JIANGSU WANSHIDA HYDRAULIC MACHINERY CO., LTD Factory Tour

Overview of the Core Production Process
A complete production line can be summarized into the following core stages:
Raw Materials/Purchased Parts Incoming → Cutting & Forming → Structural Welding & Heat Treatment → Precision Machining → Sub-assembly → Final Assembly → Painting & Curing → Machine Testing & Debugging → Packaging & Shipping

Below, we elaborate on each stage in sequence:

1. Raw Material & Purchased Parts Preparation Area
This is the starting point of production. While not a strict "assembly line," it is crucial.
•    Steel Warehouse: Stores various thicknesses of steel plates, section steels (I-beams, channel steel, H-beams), round steel, etc.
•    Purchased Parts/Standard Parts Warehouse: Stores hydraulic components (cylinders, pumps, valves, piping), motors, electrical control systems (PLCs, frequency converters, sensors), standard fasteners, seals, etc.

2. Cutting & Forming Section
The goal of this section is to cut large plates and sections into required shapes and sizes.
•    CNC Plasma/Flame Cutting Machine: Used for high-precision, high-efficiency contour cutting of medium-thick steel plates.
•    Laser Cutter (Modern Factories): Used for thinner plates or cuts requiring higher precision; features a smaller kerf and higher accuracy.
•    Guillotine Shear: Used to shear plates into regular rectangular blocks.
•    Sawing Machine (Band Saw/Circular Saw): Used for cutting section steel and round steel.
•    Press Brake/Rolling Machine: Used to bend or roll cut steel plates into required arcs or box structures.

3. Structural Welding & Heat Treatment Section
The main frame, boxes, and other core load-bearing components of the baler are manufactured here.
•    Welding Platforms/Positioners: Large, sturdy platforms for fixing workpieces, allowing workers to weld from optimal angles.
•    Welders: Primarily use Gas Metal Arc Welding (GMAW/MIG-MAG) and Submerged Arc Welding (SAW). The latter is particularly suitable for long welds and thick workpieces, offering high efficiency and quality.
•    Post-Weld Treatment:
     Vibration Stress Relief/Heat Treatment (Thermal Aging): Eliminates significant internal stresses induced by welding, preventing deformation and cracking during machining and service. Vibration stress relief is more environmentally friendly and energy-efficient, making it the preferred choice in modern factories.
     Sandblasting/Shot Blasting: Removes welding slag and oxide scale, providing a clean surface with a certain roughness for subsequent machining and painting.

4. Machining Section
This is the core link guaranteeing equipment precision and performance. Welded blanks are machined to precise dimensions here.
•    Large Gantry Milling/Planing Machine: Used to machine the mating surfaces of oversized components like the main frame and side plates, ensuring flatness and parallelism.
•    Vertical/Horizontal Machining Centers: Used to machine high-precision hole systems and planes on components like cylinder brackets and bearing seats.
•    Lathe: Used for machining shaft-type parts, piston rods, and other rotary components.
•    Boring Machine: Used for machining high-precision holes inside large boxes.
•    Drilling Machine: Used for auxiliary drilling and tapping operations.

5. Sub-assembly Section
Before final assembly, related parts are assembled into sub-components to improve final assembly efficiency.
•    Hydraulic Cylinder Assembly Area: Assembling cylinder tubes, piston rods, seals, etc., into complete cylinders.
•    Main Ram Assembly Area: Assembling wear plates, guide blocks, etc., onto the ram.
•    Box Door Assembly Area: Installing hinges, locking mechanisms, etc.

6. Final Assembly Line
This is the stage where all parts are "integrated" into a complete machine. It typically takes place in a large assembly hall, divided into workstations.
•    Main Frame Positioning Station: Using an overhead crane to place the machined main frame onto the assembly foundation.
•    Core Component Installation Station: Installing main cylinders, side cylinders, ejector cylinders, etc., in sequence.
•    Hydraulic System Installation Station: Installing the hydraulic power unit, valve groups, and connecting high-pressure hoses.
•    Electrical System Installation Station: Installing the control cabinet, wiring, and connecting motors and various sensors (pressure sensors, limit switches, etc.).
•    Lubrication & Safety System Installation Station: Installing lubrication pumps, pipes, safety guards, and fences.

7. Painting & Curing Section
The assembled machine undergoes surface coating for corrosion protection and aesthetics.
•    Pre-treatment: Final cleaning and dust removal of areas to be painted.
•    Paint Booth: Spraying is performed in an enclosed, ventilated environment, typically using a primer + topcoat process.
•    Curing Oven: Heating is applied to rapidly cure the paint.

8. Machine Testing & Debugging Area
This is the final quality gate before shipping, ensuring each machine meets design requirements.
•    No-load Test: Operating the machine without material to check if all actions (compression, ejection, door opening/closing) are smooth, accurate, and free of abnormal noises.
•    Load Test (Trial Baling): Conducting actual baling tests using real scrap metal (e.g., steel chips, scrap rebar).
     Performance Verification: Verifying baling force, bale density, and production efficiency meet standards.
     Hydraulic System Verification: Checking system pressure, temperature for normality, and for any leaks.
     Electrical System Verification: Checking PLC program logic and safety interlock functions for correct and reliable operation.
•    Final Parameter Adjustment: Fine-tuning parameters like pressure and speed based on test results.

9. Packaging & Shipping Area
Tested and qualified machines undergo final packaging.
•    Protective Packaging: Wrapping and protecting precision components (e.g., cylinder piston rods, instrument panels). The entire machine is typically wrapped in film and covered with waterproof canvas.
•    Documentation Preparation: Placing manuals, certificates, warranty cards, packing lists, and other documents into a package for shipping.
•    Loading & Shipping: Transporting the equipment to the customer site using large flatbed trucks.

Summary & Characteristics
The production line for metal hydraulic balers has the following significant characteristics:
•    Discrete Manufacturing: Unlike continuous process industries (e.g., chemicals, food), it is typical discrete manufacturing, where the product is assembled from numerous individual parts.
•    Technology-Intensive: Involves multiple specialized technical fields like welding, large-scale machining, hydraulics, and electrical control.
•    Heavy Manufacturing: Heavily relies on heavy-duty equipment (large machine tools, lifting equipment) to handle high-tonnage workpieces.
•    Project-Based Management: For highly customized, non-standard equipment, production management leans towards a project-based approach, requiring excellent planning and coordination.

I. OEM Services
OEM services demonstrate a factory's strong manufacturing capability and quality control standards. 

The core value provided by the factory includes:

Precise Manufacturing to Print: Strictly adheres to client-provided engineering drawings (2D CAD, 3D models), technical standards, and bill of materials (BOM).

High-Quality Execution: Ensures that welding, machining, assembly, and painting quality meet client specifications.

Supply Chain Management: Procures components from specified brands (e.g., Rexroth hydraulics, Siemens electrical parts) as per client requirements, or utilizes the factory's optimized supply chain to control costs.

Stringent Quality Inspection Process: Conducts in-process and pre-shipment testing according to mutually agreed inspection standards (which may be based on international or client-specific standards).

Brand Customization: Faithfully applies the client's brand logo, nameplate, and color scheme to the equipment.

A typical OEM collaboration process:

The client provides a technical package (drawings, specifications, BOM, etc.).

The factory evaluates technical feasibility and provides a quotation.

Both parties sign an OEM agreement.

The factory manufactures the product, conducting stage-by-stage quality inspections (e.g., post-welding, post-machining, post-assembly).

The client or a third-party representative may conduct mid-term inspections if required.

Upon completion, the machine undergoes factory acceptance testing, and a test report is provided.

The client approves the machine, which is then packaged and shipped.

II. ODM Services
ODM services highlight the factory's technical R&D capability, industry experience, and market insight. Clients are often distributors, startups, or those focused on market development who wish to launch a product quickly but have limited in-house design capacity.

The core value provided by the factory includes:

Ready-made Product Platforms: Offers a selection of mature, market-proven machine platforms (e.g., models with different tonnages, chamber sizes, and levels of automation).

Customized Design & Improvement: Adapts and improves upon existing platforms based on the client's specific needs (e.g., material characteristics to be processed, workshop space constraints, budget).

Structural Modifications: Adjusts chamber dimensions or ram shapes to suit specific scrap materials.

System Configuration: Selects appropriate motor power, cylinder specifications, and control levels (from basic relay control to fully automated PLC with touchscreen interface).

Feature Addition/Reduction: Incorporates optional features like automatic wire feeding, automatic doors, or material weighing systems.

Complete Solution: Provides a full package, from equipment selection and plant layout advice to installation guidance.

Cost Reduction & Faster Time-to-Market: Leverages mature designs and economies of scale in procurement, saving the client significant R&D time and cost.

A typical ODM collaboration process:

The client states their requirements: including target materials, desired output, bale density, automation level, budget, etc.

The factory recommends solutions: proposes 2-3 suitable ODM product solutions with detailed configuration descriptions.

Solution discussion and confirmation: Both parties refine and confirm technical parameters, configuration, and price.

The factory provides formal technical drawings and a proposal.

An ODM agreement is signed.

The factory manufactures the product (process similar to OEM).

The completed machine is tested and confirmed by the client.

Packaging and shipping.

III. The Hybrid OEM/ODM Model
In practice, the line between OEM and ODM is not absolute. Many projects are hybrids of both.

Example: A client selects a factory's basic ODM platform but specifies their own OEM requirements for the core hydraulic or electrical control system (e.g., mandating a specific brand of PLC and particular control logic). The factory is then responsible for the ODM design of the main structure and the OEM manufacturing of the complete machine.

Key Considerations When Selecting a Factory with OEM/ODM Capabilities
If you require such services, you should carefully evaluate the factory's capabilities in the following areas:

Engineering & R&D Team: Does it have a professional engineering team capable of understanding and executing complex technical requirements?

Production Equipment & Processes: Does it possess large machining centers, welding robots, heat treatment equipment, etc., to ensure manufacturing precision?

Quality Assurance System: Does it have a comprehensive quality control process (e.g., ISO 9001 certification) and necessary inspection equipment?

Project Management Capability: Is there a dedicated point of contact (Project Manager) responsible for communication, progress tracking, and problem-solving?

Flexibility & Confidentiality: Can it adapt flexibly to design changes? Is it willing to sign a strict Non-Disclosure Agreement (NDA) to protect your intellectual property?

Proven Track Record: Does it have experience providing OEM/ODM services for other well-known international brands?

Summary
For a metal hydraulic baler factory, offering OEM/ODM services is a testament to its comprehensive strength. It signifies that the factory is not merely a "job shop" but a partner capable of deeply participating in the client's product development process, offering a one-stop solution from concept to finished product.

Whether you need an "executor" to strictly follow your designs (OEM) or a "design partner" to provide mature solutions and optimize them with you (ODM), choosing a factory with the appropriate capabilities is key to the success of your project.

I. OEM Services
OEM services demonstrate a factory's robust manufacturing capabilities and high-quality control standards. 

Core value provided by the factory:

Accurate manufacturing according to drawings: Strictly follows customer-provided engineering drawings (2D CAD, 3D models), technical standards, and bill of materials.

High-quality execution: Ensures that welding, machining, assembly, and painting quality meet customer specifications.

Supply chain management: Procures components of specified brands (e.g., Rexroth hydraulic components, Siemens electrical components) as required by the customer, or uses the factory's optimized supply chain to control costs.

Strict quality inspection process: Conducts in-process inspections and pre-delivery testing according to agreed inspection standards (which may be based on international standards or the customer's internal standards).

Brand customization: Perfectly applies the customer's brand logo, nameplate, and color scheme to the equipment.

Typical OEM cooperation process:

Customer provides a technical package (drawings, technical specifications, BOM, etc.).

Factory evaluates technical feasibility and provides a quotation.

Both parties sign an OEM agreement.

Factory carries out production and conducts staged quality inspections (e.g., after welding, after machining, after assembly).

Customer may send personnel or delegate a third party for mid-term inspection (if needed).

Upon machine completion, factory testing is conducted and a test report is provided.

Customer accepts the machine, which is then packaged and shipped.

II. ODM Services
ODM services reflect the factory's technical R&D capabilities, industry experience, and market insight. Customers are often distributors, startups, or those focused on market development who wish to launch products quickly but have limited in-house design capabilities.

Core value provided by the factory:

Ready-made product platforms: Offers a range of mature, market-verified machine platforms for customers to choose from (e.g., models with different tonnages, chamber sizes, and levels of automation).

Customized design and improvement: Based on the customer's specific needs (e.g., characteristics of the material to be processed, workshop space constraints, budget), adaptive design and improvements are made on existing platforms.

Structural modifications: Adjusting chamber size, ram shape to suit specific scrap materials.

System configuration: Selecting appropriate motor power, cylinder specifications, and level of control (from basic relay control to fully automated PLC with touchscreen control).

Adding/removing functions: Adding optional functions such as automatic wire feeding, automatic doors, material weighing systems.

Complete solution: Provides a full package from equipment selection and plant layout advice to installation guidance.

Cost reduction and faster time-to-market: Leverages mature designs and scaled procurement to save significant R&D time and cost for the customer.

Typical ODM cooperation process:

Customer presents requirements: including target materials, desired output, bale density, automation level, budget, etc.

Factory recommends solutions: provides 2-3 most suitable ODM product solutions with detailed configuration descriptions.

Discussion and confirmation of solution: Both parties refine and confirm technical parameters, configuration, and price.

Factory provides formal technical drawings and a proposal.

Signing of an ODM agreement.

Factory production (process similar to OEM).

Whole machine testing, customer confirmation.

Packaging and shipping.

III. Hybrid OEM and ODM Model
In practice, the boundaries are not absolute. Many collaborations are hybrids of OEM and ODM.

Example: A customer selects a basic ODM platform from the factory but proposes their own OEM design requirements for the core hydraulic or electrical control system (e.g., requiring the use of a specific brand of PLC and specific control logic). The factory is then responsible for the ODM design of the main structure and the OEM manufacturing of the complete machine.

Key points to consider when selecting a factory with OEM/ODM capabilities
If you require such services, you should focus on evaluating the factory's capabilities in the following areas:

Engineering and R&D team: Does it have a professional engineering team capable of understanding and executing complex technical requirements?

Production equipment and processes: Does it possess large machining centers, welding robots, heat treatment equipment, etc., to ensure manufacturing precision?

Quality assurance system: Does it have a sound quality control process (e.g., ISO 9001 certification) and testing equipment?

Project management capability: Is there a dedicated contact (project manager) responsible for communication, progress tracking, and problem-solving?

Flexibility and confidentiality: Can it flexibly adapt to design changes? Is it willing to sign strict Non-Disclosure Agreements (NDAs) to protect your intellectual property?

Track record of success: Does it have experience providing OEM/ODM services for other well-known international brands?

Summary
For a metal hydraulic baler factory, providing OEM/ODM services is a reflection of its comprehensive strength. This means the factory is not just a simple "processing plant," but a partner capable of deeply engaging in the customer's product development process and providing a one-stop solution from concept to finished product.

Whether you need a pure "executor" that strictly follows your design (OEM) or a "design partner" that can provide mature solutions and optimize them together (ODM), choosing a factory with the appropriate capabilities is key to the project's success.