High-pressure connecting fittings, breaking through the challenges of high-pressure transmission with technological innovation

High pressure and harsh working conditions such as mine water supply, grouting, and tailings filling require extremely high safety requirements for pipeline connections. Donghong Co., Ltd. relies on its profound technological accumulation to create a full range of high-pressure connecting pipe solutions suitable for wide pressure ranges, safeguarding pipeline safety with excellent quality.

Analysis of Three Core Solutions

01 High pressure threaded connection -10.0MPa reliable guarantee, fast installation, and space friendly balance

Specially designed for high-pressure wear-resistant circular pipes and steel wire mesh skeleton polyethylene composite pipes, providing two connection structures: metal thread and non-metal thread. The metal thread is also compatible with steel wire fiberglass double reinforced pipes.

Adopting O-ring axial sealing technology, the sealing effect is reliable and the installation is fast, with a maximum pressure of 10.0MPa, meeting the requirements of high-pressure conveying conditions.

On site connection and installation are fast and easy to operate, which can significantly shorten the construction period and save labor costs.

The hanging installation in underground mines occupies a small space and is suitable for environments with narrow tunnels and limited space; The installation of tunnel perforation is convenient and fast.

02 Integrated flange connection - the anchor of high-pressure working conditions and the guarantee of long-term stable operation

Flanging locking structure - using integrated flange flanging technology to lock the steel wire reinforcement layer, combined with high-pressure retaining ring structure, effectively resisting the risk of flexible tearing at the flanging diameter.

Enhanced New Material Fusion - The fusion of flanged end faces enhances new materials, significantly improving hardness and wear resistance, effectively preventing high-pressure leakage.

Wide pressure range adaptation - with a pressure bearing capacity covering 4.0MPa-10MPa, it is widely suitable for various harsh working conditions such as mining water supply, grouting, tailings filling, etc.

03 New High Voltage Connection -12MPa Extreme Verification · Technological Breakthrough and Cost Reduction and Efficiency Increase

Specially designed for DN110-DN250mm steel wire mesh skeleton polyethylene composite pipes, with an application pressure of up to 12MPa, the product has been successfully exported to overseas markets.

The laboratory has conducted 12MPa performance testing on DN200 and DN225 models under 60 ℃ and 1.2PN working conditions for over 300 hours, verifying reliability under extreme conditions without the need for metal cores on the inner wall of the steel wire pipe. This effectively reduces material and labor costs while ensuring pressure performance, achieving cost reduction and efficiency improvement.

Each of the three high-pressure connection schemes has its own focus: threaded connection emphasizes fast and flexible performance, flange connection emphasizes long-term stability, and the new type of connection achieves ultimate pressure resistance. Only by accurately matching according to the requirements of the working conditions can the maximum value be realized.

——Let smart pipelines change human life