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About UsZhengzhou Coal Mining Machinery Green Materials Technology Co., Ltd. (hereinafter referred to as the “Company”) is a wholly-owned subsidiary of Zhengzhou Coal Mining Machinery Group (hereinafter referred to as the “ZCMG Group”), and is an important component of the ZCMG Group’s coal machinery sector’s “integrated” and “intelligent” strategies.
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ProductsCast and forged parts for the entire series of hydraulic supports used in coal mining machinery, cast and forged parts for the entire series of scraper conveyors, castings for oil top drives, castings for gas turbine cylinders, castings for crushers, forgings for tunnel boring machines, and forgings for agricultural machinery equipment, among other products.
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Technological innovationThe company places great emphasis on the integration of industry, academia, and research, and has established a deeply integrated innovation system with universities and research institutions such as Zhengzhou University, Henan University of Science and Technology, Henan University of Technology, and the Zhengzhou Institute of Mechanical Research.
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BlogWe provide abundant industry insights and company updates to help you stay ahead of the market, grasp industry trends, and jointly create a bright future.
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Join UsPersist in advancing innovation and development in tandem, closely following market demands and continuously pushing beyond our own limits.
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Contact UsWe sincerely invite you to visit our company in person for an on-site tour and guidance. We look forward to collaborating with you to achieve shared growth and create a brilliant future together.
Middle Cylinder Barrel
Bore diameter: 140–600 mm
Tensile strength: ≥850 MPa
Yield strength: ≥650 MPa
Elongation: ≥20%
Sectional reduction ratio: ≥55%
Impact energy: ≥60 J
Purpose: To support the telescopic movement of the secondary hydraulic cylinder and to coordinate pressure distribution and stroke control between the primary and secondary cylinders.
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Keywords： Middle Cylinder Barrel
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Product Description
Tensile strength: ≥850 MPa
Yield strength: ≥650 MPa
Elongation: ≥20%
Sectional reduction ratio: ≥55%
Impact energy: ≥60 J
Purpose: To support the telescopic movement of the secondary hydraulic cylinder and to coordinate pressure distribution and stroke control between the primary and secondary cylinders.
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Zhengzhou Coal Mining Machinery Green Materials Technology Co., Ltd.
Address: No. 58, Danjiang Road, Shangjie District, Zhengzhou City
Phone:+86-371-67891855(Administrative)
+86-371-67891856(Sales)
Fax:+86-371-67891856
Email:glgs.zmj@zmj.com
Website:www.zmjgl.com
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