Type of Fitting

B- Rust Resistant Ferrule Fitting (BR)

E- High Pressure Ferrule  Fitting (ER)

C- Single Ferrule Fitting (SR)

D- Corrosion-Resistant Double Ferrule Fitting (FF/FR )

Applicable media

Non-acidic gases and liquids compatible with the fitting material

Air, water, oils and non-corrosive media

Air, water, oil, nitrogen and other non-corrosive media

Corrosive chemical gases or liquids compatible with the fitting material

Tube Size

Φ4–Φ42mm

Φ6–Φ42mm

Φ6–Φ42mm

Φ4–Φ22mm

Φ1/8″～Φ1/2″

pressure

Medium-High
(60 bar~315 bar)
 

High
(160 bar~630 bar)

High
(160 bar~630 bar)

Medium-High
(160 bar~315 bar)

Working Temperature

-50℃～+200℃

-50℃～+200℃

-100℃～+200℃

-196℃～+350℃

Sealing Type

Soft Seal + Metal-to-Metal Seal

Soft Seal + Metal-to-Metal Seal

Metal-to-Metal Seal

Metal-to-Metal Seal

Sealing Reliability

Excellent

Excellent

Good; Moderate with gases

Excellent

Fitting Safety

≤Φ22mm ferrules: Easy safe installation; ≥Φ28mm ferrules: Use pre-assembly machine

≤Φ22mm ferrules: Easy safe installation; ≥Φ25mm ferrules: Use pre-assembly machine.

≤Φ18mm ferrules: Easy safe installation; ≥Φ20mm ferrules: Use pre-assembly machine.

Facilitates safe and easy installation

Installation cost

Low

Low

Low

Low

Installation
Difficulty

≤Φ22mm ferrules: Easy to install

≤Φ22mm ferrules: Relatively easy to install

Moderate

Relatively easy to install

Tube Precision Requirement

precision seamless steel tubes

precision seamless steel tubes

precision seamless steel tubes

precision seamless steel tubes

Assembly Space Requirement

Moderate

Moderate

Large

Moderate

Applications

BR fittings have good rust resistance, suitable for applications in equipment, water and gas systems.

ER fittings incorporate an innovative sealing design, applicable to hydraulic, lubrication, and dry and non-corrosive gas systems.

SR fittings are conventional single-ferrule fittings, applicable to  hydraulic and lubrication systems.

Double ferrule fittings are widely used in laboratory and instrumentation systems, featuring wide temperature range, suitable for widespread application in seawater, alkaline systems, and certain acidic systems.

Type of Fitting

P- Weld Fitting (Flat Face Seal )

W- Weld Fitting (SKV)

A- / K- Hard Seal Weld Fitting

Applicable medium

Water, oil, air, steam, and other liquids or gases

304/316L Stainless Steel: Wide media compatibility, suitable for fitting-compatible fluids and flammable/explosive gases.

Gases, liquids and corrosive chemical media compatible with the connector material

Steel pipe specifications

Φ10–Φ76 mm

Φ6–Φ42mm

Φ6–Φ42mm

pressure

160bar

Very high

(250 bar~700 bar)

High

(160 bar~400 bar)

Working Temperature

-50℃~+200℃

-50℃~+200℃

-196℃~ +500℃

Sealing Type

Soft Seal

Soft Seal

Metal-to-Metal Seal

Sealing reliability

Excellent

Excellent

Good

Fitting Safety

Excellent

Excellent

Excellent

Installation cost

Moderate

Elevated

Elevated

Installation
Difficulty

Easy

Moderate

Relatively Easy

Tube Precision Requirement

Normal Tube

Normal Tube

Normal Tube

Assembly space

Requirements

Very small

Small

Small

Applicationsurrent application

With a flat sealing surface, P-weld fitting is easy to install/maintain. It is ideal for compact spaces and performs well with large-diameter or non-precision steel tubing.

W-weld fitting has a 24° cone sealing surface. It is designed for large-diameter or non-precision steel tubing, suitable for flammable/explosive gases

A-fitting and K-fitting feature stainless steel hard seal, no rubber or other non-metallic components, broad temperature range.

Series

pipe

Outer diameter

D

Maximum working pressure [bar]*

Installation torque [Nm]

Wrench length

Degree (clamping)

Set)mm

Cross-dressing card holder

Connector E-

+200℃

Single card holder

Connector C-

+200℃

Bright card sleeve

Joint B-

+200℃

Dual card holder

Connector D-

+350℃

Welded joint

Head W-

+200℃

Welded joint

Head K-

+500℃

Glossy Card

Fitting

B-

Welding

Joint

Light

system

column

L

4

-

-

250

250

-

-

-

-

6

315

315

315

315

400

400

29

20

-

8

315

315

315

315

400

400

39

30

-

10

315

315

250

250

400

400

55

40

-

12

315

315

250

250

315

315

75

50

250

15

315

315

210

210

315

315

120

70

250

18

250

250

210

210

315

315

190

90

300

22

250

250

160

160

250

250

280

120

400

28

210

210

120

-

250

250

390

160

500

35

160

160

90

-

250

250

550

250

900

42

160

160

60

-

250

250

800

380

1200

48

-

-

-

-

210

210

-

450

-

60

-

-

-

-

210

210

-

780

-

76

-

-

-

-

180

-

-

1000

-

Heavy

system

column

S

6

630

630

-

-

700

-

-

25

-

8

630

630

-

-

700

-

-

40

-

10

630

630

-

-

700

-

-

50

-

12

630

630

-

-

700

-

-

60

-

14

630

630

-

-

630

-

-

75

250

16

400

400

-

-

500

500

-

85

300

20

400

400

-

-

500

500

-

140

500

25

400

400

-

-

500

400

-

190

900

30

250

250

-

-

420

400

-

270

1200

38

210

210

-

-

400

400

-

400

1500

50

-

-

-

-

315

-

-

700

-

60

-

-

-

-

300

-

-

950

-

Reattach

Column H

48

-

-

-

-

400

400

-

800

60

-

-

-

-

350

350

-

1000