The detachable surface part of the valve is used to support the fully closed position of the valve core and constitute a sealing pair. The general seat diameter is the maximum diameter of the valve. The seat is made of a wide range of materials. All kinds of rubber, plastic and metal materials can be used as Valve Seat materials, such as: EPDM, NBR, NR, PTFE, PEEK, PFA, SS315, STELLITE and so on.
Valve Seat Valve Seat,Exhaust Valve Seat,Hardened Valve Seats,Cylinder Head Valve Seat Hebei Zhonghai Shipping Accessories Manufacturing Co., Ltd. , http://www.zhonghaiship.com
*Adopting PWM control technology,constant current,accurate current control.
*High frequency arc starting,no matter the current is high or low,the arc starting rate high.
*DC AC tig welding machine steady welding current,esthetic shaping of welding seam.
*Adjustable pulse current and pulse frequency, apply to many kinds of welding technology.
*ACDC tig welder one machine serves several purposes,saving the welding cost.
*The machine can automatic welding,Optional cycling water tank.
*Can be used to weld aluminium, stainless steel,carbon steel,alloyed steel,copper,titanium etc.Â
Model:
AC DC TIG-200P
Input power voltage frequency(V,Hz):
AC220(single phase)±15%,50/60
Rated input power capacity(KVA):
4.5
No-load voltage(V):
56
Output current range.(A): Â
20-200
Rated output voltage(V):
18
Duty cycle (%)(25ºC):
60
No-load loss(W):
40
Arc-starting:
HFÂ
Efficiency(%):Â
85
Power factor (COSφ):Â
0.93
Insulation class:
F
Weight(KG):
20
Overall dimension(mm):
498×328×302
Case protection degree:
IP21S
Pre-flow time(s):
0-2
Duty ratio(%): Â
20-8
Current down-slope time(s):
0-5
Post-flow time(s):
2-10
Remote interface:
without
AC welding thickness(mm):    Â
0.5-5
Â
AC DC Pulse TIG Welding Machine product Characteristics:
*Adopting PWM control technology,constant current,accurate current control.
*High frequency arc starting,no matter the current is high or low,the arc starting rate high.
*DC AC tig welding machine steady welding current,esthetic shaping of welding seam.
*Adjustable pulse current and pulse frequency, apply to many kinds of welding technology.
*ACDC tig welder one machine serves several purposes,saving the welding cost.
*The machine can automatic welding,Optional cycling water tank.
*Can be used to weld aluminium, stainless steel,carbon steel,alloyed steel,copper,titanium etc.Â
Model:
AC DC TIG-200P
Input power voltage frequency(V,Hz):
AC220(single phase)±15%,50/60
Rated input power capacity(KVA):
4.5
No-load voltage(V):
56
Output current range.(A): Â
20-200
Rated output voltage(V):
18
Duty cycle (%)(25ºC):
60
No-load loss(W):
40
Arc-starting:
HFÂ
Efficiency(%):Â
85
Power factor (COSφ):Â
0.93
Insulation class:
F
Weight(KG):
20
Overall dimension(mm):
498×328×302
Case protection degree:
IP21S
Pre-flow time(s):
0-2
Duty ratio(%): Â
20-8
Current down-slope time(s):
0-5
Post-flow time(s):
2-10
Remote interface:
without
AC welding thickness(mm):    Â
0.5-5
Â
AC DC Pulse TIG Welding Machine for Aluminum Welding
Model NO.: tig200p
Name: AC DC Pulse TIG Welding Machine
Mosfet: 20PCS
Diodes: 20PCS
Trademark: As require
Transport Package: Carton
Specification: 498x328x302mm
Origin: Shenzhen China
HS Code: 85153900
Model NO.: tig200p
Name: AC DC Pulse TIG Welding Machine
Mosfet: 20PCS
Diodes: 20PCS
Trademark: As require
Transport Package: Carton
Specification: 498x328x302mm
Origin: Shenzhen China
HS Code: 85153900
AC DC Pulse TIG Welding Machine product Characteristics: