Price of Used H Beam Shot Blasting Machine: A Comprehensive Guide
1. Brief Profile
Used H beam shot blasting machines are pre-owned industrial systems designed for surface preparation of H-shaped steel beams, I-beams, and other structural profiles. These machines utilize centrifugal blast wheels to propel abrasive particles (e.g., steel shots, ceramic beads) at high velocities, removing rust, mill scale, and welding residues while creating a uniform surface profile (Ra 40–80 μm) for optimal paint adhesion.
Originally priced between
30,000and
300,000 for new models, used H beam shot blasting machines offer significant cost savings, with prices typically ranging from
3,000to
150,000, depending on age, condition, capacity, and brand. The secondary market includes refurbished units from reputable manufacturers (e.g., Qingdao Huaxu, Jiangsu Dacheng) and older models from decommissioned factories.
Key drivers of used machine pricing include:
Age and Hours of Operation: Machines under 5 years old with low usage (e.g., <2,000 hours) command higher prices.
Technological Features: PLC controls, automatic abrasive recycling, and dust collection systems add value.
Brand Reputation: Machines from Qingdao Huaxu or Jiangsu Dacheng retain residual value due to reliability.
Geographic Demand: Higher prices in regions like the U.S. and Europe versus emerging markets.
2. Application
Used H beam shot blasting machines are critical in industries requiring high-quality surface preparation for structural steel components:
Steel Fabrication and Construction:
Pretreatment of H beams for building frameworks, stadiums, and industrial facilities.
Removal of mill scale and welding slag to achieve ISO 8501-1 Sa2.5–3 cleaning standards.
Bridge and Infrastructure Projects:
Surface preparation of girders, trusses, and piers for bridges and viaducts.
Cleaning of welded joints and cut edges to ensure structural adhesion.
Offshore and Marine Engineering:
Pretreatment of H beams for offshore platforms and ship hulls to withstand harsh marine environments.
Removal of salt deposits and oxide layers for cathodic protection compatibility.
Energy Sector:
Cleaning of steel towers for wind turbines and transmission lines.
Surface profiling of pipeline supports and storage tank frames.
Railway and Transportation:
Pretreatment of railway tracks, crane girders, and wagon frames to reduce wear.
Edge rounding of laser-cut H beams to minimize stress concentrations.
Heavy Machinery Manufacturing:
Surface preparation of crane booms, excavator arms, and mining equipment frames.
3. Features
Used H beam shot blasting machines retain core features of new systems, albeit with potential wear:
Blast Wheel Technology:
Twin or quad centrifugal turbines (Ø500–800 mm) with direct-drive motors for abrasive velocities up to 90 m/s.
Adjustable throw angles (30°–90°) to target flanges, webs, and edges uniformly.
Roller Conveyor System:
Double-chain-driven rollers with hardened surfaces to support H beams weighing up to 5 tons per meter.
Variable speed control (0.5–3 m/min) for precise process timing.
Abrasive Recycling:
Screw conveyors and bucket elevators transport used abrasives to a multi-stage separator.
Air-wash technology removes dust and broken shots, ensuring consistent abrasive quality.
Dust Collection:
Pulse-jet bag-type dust collectors with >99.5% efficiency, compliant with EPA and ATEX standards.
Optional cartridge filters for fine particle capture (≥1 μm).
Control Systems:
PLC-based interfaces with touchscreen HMI for real-time monitoring of blast parameters.
Automatic fault diagnosis and alarms for uninterrupted operation.
Safety Enhancements:
Emergency stop buttons, interlock systems, and soundproofing panels (<85 dB).
4. Main Parts
A used H beam shot blasting machine comprises the following components, which may show varying degrees of wear:
Blast Chamber:
Enclosed steel structure housing 4–8 blast wheels.
Lined with Mn13 wear plates or rubber sheets to protect against abrasive impact.
Roller Conveyor System:
Heavy-duty rollers (Ø250–400 mm) with hardened surfaces.
Double-chain drive mechanism with gear motors for smooth beam movement.
Blast Wheel Assembly:
High-speed turbines (2,900–3,200 RPM) with curved vanes.
Direct-drive motors (15–30 kW per wheel) for consistent performance.
Abrasive Recycling System:
Horizontal screw conveyors, bucket elevators, and air-wash separators.
Dust Collection Unit:
Pulse-jet bags or cartridge filters to capture fine particles.
Control Panel:
PLC-controlled operation with real-time monitoring of conveyor speed, blast intensity, and dust levels.
Safety Accessories:
Rubber curtains, observation windows, and fire extinguishers.
5. Basic Parameters
Used H beam shot blasting machines vary in specifications based on original design and usage history. Typical parameters include:
Parameter Specification
Workpiece Dimensions Height: 200–1,500 mm; Width: 100–800 mm; Length: ≤12 m
Conveyor Speed 0.5–3 m/min (adjustable)
Blast Wheel Power 4 × 15 kW to 6 × 22 kW (depending on model)
Abrasive Type Steel shots (S230–S550), stainless steel, or ceramic
Abrasive Capacity 2,000–6,000 kg
Dust Collector Capacity 20,000–50,000 m³/h (pulse-jet)
Noise Level ≤82 dB(A)
Power Supply 380V, 50Hz, 3-Phase
Total Weight 8,000–25,000 kg (depending on configuration)
Cleaning Efficiency ≥98% removal of mill scale (ISO 8501-1 Sa2.5–3)
Surface Profile Ra 40–80 μm (adjustable via abrasive size and speed)
Throughput Capacity 200–800 m²/hour (depending on beam thickness)
Price Range and Buying Tips
Budget Models (
3,000–
20,000):
Older machines (10+ years) with manual controls and basic dust collection.
Suitable for small workshops or low-volume operations.
Mid-Range Models (
20,000–
80,000):
5–10-year-old machines with PLC controls, automatic abrasive recycling, and pulse-jet dust collectors.
Ideal for medium-scale fabrication and bridge projects.
Premium Used Models (
80,000–
150,000):
Nearly new machines (under 5 years) with advanced features like variable frequency drives and energy recovery systems.
Best for high-volume offshore or energy sector projects.
Buying Tips:
Inspect wear parts (blast wheels, liners, conveyor rollers) for replacement costs.
Verify dust collector efficiency and compliance with local regulations.
Request maintenance logs and operational hours.
Negotiate warranties or post-sale technical support.
Conclusion
Used H beam shot blasting machines offer a cost-effective alternative to new systems, with prices ranging from
3,000to
150,000 based on age, condition, and features. These machines retain core functionalities like multi-wheel blasting, automated abrasive recycling, and dust collection, making them suitable for steel fabrication, bridge construction, and offshore projects. By evaluating key parameters (e.g., workpiece dimensions, blast wheel power) and inspecting wear components, buyers can secure reliable equipment that balances performance and affordability.
