Aluminium semi flexible air ducts are flexible, extendable and highly reliable for low and medium pressure air conditioning, ventilation, boiler systems and chimney liners.
* Oval and circular connectors are easily installed.
GOLMA-COOL ventilation was founded in 2005, we are the special manufacturer in the field of ventilation system. Having been engaged in HVAC/R industry for more than 10 years, we have accumulated rich product knowledge and experience for below productions: *Flexible air ducting*Aluminum Semi Rigid flexible duct*Flexible Duct Connector*Insulation pins*Duct fittings*Duct hardware*Pipe clamps and ventilation clamps*Air valve and diffuser *HVAC TAPE*A/C Brackets We possesses excellent manufacturing capability in the market to provide consistently high quality products. With abundant capital, a professional and experienced team and supports from our strong strategic partners . Semi-Rigid Ducting,Semi Rigid Radial Ducting,Semi-rigid Flexible Ducting,Semi Rigid Ventilation Ducting Ningbo Gemu Ventilation Technology Compnay Limited , https://www.golmacool.com
Productive Technology: Precision Investment Casting (Silcon Sol Process)
Material: Carbon steel:Stainless steel; Alloy steel.
Productive Process: Wax Mould-Shell Making-Dewaxing-Smelting&Casting-Shell Off-Blasting-Cutting&Polishing-Acid Washing-CNC Precised Machining
Casting facility: wax injector, electric furnace,heat treatment furnace,cutting head machine, shot-blasting machine, sand-blasting machine.
Machining facility: CNC,NC lathe,ordinary machine tools,linear cutting machine, NC milling machine, polishing machine.
Heat treatment:Normalizing/Quenching/Tempering.
Test facility:spectrometer, tensile test machine,impact tester, hardness test machine,CMM,PT.
Qingdao Chifine Machinery Co.,Ltd is one famous company in China which specialized in various metal casting products with over 10 years experience located in Qingdao China.It covers a comprehensive range of forging, stamping, sand casting, investment casting, die casting and machining and was widely used in Agriculture machinery, Motor Vehicle, Architecture,Railway and Engineering
As a professional company, Chifine  have four groups of experienced teams to be in charge of deferent work:
 Project team-customer service
Engineering team-provide R&D and technical support
QC team-productive process control and incoming parts inspection
Warehouse team-warehouse management and logistic service
Our casting advantages
1.Developing engineering and customed products as required.
2.Chifine own R&D center could make the clients' ideas to be actual products with support from related engineers from different fields.
3.Experienced technical and inspection team.
4.The whole production cycle is monitored by our Quality Management SystemÂ
5.Very strict with quality control and delivery time.
6.Regular production report.
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Quality Control:
We have a full set of quality control system to guarantee best product quality. Depending on the products, we can make different Item Testing Plan, Manufacturing procedure etc.
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Raw material control
Chemistry spectrum analysis
Mechanical property
Metallographic analysis
Ultrasonic testing
Magnetic testing
Radiographic testing
Dimension inspection
Visual inspection
Penetrant testing
Leak testing
Hardness test
Micro-structure tester after heat treatment
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Our machining shop located in Qingdao,
using the latest CNC equipment to provide our customer with high quality products.
Horizontal and Vertical Machining Center
CNC lathe and normal lathe
CNC drilling and milling Center
Other assistant equipment
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NameOEM Investment/Precision Casting-Stainless /Carbon/Alloy Steel/Iron Casting
Technology
Investment casting of silicon sol production line
Material
Stainless Steel  Carbon Steel Alloy
Surface Treatment
Polishing, machining, machining center, plating, Heat Treatment, and so on
Weight
0.05kg~150kg
Delivery time
Samples within 7-10 days, mass production within 30-35 days.
Packing
Carton or according to customer's requirements
MOQ
100pcs
Payment
T/T,L/C
Capacity
   150 tons per month
Productive Technology: Precision Investment Casting (Silcon Sol Process)
Material: Carbon steel:Stainless steel; Alloy steel.
Productive Process: Wax Mould-Shell Making-Dewaxing-Smelting&Casting-Shell Off-Blasting-Cutting&Polishing-Acid Washing-CNC Precised Machining
Casting facility: wax injector, electric furnace,heat treatment furnace,cutting head machine, shot-blasting machine, sand-blasting machine.
Machining facility: CNC,NC lathe,ordinary machine tools,linear cutting machine, NC milling machine, polishing machine.
Heat treatment:Normalizing/Quenching/Tempering.
Test facility:spectrometer, tensile test machine,impact tester, hardness test machine,CMM,PT.
Qingdao Chifine Machinery Co.,Ltd is one famous company in China which specialized in various metal casting products with over 10 years experience located in Qingdao China.It covers a comprehensive range of forging, stamping, sand casting, investment casting, die casting and machining and was widely used in Agriculture machinery, Motor Vehicle, Architecture,Railway and Engineering
As a professional company, Chifine  have four groups of experienced teams to be in charge of deferent work:
 Project team-customer service
Engineering team-provide R&D and technical support
QC team-productive process control and incoming parts inspection
Warehouse team-warehouse management and logistic service
Our casting advantages
1.Developing engineering and customed products as required.
2.Chifine own R&D center could make the clients' ideas to be actual products with support from related engineers from different fields.
3.Experienced technical and inspection team.
4.The whole production cycle is monitored by our Quality Management SystemÂ
5.Very strict with quality control and delivery time.
6.Regular production report.
Â
Quality Control:
We have a full set of quality control system to guarantee best product quality. Depending on the products, we can make different Item Testing Plan, Manufacturing procedure etc.
Â
Raw material control
Chemistry spectrum analysis
Mechanical property
Metallographic analysis
Ultrasonic testing
Magnetic testing
Radiographic testing
Dimension inspection
Visual inspection
Penetrant testing
Leak testing
Hardness test
Micro-structure tester after heat treatment
Â
Â
Our machining shop located in Qingdao,
using the latest CNC equipment to provide our customer with high quality products.
Horizontal and Vertical Machining Center
CNC lathe and normal lathe
CNC drilling and milling Center
Other assistant equipment
Â
Â
NameOEM Investment/Precision Casting-Stainless /Carbon/Alloy Steel/Iron Casting
Technology
Investment casting of silicon sol production line
Material
Stainless Steel  Carbon Steel Alloy
Surface Treatment
Polishing, machining, machining center, plating, Heat Treatment, and so on
Weight
0.05kg~150kg
Delivery time
Samples within 7-10 days, mass production within 30-35 days.
Packing
Carton or according to customer's requirements
MOQ
100pcs
Payment
T/T,L/C
Capacity
   150 tons per month
* SEMI is elastic, flexible and stretchable.
GOLMA-COOL dedicates to develop continuous innovation technology, to keep our range of products up to date with the current trends and developments of HVAC/R industry.We are assure you with high quality, competitive price, fast delivery and efficient service all the time. We are here with you all the time.
Investment Casting Machine Tool Cast
Model NO.: CFM-6115
Surface Roughness: Ra6.3
Machining Tolerance: +/-0.10mm
Standard: ANSI
Certification: CE, ISO 9001:2008
Origine: Qingdao China
Material Type: Iron,Steel,Iron,Stainless,Aluminium,Brass
Quality Certification: ISO 9001:2008,AISI,Ce,Ieo,SGS
Surface Finish: Polishing,Anodising,Powder Coating,Electric
Weight: 0.5kg~80kg
Technology: CNC Machining/Turning
Brand: Chifine
Wax Casting: Investment Casting Part
Supply Ability: 150tons Per Month
Quality Control: Professional QC and Test Equipment
Trademark: Chifine
Transport Package: in Pallet or as Your Requirement
Specification: ISO9001 SGS CE
Origin: Jimo Qingdao City
HS Code: 7307190000
Model NO.: CFM-6115
Surface Roughness: Ra6.3
Machining Tolerance: +/-0.10mm
Standard: ANSI
Certification: CE, ISO 9001:2008
Origine: Qingdao China
Material Type: Iron,Steel,Iron,Stainless,Aluminium,Brass
Quality Certification: ISO 9001:2008,AISI,Ce,Ieo,SGS
Surface Finish: Polishing,Anodising,Powder Coating,Electric
Weight: 0.5kg~80kg
Technology: CNC Machining/Turning
Brand: Chifine
Wax Casting: Investment Casting Part
Supply Ability: 150tons Per Month
Quality Control: Professional QC and Test Equipment
Trademark: Chifine
Transport Package: in Pallet or as Your Requirement
Specification: ISO9001 SGS CE
Origin: Jimo Qingdao City
HS Code: 7307190000
Investment/Silica Sol/Water Glass/Stainless /Carbon /Alloy Steel/Lost Wax Casting