - MPa	31 - MPa	40 - MPa ～ 50 - MPa	1.0 - MPa	125
Connection Type	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Unequal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Unequal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Unequal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Unequal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	Pipe to Tube Insert, Equal Diameter	-
Connection Shape	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union	Union
Thread Size 1(inch)	-	1 ～ 3/8	1 ～ 3/8	1 ～ 3/8	-	1/2 ～ 5/8	1 ～ 3/4	1 ～ 3/4	-	-	-	-	-	1 ～ 3/8	1 ～ 3/8	-	-	-	-	-	-	-	1 ～ 3/8	1 ～ 3/8
Thread Size 1(mm)	4 ～ 15	8 ～ 38	4 ～ 50	6 ～ 38	10	-	-	-	-	6 ～ 12	6 ～ 12	6 ～ 15	6 ～ 12	4 ～ 35	6 ～ 50	4 ～ 25	4 ～ 40	4 ～ 30	6 ～ 30	6 ～ 8	20	6 ～ 15	-	-
Connection Thread Type	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	Rc
Types	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	Fitting	-
Types of Related components	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Fitting type	Ring Fitting	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Flare Fittings	Mechanical Joint	Mechanical Joint	Flare Fittings	Ring Fitting	Ring Fitting	Flare Fittings	Flare Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Bite type Fittings	Mechanical Joint	-
Applicable Pipe Type	Copper Pipe (Annealed Copper Pipe)	Steel pipe (general)	Steel pipe (general)	Steel pipe (general)	Copper Pipe (General)	Copper Pipe (for Refrigerant)	Steel pipe (general)	Steel pipe (general)	Copper Pipe (Annealed Copper Pipe)	Copper Pipe (Annealed Copper Pipe)	Copper Pipe (Annealed Copper Pipe)	Copper Pipe (Annealed Copper Pipe)	Copper Pipe (Annealed Copper Pipe)	Steel pipe (general)	Steel pipe (general)	Copper Pipe (General)	Copper Pipe (General)	Copper Pipe (General)	Copper Pipe (General)	Steel pipe (general)	Steel pipe (general)	Steel pipe (general)	Steel pipe (general)	-
Applicable Tube Size Type	Copper Pipe mm size / Copper Pipe inch size	Steel pipe JIS size / Steel pipe metric size	Steel pipe JIS size / Steel pipe metric size	Steel pipe JIS size / Steel pipe metric size	Copper Pipe mm size / Copper Pipe inch size	Size for Copper Pipe Refrigerant	Steel pipe JIS size	Steel pipe JIS size	Copper Pipe inch size	Copper Pipe mm size / Copper Pipe inch size / Copper Pipe mm-inch size	Copper Pipe mm size / Copper Pipe inch size	Copper Pipe mm size / Copper Pipe inch size	Copper Pipe mm size / Copper Pipe inch size / Copper Pipe mm-inch size	Steel pipe JIS size / Steel pipe metric size	Steel pipe JIS size / Steel pipe metric size	Copper Pipe mm size	Copper Pipe mm size / Copper Pipe inch size	Copper Pipe mm size	Copper Pipe mm size	Steel pipe metric size	Steel pipe metric size	Steel pipe metric size	Steel pipe JIS size	-
Tube Material	Copper	Steel	Steel	Steel	Copper	Copper	Steel / PVC / Polyethylene	Steel / PVC	Copper	Copper	Copper	Copper	Copper	Steel	Steel	Copper	Copper	Copper	Copper	Steel	Steel	Steel	Steel / PVC / Polyethylene	-
Thread Nominal	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Nominal A 1	-	8 ～ 25	6 ～ 40	6 ～ 40	-	-	15 ～ 80	20 ～ 50	-	-	-	-	-	6 ～ 25	6 ～ 40	-	-	-	-	-	-	-	10 ～ 80	-
Nominal 1(inch)	1/4 ～ 5/8	-	-	-	-	-	-	-	3/8	1/2 ～ 3/8	1/2 ～ 3/8	1/2 ～ 5/8	1/2 ～ 3/8	-	-	-	1/2 ～ 7/8	-	-	-	-	-	-	-
Applicable Pipe O.D. 1(mm)	4 ～ 19.05	8 ～ 38	4 ～ 50	6 ～ 48.6	10 ～ 15.14	6.35 ～ 19.05	21.7 ～ 89.1	27.2 ～ 60.5	9.52	6 ～ 12.7	6 ～ 12.7	6 ～ 19.05	6 ～ 12.7	4 ～ 35	6 ～ 50	4 ～ 25	4 ～ 40	4 ～ 30	6 ～ 30	6 ～ 8	20	6 ～ 15	17.3 ～ 89.1	-
Nominal A 2 [In case of different diameters](mm)	-	6 ～ 20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Thread Size 2(inch)	-	1/2 ～ 3/8	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Thread Size 2(mm)	-	6 ～ 30	-	-	-	-	-	-	-	8 ～ 15	-	-	8 ～ 15	-	-	-	-	-	4 ～ 25	-	-	-	-	-
Nominal 2 [In the case of different diameters](inch)	-	-	-	-	-	-	-	-	-	1/2 ～ 5/8	-	-	1/2 ～ 5/8	-	-	-	-	-	-	-	-	-	-	-
Applicable Pipe O.D. 2 [In the case of different diameters](mm)	-	6 ～ 30	-	-	-	-	-	-	-	6.35 ～ 15.88	-	-	6.35 ～ 15.88	-	-	-	-	-	4 ～ 25	-	-	-	-	-
Divisions of Max. Operating Pressure(MPa)	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	-	1.0Mpa or Less	1.0Mpa or Less	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	than 2.0Mpa	1.0Mpa or Less	-

Configure

Specification/Dimensions

Material
- Steel
- Brass
- Stainless Steel
Clear

Surface Treatment
- Not Provided
- Trivalent Chromate
- Zinc Plating
- Epoxy Resin
- Nickel Plating
Clear

Applicable Fluid
- Water
- Air
- Steam
- Gas
- Oil
- Powder
Clear

Metric / Inch
- metric
Clear

Max. Operating Pressure
1.0 - MPa

2.94 - MPa

3 - MPa

3.45 - MPa

3.5 - MPa

7 - MPa

7.0 - MPa

13.7 - MPa

14 - MPa

15 - MPa

20.69 - MPa

21 - MPa

28 - MPa

31 - MPa

40 - MPa

50 - MPa

125

150

1000

3900

4400

4600

4900

5300

5700

6100

6500

6600

7300

7600

7700

7800

8000

10000
Clear

Connection Type
- Pipe to Tube Insert, Equal Diameter
- Pipe to Tube Insert, Unequal Diameter
- Pipe to Thread Insert
Clear

Thread Size 1(inch)
1

1 1/2

1 1/4

1/2

1/4

1/8

2

2 1/2

2 1/4

3

3/4

3/8

4

5/8
Drawing

Clear

Thread Size 1(mm)
3

4

5

6

8

10

12

14

15

16

18

20

22

25

28

30

32

35

38

40

42

50
Drawing

Clear

Connection Thread Type
- R
- Rc
- NPT
Clear

Types
- Fitting
- Related Components
Clear

Types of Related components
- Sleeve
- Ring
- Nut
- Mounting Fitting
- Gasket seal
- Air Bleeding Valve
- Heat-Retention Material
Clear

Fitting type
- Ring Fitting
- Flare Fittings
- Sleeve-type fittings
- Bite type Fittings
- Mechanical Joint
Clear

Applicable Pipe Type
- Copper Pipe (General)
- Copper Pipe (for Refrigerant)
- Copper Pipe (Annealed Copper Pipe)
- Copper Pipe (Controlled Copper Pipe)
- Steel pipe (general)
Clear

Applicable Tube Size Type
- Copper Pipe mm size
- Copper Pipe inch size
- Copper Pipe mm-inch size
- Size for Copper Pipe Refrigerant
- Steel pipe JIS size
- Steel pipe metric size
Clear

Tube Material
- Steel
- Copper
- Stainless Steel
- PVC
- Polyethylene
- Resin
- Other Resins
Clear

Thread Nominal
- 1/8B(6A)
- 1/4B(8A)
- 3/8B(10A)
- 1/2B(15A)
- 3/4B(20A)
- 1B(25A)
- 1 1/4B(32A)
- 1 1/2B(40A)
- 2B(50A)
- 2 1/2B(65A)
- 3B(80A)
Drawing

Clear

Nominal A 1
6

8

10

13

15

20

25

30

32

40

50

65

80
Drawing

Clear

Nominal 1(inch)
1/2

1/4

1/8

3/4

3/8

5/8

7/8
Drawing

Clear

Applicable Pipe O.D. 1(mm)
3

3.18

4

5

6

6.35

8

9.52

9.53

10

10.50

12

12.70

13.80

14

15

15.14

15.88

16

17.3

18

19.05

20

21.7

22

22.22

25

27.2

28

30

32

34

35

38

40

42

42.7

48.6

50

60.5

76.30

89.10
Drawing

Clear

Nominal A 2 [In case of different diameters](mm)
6

8

10

15

20
Drawing

Clear

Thread Size 2(inch)
1

1 1/2

1 1/4

1/2

1/4

1/8

2

2 1/2

3

3/4

3/8

4
Drawing

Clear

Thread Size 2(mm)
4

6

8

10

12

15

16

18

20

22

25

28

30
Drawing

Clear

Nominal 2 [In the case of different diameters](inch)
1/2

1/4

3/8

5/8
Drawing

Clear

Applicable Pipe O.D. 2 [In the case of different diameters](mm)
4

6

6.35

8

9.52

9.53

10

10.5

12

12.70

13.80

15

15.88

16

17.30

18

20

21.7

22

25

27.2

28

30
Drawing

Clear

Divisions of Max. Operating Pressure(MPa)
- 1.0Mpa or Less
- than 2.0Mpa
Clear

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Fittings for Steel & Copper Pipes（Connection Shape：Union）

Connection Shape

Configure

Specification/Dimensions

Material

Surface Treatment

Applicable Fluid

Metric / Inch

Max. Operating Pressure

Connection Type

Thread Size 1(inch)

Thread Size 1(mm)

Connection Thread Type

Types

Types of Related components

Fitting type

Applicable Pipe Type

Applicable Tube Size Type

Tube Material

Thread Nominal

Nominal A 1

Nominal 1(inch)

Applicable Pipe O.D. 1(mm)

Nominal A 2 [In case of different diameters](mm)

Thread Size 2(inch)

Thread Size 2(mm)

Nominal 2 [In the case of different diameters](inch)

Applicable Pipe O.D. 2 [In the case of different diameters](mm)

Divisions of Max. Operating Pressure(MPa)