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TUBE MILLS> ERW / HF WELDED TUBE MILLS> High Frequency Welder
High Frequency Welder
SOLID STATE HIGH FREQUENCY WELDER
 
1. Switch Rectifying Cabinet
The switchgear and the rectifier are integrated here into one switch rectifying cabinet, which enables both the switchgear function, and the rectifying control function of the solid state H. F. welders.
 
Incoming MCCB (molded case circuit breaker), incoming current meter, incoming voltage meter (switchable type), and incoming voltage indicator.
 
3-phase full-control thyristor rectifying bridge enables power regulation.
 
Smoothing reactor, smoothing capacitors and filter to increase the smoothing coefficient.
 
2. Inverter Output Cabinet
The inverter circuit consists of MOSFET single-phase inverter bridges connected in parallel, with the power of each bridge designed as 120kW/60kW. Thus the power is accumulated in the style of building blocks. Each inverter board is designed into the drawer structure with slides on both sides, which facilitates installation and repair.
 
The powers is combined through several transformers (called matching transformers) and by direct resonance between the tank circuit resonant capacitors (low voltage) and the inductor, it is transferred to the welding unit via the bus lead, and no welding transformer is needed here.
 
Sealed cabinet with the air conditioner installed on the top of it.
 
3. Central Operator Console
The central operator console allows remote operation and power regulation of the welder. It is equipped with HMI (human/machine interface), indicates DC voltage and DC current of the H. F. welder, and armature voltage and field voltage of the motors of the forming and sizing mill. Design of the central operator console is customized according to different types and quantities of the motors. The power-speed closed loop control / automatic power-speed control function is optional.
 
4. Mechanical Adjustment Device
2-D mechanical adjustment device: applicable for solid state induction welders only. The inverter output cabinet is installed on the adjustment device, so the position of the inductor can be manually adjusted.
 
3-D mechanical adjustment device: applicable for both solid state induction welders and solid state contact type welders. The inverter output cabinet is installed on the adjustment device, so the position of the inductor can be adjusted manually or electrically.
 
5. Closed Loop water cooling system
The GPKL-II cooling system adopts a closed cooling tower, in which the blowers and water spraying hoses on the top will cool the soft water already pumped into the finned tubes. The spraying water (normally purified tap water) is accumulated at the bottom of the cooling tower. It is pumped into the spraying hoses and sprays onto the surface of finned tubes—Part of the spraying water will vaporize when it is falling, thus carries away some heat and partially lower the temperature of the soft water circulating inside. The vapor goes up due to the blower and intensifies the cooling effect when it passes the finned tubes again, and finally goes out of the cooling tower. The other part will fall through the PVC heat exchange layer which is located under the two blowers and above the finned tubes, thus gets cooled by the cold air passing by and finally joins the spraying water at the bottom.
  
 
 
 
Models for solid state H. F. welders 
Output Power
DC Power
Welder Model
Rated Voltage
Rated Current
Frequency
E. Efficiency
60kW
80kW
GGP60-0.5-H
450V
180A
450~500kHz
≥ 85%
100kW
120kW
GGP100-0.45-H
450V
270A
400~450kHz
≥ 85%
150kW
180kW
GGP150-0.4-H
450V
400A
350~400kHz
≥ 85%
200kW
240kW
GGP200-0.35-H
450V
530A
300~350kHz
≥ 85%
250kW
300kW
GGP250-0.35-H
450V
670A
300~350kHz
≥ 85%
300kW
360kW
GGP300-0.35-H
450V
800A
300~350kHz
≥ 85%
400kW
480kW
GGP400-0.3-H
450V
1070A
200~300kHz
≥ 85%
500kW
600kW
GGP500-0.3-H
450V
1330A
200~300kHz
≥ 85%
600kW
720kW
GGP600-0.3-H
450V
1600A
200~300kHz
≥ 85%
700kW
840kW
GGP700-0.25-H
450V
1870A
150~250kHz
≥ 85%
800kW
960kW
GGP800-0.25-H
450V
2130A
150~250kHz
≥ 85%
1000kW
1200kW
GGP1000-0.25-H
450V
2670A
150~250kHz
≥ 85%
1200kW
1440kW
GGP1200-0.25-H
450V
3200A
150~250kHz
≥ 85%
 
Notes: The frequency can reach 800kHz if special design is requested by the customer.
 
 
Exported Solid State HF Welders Since 2006 
Southeast Asia and Central Asia
Date
Company Name
Model
Qtty
Remarks
2006.05.15
India
GGP100-0.45-H
1
India
2007.01.23
India
GGP150-0.4-H
1
India
GGP200-0.35-H
1
India
2007.04.16
India
GGP100-0.45-H
1
India
2007.06.08
India
GGP150-0.4-H
1
India
2007.07.16
India
GGP200-0.35-H
1
India
2007.09.26
India
GGP250-0.3-H
1
India
2007.12.24
India
GGP200-0.35-H
1
India
2008.01.24
India
GGP100-0.45-H
1
India
2008.03.11
India
GGP200-0.35-H
1
India
2008.05.14
India
GGP200-0.35-H
1
India
2008.05.19
India
GGP60-0.45-H
1
India
2008.06.27
India
GGP100-0.45-H
1
India
2008.07.25
India
GGP250-0.35-H
1
India
2008.08.20
India
GGP150-0.4-H
2
India
2008.08.23
Surya Global/Surya Roshni Ltd.
GGP250-0.35-HC
1
India
GGP400-0.3-HC
1
India
2008.09.11
India
GGP100-0.45-H
1
India
2008.09.28
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP300-0.3-H
1
India
2008.11.20
India
GGP150-0.4-H
1
India
2008.12.24
India
GGP100-0.45-H
1
India
2009.01.12
India
GGP100-0.45-H
1
India
2009.03.10
India
GGP300-0.3-H
1
India
2006.06.05
Rongda Steel (Zhejiang) Co., Ltd.
GGP150-0.4-H
5
Malaysia
2006.07.20
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
1
Malaysia
2006.08.25
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
4
Malaysia
GGP150-0.4-H
2
Malaysia
2006.11.20
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
2
Malaysia
2006.11.26
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
6
Malaysia
GGP150-0.4-H
3
Malaysia
GGP200-0.35-H
2
Malaysia
GGP300-0.3-H
1
Malaysia
2006.12.19
Rongda Steel (Zhejiang) Co., Ltd.
GGP200-0.35-H
1
Malaysia
2006.12.28
Rongda Steel (Zhejiang) Co., Ltd.
GGP150-0.4-H
2
Malaysia
2007.01.06
Rongda Steel (Zhejiang) Co., Ltd.
GGP200-0.35-H
1
Malaysia
2007.01.09
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
1
Malaysia
2007.05.11
Rongda Steel (Zhejiang) Co., Ltd.
GGP150-0.4-H
1
Malaysia
2007.05.20
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP100-0.45-H
2
Malaysia
2007.06.16
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
2
Malaysia
2007.09.24
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP300-0.25-HC
1
Malaysia
2007.11.29
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP100-0.45-H
1
Malaysia
2007.12.18
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP100-0.45-H
1
Malaysia
2008.04.10
Mingyu(Kunshan) Import & Export Co.,
GGP150-0.4-H
1
Malaysia
GGP250-0.3-H
1
Malaysia
2008.06.26
Zhangjiagang Zhongyuan Pipe-Making C0.
GGP200-0.35-H
1
Malaysia
GGP400-0.25-H
1
Malaysia
GGP100-0.45-H
1
Malaysia
2008.06.28
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP150-0.4-H
1
Malaysia
GGP100-0.45-H
3
Malaysia
2008.08.21
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP200-0.4-H
1
Malaysia
2008.09.28
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP100-0.45-H
1
Malaysia
GGP200-0.35-H
1
Malaysia
GGP400-0.25-H
1
Malaysia
2009.01.09
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP100-0.6-H
1
Malaysia
2005.12.30
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP150-0.4-H
1
Indonesia
2006.07.22
Jin Young International Co., Ltd.
GGP200-0.35-H
1
Thailand
GGP300-0.3-H
1
Thailand
2006.09.25
Jin Young International Co., Ltd.
GP800-0.3-H
1
Thailand
2008.03.31
Jin Young International Co., Ltd.
GGP800-0.2-H
1
Thailand
2005.06.15
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP300-0.3-H
1
Vietnam
2007.08.08
Shijiazhuang Zhonghui Cold Forming Equi.
GGP200-0.35-H
1
Vietnam
2008.03.17
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP300-0.3-H
1
Vietnam
2008.03.30
Hanzhen Pipe (Tangshan) Co., Ltd.
GGP400-0.25-H
2
Korea
2008.05.08
Bengal
GGP150-0.4-H
1
Bengal
2008.10.02
Jiangsu Nanyang Machinery Co., Ltd.
GGP100-0.45-H
1
Bengal
2008.10.09
Taiyuan Huaye Equipment Research Ins.
GGP800-0.2-H
1
Kazakstan
 
Middle East 
Date
Company Name
Model
Qtty
Remarks
2006.08.23
NE Armin Co.
GGP300-0.35-H
1
Iran
2007.11.29
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP60-0.45-H
1
Iran
2008.01.24
Amol Tube And Pipe Co.
GGP200-0.35-H
1
Iran
GGP300-0.3-H
2
Iran
2008.05.29
Unitherm Inductoweld India P Ltd.
GGP300-0.3-H
4
Iran
GGP350-0.3-H
1
Iran
2008.06.03
Jahan Profile Pars Company
GGP200-0.35-H
1
Iran
GGP300-0.3-H
1
Iran
2008.07.18
Jahan Profile Pars Company
GGP400-0.3-H
1
Iran
2007.11.23
Rongda Steel (Zhejiang) Co., Ltd.
GGP100-0.45-H
1
Saudi Arabia
2007.11.26
Unitherm Inductoweld India P Ltd.
GGP250-0.3-H
2
Saudi Arabia
2007.11.27
Beijing Yanjing Electronics Co., Ltd.
GGP300-0.3-H
1
UAE
2008.01.03
KHK Scaffolding and Formwork L.L.C.
GGP600-0.2-H
1
UAE
2008.02.27
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP200-0.35-H
1
UAE
GGP400-0.25-H
1
UAE
2008.07.17
Conares Metal Supply Limited
GGP200-0.35-H
1
UAE
2008.09.04
Conares Metal Supply Limited
GGP700-0.3-H
1
UAE
2008.01.29
Beijing Yanjing Electronics Co., Ltd.
GGP200-0.35-H
1
Jordon
2008.10.02
Jiangsu Nanyang Machinery Co., Ltd.
GGP300-0.3-H
1
Iraq
 
Africa
Date
Company Name
Model
Qtty
Remarks
2006.07.01
Rongda Steel (Zhejiang) Co., Ltd.
GGP200-0.35-H
1
Sudan
2007.11.26
Rongda Steel (Zhejiang) Co., Ltd.
GGP150-0.4-H
2
Sudan
2007.12.19
Rongda Steel (Zhejiang) Co., Ltd.
GGP300-0.3-H
1
Tunis
2007.11.02
Shanghai Canlan Trade Co., Ltd.
GGP250-0.3-H
1
Kenya
2008.10.09
Shijiazhuang Forever Machinery Co., Ltd.
GGP500-0.25-H
1
South Africa
GGP200-0.35-H
1
South Africa
 
America
Date
Company Name
Model
Qtty
Remarks
2008.05.19
Zhangjiagang Zhongyuan Pipe-Making Co.
GGP250-0.3-H
1
Brazil
2007.10.12
Alphache, Inc.
GGP150-0.6-H
1
Canada
2008.07.25
Ferro Torre S.A.
GGP300-0.3-H
1
Ecuador
2007.06.26
Freedom Machinery Company, Inc.
GGP200-0.35-H
1
Mexico
2006.11.27
Freedom Machinery Company, Inc.
GGP300-0.3-H
1
USA
2006.12.30
Freedom Machinery Company, Inc.
GGP200-0.35-H
1
USA
2007.01.30
National Metalwares, L.P.
GGP150-0.4-H
1
USA
2007.08.01
Steel Slides Inc.
GGP150-0.3-H
1
USA
2008.03.12
Zhangjiagang Zhongyuan Pipe-Making x
GGP150-0.4-H
2
USA
GGP200-0.35-H
1
USA
GGP300-0.3-H
1
USA
2008.05.08
Jiangsu Nanyang Machinery Co., Ltd.
GGP200-0.35-H
1
USA
2008.05.29
Chieftain Steel LLC
GGP200-0.35-H
1
USA
2009.03.18
Freedom Machinery Company, Inc.
GGP200-0.35-H
1
USA
 
Europe
Date
Company Name
Model
Qtty
Remarks
2006.12.08
Shijiazhuang Bearing Equipment Co., Ltd.
GGP200-0.35-H
1
Ukraine
2008.11.17
New Orient Internatioanl Trading Ltd.
GGP800-0.25-H
1
Ukraine
GGP550-0.3-H
1
Ukraine
2008.12.29
GLOTRA TRADING LLC
GGP300-0.3-H
1
Ukraine
2007.11.09
Umran Celik Boru Sanayii A.S.
GGP500-0.2-H
1
Turkey
GGP1000-0.2-H
1
Turkey
2008.10.14
Unitherm Inductoweld India P Ltd.
GGP-150-0.4-H
1
Turkey
2008.09.03
IGM-TRADE Ilija i Dr.D.O.O.
GGP600-0.3-H
1
Macedonia
2008.09.10
Shijiazhuang Zhonghui Cold Forming Equi.
GGP200-0.35-H
1
Poland
 
 
*Total solid State HF welders exported since May 2006: 145 out of 1258