HWASHI · Resistance Welding Equipment
Railway Roof Type Sheet Metal Platform Moving Spot Welding Machine
The HWASHI railway roof type spot welding machine is designed for joining sheet-metal assemblies on a large, flat copper worktable. Its overhead welding head can be positioned across the work area, supporting spot welding on horizontal and vertical surfaces and providing access to selected welding points on large or heavy workpieces.
The platform arrangement is intended for applications such as metal door panels, electrical cabinets, chassis, elevator components, automotive parts, kitchen appliances, and steel or wood furniture. The welding head is balanced for manual positioning, while the machine applies electrode pressure during the welding cycle.
12 monthsWarranty stated in the product listing
1 setListed minimum order quantity
7–30 working daysListed delivery period after payment receipt
The product listing identifies the machine as model WL-SF-MF75K. The technical table on the same listing separately provides reference data for WL-SF-MF160K, WL-SF-MF120K, and WL-SF-MF100K. Confirm the required configuration and its corresponding specification sheet before ordering.
Machine Configuration
Working Principle and Functional Features
Large copper welding platform
The flat copper table supports sheet-metal workpieces during spot welding. When the workpiece can be positioned directly on the table electrode, the operator can access welding locations without continuously holding the part by hand.
Movable overhead welding head
The overhead head is designed to move across the working area, helping the operator position the electrode at the required welding point. The product description highlights accessibility for large workpieces and flexible positioning.
Electrode options for different joints
Electrode tips can be changed to suit the product type and dimensions. The listing also describes the possibility of welding nuts and screws, subject to the selected electrode and process configuration.
Medium-frequency inverter control
The described system uses a medium-frequency inverter and a toroidal belt arrangement to monitor current across the copper bench. The source description identifies a conventional 1,000 Hz medium-frequency generator system.
Material and application flexibility
The machine description references steel, galvanized steel, and aluminum workpieces. Actual weldability and process settings depend on material grade, thickness, surface condition, joint geometry, electrode design, and the selected machine configuration.
Reference Technical Data
Technical Specifications
The following values are reproduced from the product page's model comparison table. The effective platform size and moving-arm range are listed as shared parameters.
| Parameter |
Unit / Notes |
WL-SF-MF160K |
WL-SF-MF120K |
WL-SF-MF100K |
| Input voltage |
Three-phase |
380 V |
380 V |
380 V |
| Input power |
kVA |
160 |
120 |
100 |
| Maximum welding current |
A |
32,000 |
30,000 |
28,000 |
| Maximum electrode force |
kN |
2.2 |
2.2 |
2.2 |
| Welding capacity |
Material thickness combination |
3 + 3 mm |
2 + 2 mm |
1 + 1 mm |
| Welding schedules |
Stored schedules |
32 kinds |
| Effective welding platform size |
mm |
2,200 × 1,200 (customized) |
| Maximum arm moving range |
mm |
2,000 |
The listed welding capacity is a reference value. Confirm material type, coating, thickness combination, weld-nugget requirements, electrode geometry, and production cycle through sample welding and a written technical proposal.
Commercial and supply information
| Item |
Listing information |
| Product model identifier |
WL-SF-MF75K |
| Condition / origin |
New / China |
| Brand |
HWASHI |
| Certification shown on listing |
CE |
| Machine weight |
500 kg |
| Service life stated |
8–10 years |
| Packaging |
Seaworthy wooden packaging |
| Payment terms |
T/T, L/C |
| Supply ability |
50 sets per month |
Related Application Footage
Automated Elevator Door Panel Production
Video reference · Elevator door panel manufacturing
Fully Automatic Production Line for Elevator Door Panels
The referenced factory footage shows an automated elevator door panel production line with enclosed processing stations, material transfer equipment, and coordinated machine operations. It illustrates how automation can be integrated into elevator door panel manufacturing to reduce routine manual handling and support a more continuous production workflow.
This is related application footage for the elevator-component industry, rather than a specification or operating demonstration of the railway roof type spot welding machine featured on this page.
Video source: YouTube – RU2CAV9m4D0
Manufacturer Information
Guangdong Hwashi Technology Inc.
Guangdong Hwashi Technology Inc. describes its business as the development and manufacture of resistance welding equipment, automatic welding systems, and industrial robots. Its company profile states that it was established in 2001 and operates manufacturing bases in Guangdong and Jiangxi, China.
The company profile identifies applications across home appliances, kitchenware, wire and cable products, lighting, metal hardware, electronics, and automotive components. The product portfolio includes spot welding machines, automatic welding lines, and industrial robots.
Certification scope: The product listing displays CE as its certification field. Buyers should request the applicable declaration, certificate number, model coverage, and current validity documents for the exact machine configuration being purchased.
Public Shipment Database Reference
Supplier Export and Shipment References
15US customs shipment records shown in the supplier profile
10Trading partners reported by the database
5US ports listed in the supplier profile
The ImportGenius supplier profile under the name “Guangdonghwashi Technology Inc.” displays 15 US customs records, 10 trading partners, and five ports. The latest sample records shown include leakage testing equipment (October 2026), spare parts for a line (May 2026), a pneumatic AC pulse spot welding machine (December 2025), and welding robot / automatic pipe bending equipment (July 2024).
| Period |
Consolidated product categories |
Destination / market |
Shipment profile shown |
| 2026 |
Leakage testing equipment; production-line spare parts |
United States |
Two sample entries; 4 packages / 2 cases |
| 2025 |
Pneumatic AC pulse spot welding machine |
United States |
One sample entry; 1 package |
| 2024 |
Welding robot and automatic pipe bending machine |
United States |
One sample entry; 6 packages |
Buyer due-diligence points: Confirm the legal supplier entity and any trading-company or subsidiary relationship; match the purchased machine model and configuration to the quotation and technical agreement; and verify destination-specific shipping experience, packing requirements, and export documents for the intended transaction.
Supplier Trade Data Disclaimer. This summary presents selective, representative shipment instances displayed in a public customs database and does not represent the supplier's complete shipping history. Supplier matching is based on the entity name and possible name variants shown by the database; the records are consolidated into high-level product and period summaries and are not an independent audit. Corporate spelling variations, affiliated entities, subsidiaries, or duplicate registrations may exist. These records are reference information only and do not verify or endorse supplier creditworthiness, qualifications, or product quality. Procurement teams should independently cross-check relevant transactions against bills of lading, customs declarations, commercial invoices, and other official documents. Public database coverage and record detail may vary by market and subscription access.
Trade-data source: ImportGenius – Guangdonghwashi Technology Inc. supplier profile.
Procurement and Engineering FAQ
Frequently Asked Questions
1. What information is needed to confirm the right machine configuration?
Provide the workpiece material and thickness, minimum and maximum part dimensions, joint locations, required weld quality, target production volume, and desired automation level. Drawings and representative samples help the engineering team assess the platform size, electrode arrangement, power configuration, and process requirements.
2. Can the machine weld different sheet-metal materials?
The product description references steel, galvanized steel, and aluminum. Material grade, coating, thickness, surface condition, and joint design affect weldability. Confirm the process through sample welding using the actual production material and the proposed electrode configuration.
3. How should buyers evaluate welding quality and process consistency?
Agree on acceptance criteria before production, including weld appearance, nugget or joint strength requirements, destructive or non-destructive test methods where applicable, and process repeatability. Request sample weld results and the relevant inspection records for the approved material and thickness combination.
4. Can the platform and welding head be customized?
The listing states an effective platform size of 2,200 × 1,200 mm, with customization indicated, and a maximum arm moving range of 2,000 mm. Confirm the usable work envelope, head travel, electrode access, fixture layout, and any additional head or control options in the final technical drawing.
5. How is the machine protected for overseas shipment?
The product listing specifies seaworthy wooden packaging. Before dispatch, buyers should confirm the export packing specification, internal machine fixation, moisture barrier, corrosion protection for exposed metal surfaces, shock protection for sensitive components, and package dimensions and gross weight.
6. What are the stated lead time and order quantity?
The listing gives a minimum order quantity of one set and a delivery period of 7–30 working days after payment is received. The confirmed schedule should be stated in the purchase contract after the technical configuration, drawing approval, and production plan are finalized.
7. What warranty and after-sales support are listed?
The product listing states a 12-month warranty. The company profile describes remote technical guidance, operating manuals and videos for applicable machines, and on-site installation and training for more complex systems. Confirm warranty start date, covered components, response times, spare-parts arrangements, and any travel or service charges in writing.
8. Are inspection reports or third-party tests available?
Inspection documentation should be agreed according to the machine configuration and buyer's quality plan. Request a factory acceptance test protocol, electrical and safety inspection records, functional test results, and any applicable third-party reports or material certificates required by the project.
Procurement due-diligence checklist
Confirm supplier legal entity and beneficiary bank details independently.
Approve machine layout, drawings, model number, and option list.
Validate sample welds using production-grade materials.
Define acceptance criteria and factory acceptance test records.
Confirm packing, moisture protection, lifting points, and shipping marks.
Document delivery milestones, warranty coverage, training, and spare parts.
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