# Reduction coupling SANHA SANHA-THERM C-Stahl d18x15 for steel pipes

**URL:** https://aio.lv/en/product--sanha-1242401815--11828580
**Data updated:** 2026-03-09 14:36 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SANHA
**Manufacturer code:** 1242401815
**EAN:** 4021343327261
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sanha-1242401815--11828580

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

SANHA-THERM C-Stahl reduction coupling by SANHA, model d18x15, designed to join steel pipes with a diameter transition from 18 mm to 15 mm. Made for reliable mechanical connection in heating, cooling and plumbing systems where a reduction in pipe size is required. Suitable for use in domestic and commercial installations, ensuring secure, leak-resistant joints when installed according to standards.

## Long description

The SANHA-THERM C-Stahl reduction coupling d18x15 by SANHA is a mechanical fitting designed to connect steel pipes with a diameter change from 18 mm to 15 mm. It is intended for heating, cooling and plumbing systems where a reduction in pipe dimension is required. The coupling provides a compact transition piece suitable for both domestic and commercial installations and is used where a secure, leak-resistant joint is needed when assembled according to applicable installation standards.
Advantages
This reduction coupling offers a robust metal construction suitable for steel piping applications and ensures consistent pipe alignment across the reduced joint. Its design supports reliable mechanical joining without the need for complex tools, and it is compatible with common system pressures found in heating and cooling circuits. The compact dimensions of the d18x15 coupling reduce installation space while maintaining flow continuity through the transition.
Suitable for
 Reduction transitions in closed heating systems
 Piping connections in cooling and refrigeration circuits
 Domestic water distribution where a smaller pipe diameter is required
 Commercial plumbing installations with steel pipework
Key specifications
 Material: carbon steel suitable for steel pipe systems
 Connection type: mechanical compression-style reduction coupling for steel pipes
 Pipe diameters: inlet 18 mm, outlet 15 mm
 Application: heating, cooling and potable plumbing systems where steel pipe fittings are used
 Form factor: compact inline reducer with straight coupling geometry
How to use
Prepare pipe ends by cutting square and deburring to ensure full contact and correct seating of the coupling. Slide the coupling components onto the prepared pipe ends and tighten according to the fitting manufacturer's recommended method and torque values, observing the correct sequence for compression or mechanical fastening. After assembly, test the system pressure in accordance with local regulations to confirm a leak-free joint. Installations should follow industry best practices and applicable codes for steel pipe systems.
Usage recommendations
Use the SANHA-THERM C-Stahl reduction coupling in systems compatible with carbon steel fittings and ensure the selected coupling matches system pressure, medium and temperature requirements. Verify compatibility with any protective coatings or corrosion protection measures applied to the pipework and consult relevant installation standards for torque and testing procedures.

## FAQ

### How much does the Reduction coupling SANHA SANHA-THERM C-Stahl d18x15 cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All SANHA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized SANHA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11828580/67229569_large.webp