Zhejiang Joya Polymer Technology Co.,Ltd , https://www.joyapolymer.com
cylinder tube, hollow hydraulic cylinder honed tube, forged stern tube, stainless steelÂ
forged cylinder, heavy forged steel tube, steel forged pipe mold.
We follow the strict smelting process: EF+LF + VD+VC, to guarantee the inside quality of the ingot is better.
When it comes to forging process, our forging engineers are very skilled and experienced, the simple  process for open die forging is :
Ingot→heating→ forging → Heat treatment (Normalizing+ tempering) → Inspection
→rough machining→UT → twice Heat treatment →finishing machining →Inspection
The forging process can create parts that are stronger than those manufactured by any other metalworking process.
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Process
Open Die Forgings/Â Closed-Die forging
Main products
Heavy Forging Shaft, cylinder, sleeve, ring, drive shaft, marine hardware stanchion, Roller,valves,forging wheels, forging gears, Screw Bearing, gear ring, die-block, flanges, pump, bearing chock.
Materials
carbon steel, alloy steel, tool steel, stainless steel, or customized
Machining:
NC and CNC lathes, CNC milling and turning, grinding, honing, lapping, broaching and other secondary machining
Heat treatment
annealing, normalizing, tempering, nitriding, carbonitriding, carburizing and induction hardening
Surface treatment
Plating, coating, phosphate, anodizing and CVD/PVD plating
Application
Machinery, chemical and petroleum industries, mould, shipping, transportation, agriculture, pipeline, metallurgy, electric generation, boat building, mine industry, etc.
Certificates
3.1B Material Certificates, Dimension report, SGS Certificate available when requeted.
About us
There are more than 60 sets main equipment at present, including two sets of hydraulic forging machines (1600T&4000T), two sets of electro hydraulic hammer (3T&5T), all kinds of air hammers and board drop hammers (1000kg, 560kg, 250kg), 30 sets heat treatment equipment (heavy furnaces and heat Treatment Furnaces) and 30 sets machining equipment with 16m&12m horizontal lathes, 14 sets suspending equipment. We could supply all kinds of free forgings up to 50 Tons including forged shaft, rotor, ring, cylinder, pipe mould and so on. These products have been widely using in machine tool, equipment, mining, railroad, wind power, shipping, automotive and electric power.Â
Products
Inspection equipment
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Qingdao Hexin Machinery offers forged cylinder and tube, such as proof machined forged
cylinder tube, hollow hydraulic cylinder honed tube, forged stern tube, stainless steelÂ
forged cylinder, heavy forged steel tube, steel forged pipe mold.
We follow the strict smelting process: EF+LF + VD+VC, to guarantee the inside quality of the ingot is better.
When it comes to forging process, our forging engineers are very skilled and experienced, the simple  process for open die forging is :
Ingot→heating→ forging → Heat treatment (Normalizing+ tempering) → Inspection
→rough machining→UT → twice Heat treatment →finishing machining →Inspection
The forging process can create parts that are stronger than those manufactured by any other metalworking process.
Â
Process
Open Die Forgings/Â Closed-Die forging
Main products
Heavy Forging Shaft, cylinder, sleeve, ring, drive shaft, marine hardware stanchion, Roller,valves,forging wheels, forging gears, Screw Bearing, gear ring, die-block, flanges, pump, bearing chock.
Materials
carbon steel, alloy steel, tool steel, stainless steel, or customized
Machining:
NC and CNC lathes, CNC milling and turning, grinding, honing, lapping, broaching and other secondary machining
Heat treatment
annealing, normalizing, tempering, nitriding, carbonitriding, carburizing and induction hardening
Surface treatment
Plating, coating, phosphate, anodizing and CVD/PVD plating
Application
Machinery, chemical and petroleum industries, mould, shipping, transportation, agriculture, pipeline, metallurgy, electric generation, boat building, mine industry, etc.
Certificates
3.1B Material Certificates, Dimension report, SGS Certificate available when requeted.
About us
There are more than 60 sets main equipment at present, including two sets of hydraulic forging machines (1600T&4000T), two sets of electro hydraulic hammer (3T&5T), all kinds of air hammers and board drop hammers (1000kg, 560kg, 250kg), 30 sets heat treatment equipment (heavy furnaces and heat Treatment Furnaces) and 30 sets machining equipment with 16m&12m horizontal lathes, 14 sets suspending equipment. We could supply all kinds of free forgings up to 50 Tons including forged shaft, rotor, ring, cylinder, pipe mould and so on. These products have been widely using in machine tool, equipment, mining, railroad, wind power, shipping, automotive and electric power.Â
Products
Inspection equipment
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Black Smith Forged Reducer Pipe Fitting
Model NO.: HX-17-009
Trademark: HEXIN
Transport Package: Wooden Case
Specification: 300*300
Origin: China
Model NO.: HX-17-009
Trademark: HEXIN
Transport Package: Wooden Case
Specification: 300*300
Origin: China
Qingdao Hexin Machinery offers forged cylinder and tube, such as proof machined forged
Qingdao Hexin Machinery Co., Ltd.  is a modern, forging plant specializing in heavy forging in a wide variety of sizes to meet the most stringent customer specifications.
Packaging
Qingdao Hexin Machinery Co., Ltd.  is a modern, forging plant specializing in heavy forging in a wide variety of sizes to meet the most stringent customer specifications.
Packaging