Purchasing Guide
At Dai Duong, we understand that customers expect not only high-quality stainless steel products but also a clear, transparent, and easy-to-follow purchasing process. Therefore, this purchasing guide is designed to help you clearly understand: what the next step is, who is responsible, which documents you will receive, and what safeguards your rights when purchasing from Dai Duong.
This document helps you understand:
- How to find and select suitable stainless steel products
- The working process with the Sales Department
- How to confirm orders, make payments, and receive goods
- Related documentation
- After-sales support policies
- Contact persons when issues arise
All steps are standardized in accordance with ISO standards and Dai Duong’s internal procedures.
1. Dai Duong Purchasing Process
1.1. Step 1: Product Selection & Professional Consultation
You can browse the stainless steel product catalog or submit a request via:
- Toll-free hotline: 1800 6869 (extensions 106–115)
- Email: info@inoxdaiduong.com
- Zalo or the regional sales representative
The Sales Department will advise you on:
- Suitable steel grades (304 – 201 – 410 – 430…)
- Specifications: thickness, diameter, width, surface finish, length
- Application requirements explained: material selection based on usage environment, load capacity, and technical standards
- Technical support: guidance on submitting drawings, technical documents, or project images (if required)
- Pricing, promotions, and delivery terms
Note: Stainless steel products always have tolerances in thickness, weight, and surface finish, and actual stock weight may vary. After completing Step 2.2 (Stock Check & Order Confirmation), you will receive a more accurate quotation based on actual weighed quantities.
1.2. Step 2: Stock Check & Order Confirmation
After you confirm your product requirements, the sales representative will verify all information to ensure order accuracy before proceeding.
The sales representative will:
- Inspect and weigh actual stock according to your required specifications
- Reconfirm specifications, number of pipes/bars, total weight, and technical standards
- Update the final unit price based on actual tolerances and stock-check timing
- Clearly communicate the estimated delivery schedule based on logistics conditions
You will receive:
- An official quotation (stamped if required)
- A suitable payment method to proceed to the next step
1.3. Step 3: Payment
Dai Duong customers are divided into two groups, each with different payment policies to ensure fairness, transparency, and suitability based on transaction frequency.
1.3.1. Customers without credit terms
This group includes new customers or occasional buyers.
- Receive full consultation on suitable products and specifications
- Goods are reserved exactly as selected after payment is completed
- 100% advance payment required before warehouse release
- The warehouse will not reserve, bundle, or prepare goods without payment confirmation
- No credit terms or post-delivery payment applied
- Orders are released and scheduled for delivery only after accounting confirms successful payment
1.3.2. Customers with credit terms
This group includes customers with a good transaction history, stable purchasing, or large volumes.
- Supported with fast ordering without waiting for prepayment confirmation
- Priority stock reservation and preparation according to production or construction schedules
- No mandatory prepayment before warehouse release
- Payment allowed after delivery, within agreed terms
- Credit limits and payment terms are determined based on transaction history, purchase volume, stability, and payment reputation
Credit policies apply only to officially approved customers. For detailed credit limits and approval conditions, please contact the hotline or your assigned sales representative.
1.4. Step 4: Order Preparation
Once the order is approved (payment or credit confirmed by accounting), the Warehouse Department will begin preparing the goods according to the confirmed specifications.
Depending on usage needs, goods may be bundled in two ways:
- Full bundle: suitable for receiving complete lots, easy lifting, and handling
- Customized bundling: suitable for optimizing individual work items or construction teams
All goods are securely packed, strapped, and labeled to ensure safety during transportation and easy inspection upon delivery.
1.5. Step 5: Delivery
Dai Duong offers three flexible delivery options to meet different customer needs: warehouse pickup, delivery to transport depots, or door-to-door delivery. Each option helps optimize time, cost, and safety.
1.5.1. Warehouse Pickup
Warehouse pickup allows full control over timing and transport, ideal for urgent orders or customers located nearby. On-site inspection helps minimize specification discrepancies, with no transportation costs incurred (transport support may be available). This option is optimal when you want to verify product quality before use.
Pickup instructions:
When arriving at the warehouse, please bring:
- ID card/citizen ID or introduction letter (for companies)
- Order information or PO code
The warehouse will support:
- Delivery according to confirmed specifications
- Standardized weighing
- Complete delivery documentation
1.5.2. Delivery via Interprovincial Transport Companies
Applicable to customers outside Ho Chi Minh City or for heavy/bulky orders such as stainless steel coils, large sheets, or orders beyond Dai Duong’s direct delivery capacity. Customers are responsible for coordinating with transport companies and paying freight charges to their local destination.
Note: Dai Duong delivers goods only to the designated transport depot in Ho Chi Minh City. After handover, customers are responsible for tracking the shipment. Dai Duong is not responsible for storage, loss, or damage once goods are handed over to the transport company.
1.5.3. Door-to-Door Delivery
Door-to-door delivery offers maximum convenience for busy customers or remote construction sites. Goods are transported by Dai Duong’s own fleet, saving travel time and reducing risks of damage during self-transport. You can inspect goods directly at the site, ensuring smooth receipt and continuous construction.
Conditions for door-to-door delivery:
- Applicable when the order meets the minimum volume for each area
- Free delivery for orders meeting the current value/volume threshold
- For orders below the minimum, customers may choose warehouse pickup or paid delivery support
- For detailed volume thresholds and delivery fees, please contact your sales representative
1.6. Step 6: After-Sales Support
Dai Duong is committed to accompanying you throughout the product lifecycle. After delivery, you will receive full support services, including:
- Prompt VAT invoice issuance with correct information and timing
- Technical support during processing or construction, answering all stainless steel material inquiries
- Returns/exchanges if products do not match confirmed specifications
- Supplementary CO/CQ documents per batch or project item as required
- Additional urgent deliveries for ongoing projects
2. Frequently Asked Questions
2.1. What information is required for a quick quotation?
Please provide: steel grade, specifications, quantity, application, and drawings/project images (if available). The more complete the information, the faster and more accurate the quotation.
2.2. Can I work directly with the Warehouse or Accounting Department?
No. All communication is handled through a single assigned sales representative to ensure clarity, efficiency, and avoid errors.
2.3. How does the warehouse bundle goods?
Goods can be bundled as full lots or in smaller quantities, depending on your construction, handling, or warehouse intake requirements.
2.4. Are small orders delivered?
Yes, but delivery fees may apply. Alternatively, you can pick up goods directly at the warehouse to save costs.
2.5. Can I inspect goods before acceptance?
All orders are inspected at the warehouse or delivery location. Customers have the right to fully inspect goods before signing acceptance.
2.6. How are incorrect deliveries handled?
We offer immediate exchange/return if products do not match the confirmed order.
If you need support or would like faster consultation, please contact us using the information below:
Delivery Policy
Dai Duong applies flexible delivery methods to meet customer needs nationwide. Depending on the location, weight, type of goods, and accessibility of the delivery site, the company will arrange a suitable transportation solution such as direct delivery by Dai Duong trucks, delivery via interprovincial transport depots, or customer pickup at the warehouse.
1. Delivery Methods
1.1. Direct Delivery by Dai Duong Trucks
Applicable to customers located in areas under the former administrative boundaries including Ho Chi Minh City, Dong Nai, Binh Duong, Long An, and nearby provinces, subject to the company’s minimum weight requirements.
The Logistics Department will arrange suitable vehicles (1.5-ton, 1.9-ton, 5-ton, or 8-ton trucks) depending on the order volume and load capacity.
1.2. Delivery via Interprovincial Transport Depots
Applicable to customers outside Ho Chi Minh City or for heavy and bulky orders such as stainless steel coils, large-format sheets, or orders beyond Dai Duong’s direct delivery capacity.
Goods will be delivered to the transport depot in Ho Chi Minh City designated by the customer. Customers are responsible for coordinating directly with the transport company and paying the freight charges to receive the goods.
1.3. Customer Pickup at Warehouse
Customers may collect goods at the following location:
Tay Lan Warehouse
Address: 27/4 Tay Lan Street, Binh Tan Ward, Ho Chi Minh City, Vietnam
Depending on the product category (pipes/bars or sheets/coils), different transportation support policies may apply.
2. Delivery Time
Delivery time depends on geographical distance, delivery routes, vehicle type, combined load capacity, and the logistics schedule.
2.1. Delivery Time by Dai Duong Trucks (Ho Chi Minh City Area)
Estimated time: Within 1–2 days from order confirmation and warehouse release.
2.2. Delivery Time for Remote Areas / Large Volumes (Areas Near Ho Chi Minh City)
For combined deliveries, the estimated time is 1–3 days, depending on route schedules and load capacity.
2.3. Delivery Time via Transport Depots in Ho Chi Minh City
Dai Duong will hand over goods to the transport depot within 1–2 days. Customers are responsible for tracking the onward delivery schedule with the transport company.
3. Transportation Costs
3.1. Ho Chi Minh City and Nearby Areas
Free delivery is applied for orders from 600 kg and above. Please contact the sales representative directly for detailed consultation.
3.2. Remote Provinces / Other Cities
- Free delivery to transport depots within Ho Chi Minh City for orders reaching 600 kg per order
- For orders below the free-delivery threshold, customers are responsible for transportation fees according to the applicable rate schedule
3.3. Transportation Support for Warehouse Pickup
To optimize costs for customers who pick up goods at Tay Lan Warehouse, Dai Duong applies transportation support policies based on order volume and product type.
4. Important Notes on Dai Duong’s Delivery Policy
- For delivery via transport depots, Dai Duong delivers goods only to the transport depot designated by the customer in Ho Chi Minh City. After handover, customers are responsible for tracking the shipment to their local destination. Dai Duong is not responsible for storage, loss, or damage once goods have been handed over to the transport company.
- Dai Duong delivers only to areas accessible by road infrastructure.
- Customers should check restricted roads, truck operation hours, and site access conditions to facilitate smooth delivery.
- Orders that do not meet delivery support conditions or fall outside the delivery area will be clearly informed of transportation fees before order confirmation.
- In case of delays due to weather, traffic, or transport companies, Dai Duong will notify customers promptly and facilitate order cancellation if necessary.
If you need support or would like faster consultation, please contact us using the information below:
Payment Policy
Dai Duong is committed to providing a safe, transparent, and convenient purchasing experience. All transactions are conducted through a single payment method to ensure accurate reconciliation and minimize risks for customers.
1. Accepted Payment Methods
Dai Duong supports one payment method for your convenience: Bank Transfer.
This is the recommended method due to its safety, convenience, and fast reconciliation. Please transfer funds to Dai Duong’s official bank account:
- Account Name: DAI DUONG O S S INTERNATIONAL JOINT STOCK COMPANY
- Account Number: 1470280324
- Bank: BIDV – Ba Thang Hai Branch
After completing the transfer, please send the payment slip or notify your sales representative so we can promptly confirm the transaction.
Notes:
- All transactions must be made to the company’s official bank account.
- Dai Duong does not request payments to personal accounts.
- All transaction information is strictly confidential.
4. Deposit & Order Payment Regulations
4.1. Order Deposit
For certain orders, including:
- High-value orders
- Custom-made or made-to-order products
- Orders from new customers
Dai Duong may require a deposit to secure stock and ensure on-time delivery planning.
- Standard deposit rate: 10% – 30% of the total order value (depending on the case and agreement).
- The deposit amount will be deducted from the final payable amount.
4.2. Payment Terms
4.2.1. 100% Payment Before Delivery
Under this method, customers make full payment in advance → Dai Duong confirms payment → Goods are released from the warehouse and delivered immediately.
- The selected batch is reserved as confirmed
- Orders are prioritized for fast preparation
Applicable to: First-time customers, occasional buyers, small orders, or urgent deliveries.
4.2.2. Payment After Delivery
Under this method, customers receive the goods first → payment is made later according to the mutually agreed schedule.
- Easier cash flow management during construction or production
- Faster receipt of goods without waiting for payment confirmation
- Convenient for frequent and recurring orders
Applicable to: Regular customers with a clear and reliable transaction history.
4.2.3. Progress-Based Payment
This payment method involves multiple payments based on each stage of the order, for example:
-
Deposit at the start of production
-
Payment upon receipt of partial deliveries
-
Final payment upon completion of the entire order
Applicable to: Custom-manufactured orders, project-based orders, long-term contracts, or orders delivered in multiple phases.
3. Payment Support Policy for Enterprises & Contractors
Dai Duong understands that cash flow is a critical factor for construction, manufacturing, and business operations. Therefore, we provide flexible payment support options for corporate customers, subject to certain conditions.
Eligibility criteria for payment support:
- Good and reputable transaction history
- Complete and valid corporate legal documentation
- Stable purchasing frequency or large purchase volumes
- Framework contract agreement (if applicable)
Payment terms:
Payment periods (e.g., 5 days, 15 days, 30 days, 45 days, etc.) will be individually negotiated based on the level of cooperation and scale of each customer.
4. Payment Confirmation & VAT Invoice Issuance
Dai Duong is committed to providing valid VAT invoices for all transactions.
- Upon receipt of payment, the Accounting Department will send payment confirmation and issue an electronic VAT invoice to your registered email.
- Please review the invoice carefully and notify us promptly if there are any discrepancies.
If you need support or would like faster consultation, please contact us using the information below:
After-Sales Policy
Dai Duong is committed to accompanying you throughout the entire product usage process. After receiving the goods, you will continue to receive comprehensive support services, including:
- Prompt VAT invoice issuance with accurate information and at the time requested
- Technical support throughout processing or construction, addressing all inquiries related to stainless steel materials
- Product exchange or return in case of discrepancies compared to the confirmed order specifications
- Supplementary provision of CO/CQ and quality certificates by batch or by project item, as required for documentation completion
- Additional deliveries for urgent or ongoing projects
1. Scope of After-Sales Support
Dai Duong provides support for issues arising from the supplier’s responsibility, including:
- Incorrect steel grade compared to declared specifications
- Incorrect technical specifications (thickness, dimensions, surface finish, diameter, etc.)
- Incorrect stainless steel type or incorrect batch
- Material or technical defects occurring during manufacturing
- Goods delivered not in accordance with the contract, PO, or delivery records
2. Cases Not Covered by After-Sales Support
Dai Duong is not responsible for issues arising from improper storage, processing, installation, or use that does not comply with standards.
Cases not covered include:
- Damage caused by mechanical impact, external forces, or vandalism
- Improper processing or usage for unintended purposes or unsuitable environments
- Incorrect cleaning or maintenance procedures leading to surface corrosion
- Use of highly corrosive or inappropriate cleaning chemicals
- Use of stainless steel grades such as 201 or 430 in special environments such as:
⇒ marine environments, strong chemical exposure, or areas with high humidity and salt content
In addition, Dai Duong is not responsible for indirect or consequential damages, including:
- Loss of assets, equipment, or tools
- Production interruption or loss of profits
- Third-party claims
- Risks arising from failure to follow technical instructions
3. After-Sales Support Options
Upon receiving a support request, Dai Duong will inspect and resolve the issue using one of the following options, depending on the actual condition of the product and related documentation:
3.1. Full Product Recall and Replacement
Applied when the product is unusable or completely inconsistent with the order, including:
- Incorrect steel grade
- Major specification discrepancies (incorrect thickness, diameter, or dimensions beyond standard tolerances)
- Incorrect product type
- Serious manufacturing defects
Handling method: Dai Duong will recall the entire non-compliant batch and fully replace it with the correct type, specifications, and quantity as stated in the PO.
3.2. Partial Recall and Compensation
Applied when only part of the batch is defective, or when the goods remain usable but require supplementation or adjustment, such as:
- Some pipes/bars slightly dented or bent
- Quantity shortage compared to the PO
- Partial batch delivered with incorrect length or surface finish
- Some coils/sheets lightly scratched during transportation
- Goods meeting standards but with weight surplus or shortage compared to PO data
Handling method: Dai Duong will recall the defective portion and compensate or replace the missing/incorrect part to ensure full quantity and correct specifications. Related documents and invoices will be adjusted to match the actual purchased quantity.
3.3. Price Reduction or Value Refund
Applied when defects are minor and do not affect usability, or when the customer chooses to keep the goods instead of requesting replacement.
Common applicable cases include:
- Minor surface scratches without impact on quality
- Minor deviations within tolerance limits
- Cosmetic defects in non-critical areas
- Customer’s request to retain the goods in exchange for a price adjustment
Handling method:
- The reduction amount will be negotiated based on the actual impact on product value and usability.
- The adjusted amount will be refunded via bank transfer or deducted from the next order, according to the customer’s preference.
3.4. Technical Support – On-Site Rectification
Applied to minor issues that can be resolved directly at the construction site or warehouse without recall or replacement.
Applicable when:
- Minor defects can be rectified on-site without affecting product performance
- Products require surface polishing, cleaning, technical adjustment, or verification of specifications, steel grade, or surface finish
Handling method:
Dai Duong’s technicians will provide on-site support at the construction site or warehouse, guiding or performing corrective actions to ensure the customer’s construction schedule is not disrupted.
4. After-Sales Handling Procedure
Dai Duong provides direct after-sales support without intermediaries. When stainless steel products encounter issues such as incorrect specifications, incorrect steel grade, technical defects, abnormal corrosion, or discrepancies compared to the contract, we follow the procedure below:
4.1. Step 1: Customer Notification
Customers contact their assigned sales representative or the hotline to report the issue, including photos or videos. This information serves as the initial basis for assessment.
4.2. Step 2: Dai Duong Inspection & Verification
The technical and QC teams will review the information based on images, videos, and descriptions.
- If the issue falls within the support scope, we will respond with the expected timeline and handling option.
- If on-site inspection is required, technicians will be arranged to visit the customer’s site or warehouse.
4.3. Step 3: Agreement on Support Solution
Dai Duong and the customer will agree on:
- The support option (replacement, compensation, price adjustment, or on-site rectification)
- Timeline for recall, handling, and redelivery
- Required documentation (if any)
4.4. Step 4: On-Site Inspection and Resolution
Dai Duong’s technicians will directly inspect the products, verify the defect level, and implement the agreed support solution at the construction site or warehouse.
5. Frequently Asked Questions
5.1. Which products are covered by Dai Duong’s after-sales support?
Dai Duong supports stainless steel products with incorrect steel grades, specifications, quantities, surface finishes, incorrect batches, or manufacturing defects. All cases must align with the contract, PO, and delivery records.
5.2. How is incorrect delivery handled?
The issue will be resolved through one of the following options:
- Full replacement for serious discrepancies
- Partial recall and compensation for localized issues
- Price reduction if defects are minor and the customer chooses to keep the goods
- On-site rectification if direct correction is feasible
5.3. How long does after-sales support take?
- Initial response: within 2–12 working hours
- Resolution time: 1–3 days, depending on the selected support option
If you need support or would like faster consultation, please contact us using the information below:
