# Reducer coupling SANHA SANHA-THERM C-Stahl d28x18 for steel piping

**URL:** https://aio.lv/en/product--sanha-1242402818--11828930
**Data updated:** 2026-03-09 14:37 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SANHA
**Manufacturer code:** 1242402818
**EAN:** 4021343327308
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sanha-1242402818--11828930

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

SANHA-THERM C-Stahl reducing coupling by SANHA, model d28x18, designed for joining steel pipes with different diameters. The fitting provides a reliable mechanical connection between a 28 mm and an 18 mm steel pipe. Suitable for heating, plumbing and industrial steel piping systems where a secure diameter transition is required.

## Long description

The SANHA-THERM C-Stahl reducing coupling d28x18 by SANHA is a mechanical pipe fitting designed to join steel pipes of two different diameters. Engineered for heating, plumbing and industrial steel piping systems, this reducer coupling offers a secure diameter transition from 28 mm to 18 mm while maintaining the mechanical integrity of the pipeline. The coupling is intended for use with compatible C-Stahl (carbon steel) pipe systems and provides a compact solution where space or layout requires a stepped connection.
Advantages
The reducer coupling ensures a reliable mechanical connection between a 28 mm and an 18 mm steel pipe without the need for welding on site. Its design supports stable alignment and pressure-tight performance when installed according to applicable standards. The compact form factor saves installation space and simplifies piping layouts by eliminating the need for more complex assemblies. Compatibility with SANHA-THERM steel systems reduces the risk of mismatched materials and eases integration into existing heating and plumbing networks.
Suitable for
 Heating system pipe runs requiring a transition from 28 mm to 18 mm
 Plumbing installations in residential and commercial buildings
 Industrial steel piping where a compact diameter reduction is needed
 Retrofit or repair work on C-Stahl pipelines
Key specifications
 Material: C-Stahl (carbon steel) compatible with SANHA-THERM systems
 Connection type: reducing mechanical coupling for steel pipes
 Dimensions: for use with 28 mm and 18 mm nominal pipe diameters
 Application: suitable for heating, plumbing and general industrial steel piping
 Form factor: compact inline reducer coupling
How to use
Select the appropriate pipe ends and ensure both the 28 mm and 18 mm steel pipes are cut square, de-burred and clean. Slide the coupling onto one pipe, align the second pipe into the opposite end and assemble according to SANHA-THERM installation instructions and applicable local codes. Tighten or secure the coupling using the specified method for the product family, and test the joint under the required system pressures. Follow safety procedures and use proper tools for steel pipe handling and joining.
Usage recommendations
Use the coupling in combination with SANHA-THERM compliant components to ensure material compatibility. Verify system pressure and temperature ratings before installation, and perform a pressure test after assembly. Store fittings in a dry environment to avoid surface corrosion prior to installation.

## FAQ

### How much does the SANHA reducer coupling SANHA-THERM C-Stahl d28x18 cost, and is it available for purchase?

The price is 11.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 15.07.2026 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

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