How a 4-Inch Pipe Mix-Up in Argentina Turned into a Full-Payment Order
One-Minute Overview
An Argentine customer originally wanted 800 steel pipes with an OD of 101.6mm.
He thought the price was too high, but said if we could help weld the fittings, he'd accept it.
We used a "volume for price" approach to bump the order up to 1,600 pipes and threw in welding and anti-rust services.
After we received the fittings, we found they wouldn't fit — the customer thought 4 inches = 101.6mm,
but a real 4-inch pipe is actually 114.3mm. We proactively investigated and corrected the mistake.
In the end, we agreed on 1,500 pipes, spec OD 114.3mm × ID 110mm × 2mm × 3m, shipped in two batches.
The customer paid in full upfront, and we produced, welded, oiled, and shipped on time.
Argentina Client Profile and Rolling Door Main Beam Use
Customer info — Region/Role: Argentina, company owner (end user).
Product type & name — Product: Rolling door main beam.
Product type & name — Product: Rolling door main beam.
Use: Rolling door (Rolling Door) reel assembly.
Full Communication Timeline
Initial Inquiry and Quotation
The customer initially came to us with a regular inquiry,
planning to purchase 800 pieces of hot-rolled pipes with an OD of 101.6mm,
wall thickness 2mm, and length 3 meters.
To us, that was a clear spec, so we quoted based on it.
└Argentine client inquired 800 hot-rolled steel pipes, 101.6mm OD, 3m, for rolling door beams.
After I sent the quotation, the customer thought the price is higher,
but said they would accept it if we could help weld fittings onto both ends.
└After quote, Argentine client accepted if we welded rolling door fittings on both ends.
Welding Value-Added Service and Volume-for-Price
To close the deal and help him save costs,
we proposed a "volume for price" plan: if he increased the order to over 20 tons (about 1,600 pipes),
we'd not only give him a better price but also add welding and anti-rust oil coating as value-added services.
└To cut costs, we raised order to 1600 pipes with welding and anti-rust, client agreed.
Full Prepayment and Partial Shipment
The customer accepted, agreed to pay in full,
and only requested shipment in two batches and asked me to send the PI.
|
No
|
Product Description
|
Qty.
|
Unit Price
(USD)
|
otal Price
(USD)
|
| 1 |
HOT ROLLED CARBON STEEL TUBE(Roller shutter door beam), 101.6mm OD, 2 mm thickness, 3 meters long + spot welding
|
1600
|
13.70
|
21,920.00
|
|
Ex-work (Xiamen)
|
21,920.00
|
└Argentine client sent PI, agreed to full payment, and requested shipment in two batches.
Key Turning Point: Fittings Do Not Match Steel Pipe Size
After the contract was signed,
we proactively reached out to the customer's fitting supplier and got samples to test the fit in advance.
But when the fittings (rings) arrived, we measured them and found the OD was 108mm.
108mm Fittings vs 101.6mm Steel Pipe
That ring was meant for a 114.3mm (4-inch) pipe, while the customer's pipe was 101.6mm OD.
The two could not match at all.
└After receiving rolling door beam fittings from Argentina, we found they didn't match the pipes.
Customer Says “Just Weld It” and Two Backup Solutions
We immediately reported this to the customer.
But he said, "Just weld it on," or suggested using 100mm fittings instead.
However, the supplier didn't have that size.
└Argentine client said just weld it, but supplier had no 100mm rolling door shaft fittings.
We then proposed two backup plans: one, we'd only weld part of the fittings and the customer would handle the rest locally;
two, we'd pay out of pocket to turn down the ring's OD.
But the customer rejected both — because the welding was only meant to satisfy a special Argentine regulation about "importing engines."
Once the goods arrived in Argentina, all the welded parts would be removed and redone.
The customer didn't want to spend any extra money.
└We offered two solutions for the rolling door fitting mismatch, but Argentine client rejected.
Root Cause: 4-Inch Conversion Mistake
Seeing the deal stalling, we went back and checked the root cause.
That's when we found the real issue: an imperial-to-metric conversion mistake.
- The customer thought 4 inches = 25.4mm × 4 = 101.6mm.
- The customer thought 4 inches = 25.4mm × 4 = 101.6mm.
So the ring he provided was actually made for the international standard 4-inch pipe (actual OD 114.3mm).
└Argentine client understood his 4-inch pipe size calculation error after our explanation.
- But in fact, a pipe with an OD of 101.6mm is a 3.5-inch spec.
A true 4-inch pipe has a nominal OD of 114.3mm, according to ASME B36.10.
└ASME B36.10 steel pipe size chart for imperial to metric conversion.
Final Solution: Same Order Value, 1,600 Changed to 1,500
Once the misunderstanding was cleared up, we negotiated and kept the order value the same:
- Changed the quantity from 1,600 to 1,500 pipes.
- Changed the pipe spec to OD 114.3mm × ID 110mm × 2mm × 3m.
- Shipped in two batches (750 + 750).
- Changed the quantity from 1,600 to 1,500 pipes.
- Changed the pipe spec to OD 114.3mm × ID 110mm × 2mm × 3m.
- Shipped in two batches (750 + 750).
|
No
|
Product Description
|
Qty.
|
Unit Price
(USD)
|
Total Price
(USD)
|
|
1
|
HOT ROLLED CARBON STEEL TUBE (Roller shutter door beam), 114.3mm OD, 2 mm thickness, 3
meters long + spot welding
|
1500
|
14.613
|
21,920.00
|
|
Ex-work (Xiamen)
|
21,920.00
|
└Misunderstanding solved, Argentine client corrected pipe size, adjusted quantity, and paid.
Production, Welding, Anti-Rust Oil, and Shipping
After receiving payment, we immediately bought raw materials and arranged production.
We kept the customer updated and sent a video of the finished welding for confirmation.
└After receiving payment from Argentina, we started production and updated the client.
Once production was done,
we coated the pipes with anti-rust oil and worked with the customer's designated freight forwarder to load and ship.
└After production, we loaded and shipped with the Argentine client's designated forwarder.
Customs Declaration
└We handled export customs declaration for rolling door beams per regulations.
customs declaration number: 37112026000378947
Tax and Compliance Tip: Welded Pipes as Components
Tip: Once steel pipes are welded, they become components — which can also save the customer some tax fees and comply with Argentine import regulations.
Why did the customer choose us?
1. We solved his core pain point — import/export compliance (the most critical part).
The customer didn't really need a beautiful product.
He just needed pipes + welded parts to get through customs import policy (which would actually be removed after arrival).
We caught that key need and provided "spot welding" as a value-added service. That sealed the deal.
2. Trust built through professionalism.
When we found the size mismatch, we didn't blindly follow the customer's "just weld it" instruction.
We professionally pointed out the risk (pipe bending and deformation)
and proactively traced the cause — discovering the fatal gap
between the imperial standard (4 inches = 114.3mm) and the customer's understanding (101.6mm).
That attitude of finding and solving problems made the customer feel we were extremely reliable — even that "you know my product better than I do."
3. Flexible business negotiation (volume for price).
When facing a non-standard size, we used volume to spread the tooling cost — protecting our profit while giving the customer a lower price.
That pushed the order from 800 to 1,600 pipes.
4. Full payment + partial shipment sincerity.
To make the deal happen, the customer accepted full prepayment and partial delivery.
We kept production and the first shipment on schedule, and our trustworthy attitude gave the customer peace of mind.
One-sentence summary
The customer didn't buy just because the price was low.
They bought because we not only solved their production problem but also saved them from scrap and customs risks caused by not understanding industry standards.
That kind of "nanny-style" after-sales service is our absolute ace for closing deals.
Want to understand how a roller shutter door works? See our diagrammatic breakdown of every component.
FAQ
Q1: Do you support OEM/custom specs and materials? What is the MOQ?
A1: We support OEM, custom specs, materials, and surface treatment.
Regular MOQ is negotiable by product type; bulk orders offer better pricing.
Q2: What are the lead time, trade terms, and payment methods for bulk orders?
A2: Regular lead time is 15-30 days depending on stock and surface treatment.
We support FOB, CIF, FCA, EXW, etc. Payment terms are negotiable, usually T/T.
Q3: Are steel pipe surface treatments optional? Can packaging and marks be customized?
A3: Options include galvanizing, blackening, anti-rust oil. Packaging, labels, and marks can be customized.
Q4: How to verify the authenticity of this case?
A4: You can check the customs declaration and bill of lading numbers on our website. This order's customs no. is 371120260000378947; B/L no. is SZ26070188.
Russian PTFE Envelope Gasket Export Case: Domestic Non-Asbestos Alternative to TOMBO No.1995 Wins First Order in 4 Days
My client took 4 months to pay, and the contract had a hidden “claim clause” — how I got through this Singapore fastener order？
Related blog
