Metal thread Dn-20

DN20 × 3/4-inch male weld-on steel threaded connector

🔩 The DN20 metal threaded connector is a short steel pipe section used to create a detachable threaded connection on steel pipework.

One end has a 3/4-inch male pipe thread, while the plain end is welded to the pipeline.

📏 Size designation

• DN20 — 20 mm nominal bore;
• 3/4 inch — male pipe-thread size;
• typical steel-pipe outside diameter — approximately 26.8 mm.

🚰 Applications

• cold- and hot-water supply;
• heating systems;
• technical pipelines;
• compressed-air lines;
• connection of valves, filters and threaded couplings.

🛡️ Pressure and temperature

Common versions are rated up to 1.6 MPa, or 16 bar. Exact pressure and temperature limits depend on the pipe wall, material and manufacturer.

📐 Typical dimensions

• thread — 3/4-inch male;
• pipe outside diameter — approximately 26.8 mm;
• length — approximately 30 mm;
• wall thickness — approximately 2.8 mm.

Extended versions are also manufactured, so the actual product length must be confirmed.

🔥 Installation

1. Isolate the pipeline and release all pressure.
2. Clean the pipe and weld end.
3. Align the connector with the pipeline.
4. Complete the welded joint.
5. Inspect and protect the weld.
6. Apply an appropriate thread sealant.
7. Install the valve or other threaded equipment.
8. Test the joint for leaks.

✅ Key advantages

• transition from DN20 welded pipe to 3/4-inch male thread;
• durable steel construction;
• suitable for water and heating systems;
• easy connection of threaded valves and equipment;
• compact dimensions;
• allows connected equipment to be removed.

⚠️ Confirm before ordering

• male or female thread;
• 3/4-inch thread size;
• overall length;
• wall thickness;
• black or galvanised steel;
• working pressure;
• operating temperature;
• compatibility with the working medium.

⚠️ Important: the exact length, coating and operating ratings of the stocked product must be confirmed before publication.