Valve Cover Systems  Manufacturers, Traders, Suppliers

Qingdao Singho Industrial Co.,Ltd. (Est.in 1999) is a leading company in OEM/ODM services for US and European customers. With in-house casting foundry, CNC machining workshop, assembly line and quality testing lab, we have built long-term partnerships with 200+ customers in 20+ countries.
Material covered
• Carbon steel (e.g. AISI 1015/1045/1080) [0.1-80kg]
• Alloy steel (e.g. AISI 4140/4340/8620) [0.1-80kg]
• Stainless steel (e.g. 300 series, 400 series, 17-4PH, 15-5PH) [0.1-80kg]
• Complex alloy (e.g. G22NiMoCr5-6) [0.1-80kg]
• Gray Iron [0.1-1000kg]
• Ductile Iron (Spheroidal Graphite Iron) [0.1-1000kg]
• Aluminum Bronze [0.1-80kg]
Production Process
• Reverse engineering
• Quick prototyping (with 3D printing and casting simulation)
• Casting (investment casting, shell casting, resin sand casting, green sand casting)
• Machining
• Surface treatment (polishing, anodizing, priming, painting, rubber coating)
• Assembly
QC Test (to be performed as requested with official reports)
• Dimensional checks
• Mechanical property
• Chemical composition
• NDE tests (VT, PT, MT, UT, RT)
• Hydraulic pressure tests (for pressurized parts)
• Pump performance curve tests

NINGBO HENTO METAL PRODUCTS CO.,LTD. is a a leading manufacturer specializing in precision metal parts production ,Located in Ningbo, Zhejiang Province,China. With 15 years development ,HENTO METAL have grown up a comprehensive international manufacturer and trade platform integrate,production, product development and international trade.
Why choose HENTO METAL :
Expertise in Industrial Metal Components: 15+ years of experience producing CNC-machined parts, stampings, castings, and custom assemblies for global clients in automotive, machinery, and engineering sectors.
✅ ISO 9001-Certified Quality: Rigorous quality control from raw material selection to final inspection, ensuring compliance with DIN/EN/ISO standards.
✅ Cost-Effective Solutions: Competitive pricing with streamlined production in Ningbo, China, coupled with flexible MOQs for prototype or bulk orders.
✅ Agile Lead Times: 30% faster turnaround than industry averages, supported by in-house tooling and vertical integration
Our main products include :
stainless steel precision parts （froging/cnc/precision casting)）
Aluminum alloy precision parts (die casting /cnc/forging /gravity casting/high presure casting）
Zinc alloy precision parts（die casting/cnc machining/cnc turning）
Copper parts : brass, lead-free copper (casting/cnc machining/forging parts )
Alloy steel precision parts
Iron precision parts(casting/cnc )
Sheet metal stamping,welding and drawing precision parts
The products are widely applied in mechanical industries such as healthcare,petroleum, electricity, automobiles, food, chemicals, railways, mines, steel, shipbuilding, etc;
Quality Control
Scientific and Efficient Quality Control Methods in Metal Processing
Modern metal processing employs advanced quality control systems integrating cutting-edge technologies and data-driven methodologies:
1.Automated Dimensional Inspection
Laser scanners/CMMs (Coordinate Measuring Machines) for micron-level precision
In-process gauging with CNC machine feedback loops

Complete Solutions for Industrial ValvesAs a global leader of valve manufacturing, Neway (SSE:603699) is dedicated to the production, research, and development of industrial valves. Neway is committed to providing complete valve solutions to all industries through advanced engineering and innovation.Neway’s product line includes Ball, Butterfly, Gate, Globe, Check, Nuclear, Control, Subsea, Safety valves. Our high quality standards and innovative ability are recognized by many global end users and EPCs. Neway valves are utilized in a wide variety of industries and working conditions such as Refining, Chemical, Coal Chemical, Offshore(including subsea), Air Separation, LNG, Nuclear Power, Power Generation, and Pipeline Transmission applications.Facilities & ServiceNeway has developed a sophisticated multi-plant management system operating one valve assembly plant, one API6A valve plant, three foundries, and one R&D center. Our largest assembly plant was expanded in 2013, and it now covers 35,000 square meters.Advanced software (ANSYS, FE-Safe, CF-Design, Siemens PLM and NX) is applied here at Neway for the Research & Development of products. We use SPA&MES to control the traceability and status of all products during the manufacturing process. In order to ensure the safety, eco-friendliness, and reliability of our products, we use the most advanced fire-safe, cryogenic, high pressure, and fugitive emission test equipment.As part of Neway’s global strategy, to provide better service to our customers, we have established our overseas subsidiaries in USA, Netherlands, Italy, Singapore, and Dubai along with over 80 agents and distributors worldwide.

AECA is a privately owned, focusing on the processing and production of precision parts. We are ISO9001:2015 Quality Management System.
IATF16949:2016 Automotive Quality Management Systems certified and are certifying ISO13485:2016 Quality Management System for Medical Device Manufacturing. State of the art precision machining facility is continually evolving as we strive to stay at the forefront of machining and manufacturing.