Find HS Code and trade information for 液压挺杆配件lift support shocks, gas struts & assemblies

液压挺杆配件 (Lift Support Shocks, Gas Struts & Assemblies)

液压挺杆配件，通常被称为lift support shocks或gas struts & assemblies，是利用气体压力提供支撑或控制运动的机械元件。它们广泛应用于各种需要支撑、减缓或提升运动的应用场景。

材料

• 气缸 (Cylinder): 通常由碳钢制成，表面经过镀铬或喷漆处理以提高耐腐蚀性。不锈钢材质的气缸也用于更严苛的环境。
• 活塞杆 (Piston Rod): 通常采用硬铬处理的合金钢，以保证耐磨损和耐腐蚀性。
• 密封件 (Seals): 采用丁腈橡胶 (NBR)、氟橡胶 (FKM/Viton) 或聚四氟乙烯 (PTFE) 等材料，以确保气密性和耐油性。
• 气体: 通常使用氮气，因为它化学惰性，不易燃，且成本较低。
• 连接件 (End Fittings): 根据应用需求，可选用钢、铝合金或其他金属材料。

目的

• 支撑: 提供持续的支撑力，例如支撑汽车引擎盖、后备箱盖等。
• 减缓: 控制运动速度，防止快速关闭或打开，例如减缓家具门的关闭速度。
• 提升: 提供提升力，例如提升床垫、汽车座椅等。
• 定位: 将物体固定在特定位置。

功能

• 线性运动: 液压挺杆主要实现线性运动，通过活塞杆的伸缩来提供支撑或控制运动。
• 阻尼控制: 通过内部的阻尼结构，可以控制运动速度和缓动效果。
• 可调节力: 部分型号的液压挺杆可以调节支撑力的大小，以适应不同的应用需求。
• 气密性: 保持良好的气密性，确保支撑力稳定。

使用场景

• 汽车行业: 引擎盖、后备箱盖、汽车座椅、减震器等。
• 家具行业: 床垫、橱柜门、沙发、升降桌等。
• 工业设备: 各种机械设备的支撑、定位、减震等。
• 医疗设备: 医院病床、手术台等。
• 航空航天: 飞机舱门、起落架等。

常见类型

• 压缩型 (Compression Gas Struts): 主要用于提供压缩力，例如支撑引擎盖。
• 拉伸型 (Tension Gas Struts): 主要用于提供拉伸力，例如支撑后备箱盖。
• 锁紧型 (Locking Gas Struts): 可以锁定在特定位置，例如支撑床垫。
• 阻尼可调型 (Adjustable Damping Gas Struts): 可以调节阻尼力的大小，以适应不同的运动速度和负载。
• 带球头连接型 (Ball Joint Gas Struts): 连接端带有球头，可以实现多角度运动。
• 重型液压挺杆 (Heavy Duty Gas Struts): 用于承受较大负载的应用场景。
• 微型液压挺杆 (Mini Gas Struts): 用于小型设备或精密仪器。

The declared goods are accessories for hydraulic lifters, specifically lift support shocks, gas struts, and assemblies. These components are used in various applications requiring controlled movement and support, often found in automotive and mechanical systems.

The following HS codes are relevant based on the provided reference material:

• 8483308020: This HS code falls under Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof) and specifically covers “Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof: Bearing housings; plain shaft bearings: Other Bearing housings: Ball or roller bearing type”. While not a direct match, components within gas struts could be classified here if they involve bearing housings and related parts. The total tax rate is 59.5% (4.5% base tariff + 25% additional tariff, increasing to 30% after April 2, 2025).
• 8483308040: This HS code also falls under Chapter 84 and covers “Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof: Bearing housings; plain shaft bearings: Other Bearing housings: Other”. Similar to 8483308020, components within gas struts could be classified here if they involve bearing housings and related parts. The total tax rate is 59.5% (4.5% base tariff + 25% additional tariff, increasing to 30% after April 2, 2025).
• 7320103000: This HS code falls under Chapter 73 (Iron or steel articles). It specifically covers “Springs and leaves for springs, of iron or steel: Leaf springs and leaves therefor: Suitable for motor vehicle suspension: To be used in motor vehicles having a G.V.W. not exceeding 4 metric tons”. If the lift support shocks function as springs and are designed for vehicles under 4 metric tons, this code may apply. The total tax rate is 83.2% (3.2% base tariff + 25% additional tariff + 25% additional tariff for steel/aluminum products, increasing to 30% after April 2, 2025).
• 7320106060: This HS code also falls under Chapter 73 and covers “Springs and leaves for springs, of iron or steel: Leaf springs and leaves therefor: Suitable for motor vehicle suspension: Other Other”. If the lift support shocks function as springs and are not designed for vehicles under 4 metric tons, or their application is not specifically for motor vehicle suspension, this code may apply. The total tax rate is 83.2% (3.2% base tariff + 25% additional tariff + 25% additional tariff for steel/aluminum products, increasing to 30% after April 2, 2025).
• 7326908688: This HS code falls under Chapter 73 and covers “Other articles of iron or steel: Other: Other: Other: Other”. This is a broad category and could apply if the components do not fit into more specific classifications. The total tax rate is 82.9% (2.9% base tariff + 25% additional tariff + 25% additional tariff for steel/aluminum products, increasing to 30% after April 2, 2025).

Regarding HS codes 7320103000, 7320106060, and 7326908688, please note the need to verify the material (steel or aluminum) and may require documentation confirming the composition. Additionally, for HS codes 7320103000 and 7320106060, the Gross Vehicle Weight (G.V.W.) of the intended vehicle application is a critical factor in determining the correct classification.