How does a stainless steel double external thread extension pipe ensure pressure-bearing reliability during hydraulic workstation expansion?
Publish Time: 2025-09-16
In modern industrial hydraulic systems, the hydraulic workstation serves as the core of power transmission. The stability, sealing, and pressure resistance of its pipe connections are directly related to the safe operation of the entire system. With increasing equipment complexity and the demand for layout flexibility, stainless steel double external thread extension pipes, as key connection components, are widely used in hydraulic system expansion and adjustment. Double external thread extension pipes made of 304 stainless steel, with their excellent material properties and sophisticated structural design, demonstrate exceptional pressure-bearing reliability under high-pressure, high-frequency, and harsh operating conditions, making them a trusted choice in the industrial hydraulics industry.1. 304 Stainless Steel: Dual Guarantee of High Strength and Corrosion Resistance304 stainless steel is one of the most widely used austenitic stainless steels, offering excellent tensile strength, ductility, and corrosion resistance. In hydraulic systems, the media are often chemically active and subjected to high pressure for extended periods. Ordinary carbon steel or inferior alloys are prone to rust, pitting, or stress cracking, resulting in pipe wall thinning and reduced pressure-bearing capacity. 304 stainless steel remains stable in most industrial environments, effectively preventing structural failure caused by corrosion, fundamentally ensuring the extension pipe's reliable pressure-bearing performance during long-term use.2. 3.2mm Wall Thickness: Scientific Design Enhances Pressure ResistancePressure resistance is closely related to pipe wall thickness. This stainless steel double external thread extension pipe features a 3.2mm thickened wall design, far exceeding the wall thickness standard for ordinary hydraulic pipe fittings. According to the stress calculation formula for thin-walled cylinders, the thicker the pipe wall, the lower the circumferential stress under internal pressure, and the greater the burst resistance. In actual testing, this type of extension pipe can typically withstand static pressures exceeding 30 MPa and maintain structural integrity even under transient shock pressures. This design is particularly suitable for high-pressure hydraulic workstations such as construction machinery, injection molding machines, and hydraulic stamping equipment, ensuring that it does not deform or crack under dynamic conditions of frequent pressurization and depressurization.3. Double External Thread Structure: Enhanced Connection Strength and Sealing StabilityUnlike traditional single-end or internally threaded fittings, the double external thread design allows both ends of the extension tube to be threaded directly into internally threaded hydraulic fittings or transition joints. This connection not only simplifies installation but, more importantly, distributes tensile and shear stresses on the tube through dual-end fixation, preventing loosening or breakage caused by single-point stress. Furthermore, the threads are precision cold-forged or CNC-turned to ensure that the pitch, thread angle, and tolerances meet ISO or NPT standards. Combined with metal-to-metal cone-shaped or flat-face sealing gaskets, this creates a leak-free, reliable connection, further enhancing overall pressure-bearing performance.4. Explosion-Proof Design and Fatigue Strength OptimizationIn high-pressure hydraulic systems, pipe bursts not only impact equipment operation but can also potentially lead to safety incidents. This extension tube was designed with explosion-proof requirements in mind: 304 stainless steel has excellent toughness, making it less susceptible to brittle fracture; the thickened tube wall effectively inhibits crack propagation; and the tube body has no welded seams, eliminating stress concentration and potential defects at these welds. Furthermore, before shipment, the product undergoes rigorous hydraulic burst testing and pulse fatigue testing, simulating thousands of pressure cycles to ensure structural integrity under long-term, frequent pressure.5. Wide Application and System CompatibilityStainless steel double external thread extension pipes are widely used in hydraulic workstations for pipe extension, equipment relocation, and repair and replacement. Their standardized thread specifications are compatible with mainstream hydraulic connectors, facilitating quick integration. Whether in high-temperature workshops, chemical environments, or outdoor equipment, 304 stainless steel consistently demonstrates its pressure-bearing strength.In summary, the stainless steel double external thread extension pipe, made of 304 stainless steel with a wall thickness of 3.2 mm, utilizes a multi-faceted design featuring high-quality materials, thickened pipe walls, precision threads, and a weldless construction to comprehensively enhance pressure-bearing reliability in hydraulic workstation extensions. It serves not only as an extension for pipe connections but also as a guardian, ensuring safe and efficient system operation. In industrial applications requiring high reliability and long life, this type of extension pipe plays an irreplaceable role.
