Steel ground rod

roundsimple

Overview
ST52 Hollow Chrome Plated Rod (ID Not Honed) is a lightweight hard-chrome, hollow rod designed for cost-efficient hydraulic and guiding applications. The product combines a hard chrome-plated outer diameter with a raw, non-honed inner diameter to deliver corrosion and wear resistance while reducing manufacturing cost where internal finish is non-critical.

Product Summary
Manufactured from seamless ST52 (E355) steel tubes, the rod features a precision-ground OD with hard chrome plating (20–30 μm) and a non-honed ID. It is intended for uses where internal diameter precision or sealing is not required and where the tube functions as a structural element or low-friction guide. Typical applications include hollow hydraulic bars, suspension rods, lightweight piston rod systems, automation guide tubes, boom arms and telescopic hydraulic components.

Basic Product Information

• Model: Hollow Chrome Plated Rod
• Brand: EAST AI
• Material: ST52 (E355) seamless steel
• Length (listed on page): Max. 15 m
• Straightness: ≤ 0.2/1000 mm (≤ 0.2 mm/m)
• Packing: Anti-rust oil applied to rod surface; each rod wrapped in paper and packed in wooden case; customizable on request
• Roughness (OD): Ra ≤ 0.2 μm

Key Description Points

• Surface: Hard chrome plated on OD only (chrome thickness 20–30 μm) for corrosion and wear resistance.
• ID Condition: Raw, not honed — cost-effective where ID tolerance or sealing is not necessary.
• OD Precision: OD ground to ISO f7 tolerance for compatibility with seals, bushings or linear motion components.
• Surface Hardness: HRC 50–60 on the chrome surface.
• Tensile Strength: ≥ 600 MPa.
• Weight Advantage: Hollow structure reduces weight while maintaining bending resistance — beneficial for mobile and suspension applications.

Key Specifications (table)
Material — ST52 / E355 Seamless Steel
Surface Finish — Hard Chrome Plated (OD only)
Chrome Thickness — 20–30 μm
Surface Roughness (OD) — Ra ≤ 0.2 μm
ID Condition — Raw, Not Honed
OD Tolerance — ISO f7
Straightness — ≤ 0.2 mm/m
Surface Hardness — HRC 50–60
Tensile Strength — ≥ 600 MPa
Max Length (listed in table) — Up to 6 meters (custom lengths available)

Why Choose ST52 Hollow Chrome Plated Rod (ID Not Honed)?

• Cost-Effective Design: Non-honed ID reduces production costs for non-sealing applications.
• High Outer Precision: Ground OD and hard chrome plating ensure dimensional compatibility and surface durability.
• Corrosion & Wear Resistance: Chrome layer protects against surface damage, moisture and abrasive environments.
• Versatile Use Cases: Suitable for hollow hydraulic bars, guide shafts and basic fluid-pass-through components.
• Weight Reduction: Hollow construction lowers weight while maintaining bending resistance for suspension and mobile equipment parts.

Common Applications

• Lightweight piston rod systems
• Guide tubes in automation and robotics
• Boom arms in lifting equipment
• Telescopic hydraulic components
• Suspension bars in agricultural or construction machinery
• Fluid pass-through shafts (non-sealing)

Technical characteristics / specifications

• Material: ST52 / E355 seamless steel
• Surface finish: Hard chrome plated on OD only
• Chrome thickness: 20–30 μm
• Surface roughness (OD): Ra ≤ 0.2 μm
• ID condition: Raw, not honed
• OD tolerance: ISO f7
• Straightness: ≤ 0.2 mm/m (≤ 0.2/1000 mm)
• Surface hardness: HRC 50–60
• Tensile strength: ≥ 600 MPa
• Max length (page entries): Max. 15 m (listed) and in table up to 6 m (custom lengths available)
• Packing: Anti-rust oil on rod surface; each rod wrapped in paper and packed in wooden case; customizable