Folding wired hose
Metal conduit (English name: Metal Conduit) is made of 304 stainless steel or 301 stainless steel, and is used as a protective tube for wires, cables, and automated instrument signals. The specifications range from 3mm to 150mm. Ultra-small diameter metal hoses (inner diameter 3mm-25mm) are mainly used for the protection of sensing lines in precision optical scales and industrial sensor lines, with good flexibility, corrosion resistance, high temperature resistance, wear resistance, and tensile strength.
Folding corrugated hose
Metal hoses are important connecting components in engineering technology, consisting of a corrugated flexible tube, a mesh sleeve, and connectors. They serve as compensation components, sealing components, connecting components, and damping components in various gas and liquid pipeline systems, as well as in length, temperature, position, and angle compensation systems. They are used in aerospace, petrochemicals, mining electronics, machinery shipbuilding, medical and health, light textile electronics, energy construction, and other fields. The national standard for metal hoses is "General Technical Conditions for Corrugated Metal Hoses" (GB/T14525-2010), implemented from October 1, 2011.
Corrugated metal hoses (referred to as corrugated tubes) are high-quality flexible pipes in modern industrial pipelines. They mainly consist of a corrugated tube, a mesh sleeve, and connectors. The inner tube is a thin-walled stainless steel corrugated tube with a spiral or annular waveform. The outer mesh sleeve of the corrugated tube is woven from stainless steel wire or steel strip according to certain parameters. The connectors or flanges at both ends of the hose are matched with the connectors or flanges of the customer's pipeline.
The structural forms of connectors are generally divided into three categories: spiral, flange, and quick-release:
1. Threaded type: For metal hoses with a diameter of less than 50 mm, threaded connectors are mainly used under higher working pressures. After tightening the threads, the inner and outer tapered surfaces of the two connectors are tightly fitted to achieve sealing. The cone angle is generally 60 degrees, but 74 degrees is also used. This structure has good sealing performance, but during installation, the concentricity of the two mating parts must be ensured. To solve the problems of repeated disassembly and installation and difficulty in concentricity often encountered in practical engineering, the connector can also be designed as a combination of a tapered surface and a ball head.
2. Flange type: For metal hoses with a diameter of 25 mm or more, flange-type connectors are mainly used under general working pressures. They are sealed by means of a tenon-groove fit. The live flange, which can rotate radially and slide axially, connects the two bodies under the action of the tightening bolt tension. This structure has good sealing performance, but the processing difficulty is high, and the sealing surface is easily damaged. In special occasions where quick disassembly is required, the hole through which the fastening bolt passes can be split to form a quick-release flange.
3. Quick-release type: For various metal hoses with a diameter of less than 100 mm, quick-release connectors are generally used where quick assembly and disassembly are required. They usually use an "O"-ring seal made of fluoroplastics or special rubber. After the handle is moved to a certain angle, the claw fingers equivalent to multiple threads are locked; the "O"-ring is pressed tighter, and its sealing performance is better.
Suitable for fire scenes, battlefields, and other occasions where quick assembly and disassembly are required. Within a few seconds, a set of connectors can be connected or disassembled without any special tools.
