Crafted from 1020 carbon steel (hot-finished for strength), it meets ASTM A53 standards and supports maximum static loads up to 1500 kg—making it ideal for weight-bearing fitness equipment. Available in diameters from 32mm to 114mm and wall thicknesses from 2.5mm to 8.0mm, it combines rugged construction with corrosion resistance (via phosphate coating and powder coating), ensuring longevity even in high-humidity gym environments.
Load-Bearing Capacity: 1020 carbon steel with 0.18–0.23% carbon content delivers tensile strength ≥ 414 MPa and yield strength ≥ 330 MPa. A 76mm OD tube with 5.0mm wall thickness supports 1200 kg static load (per SAE J2632 testing) and withstands 500 kg dynamic load (e.g., dropping weights onto a bench) without deformation.
Corrosion Resistance: Two-stage surface treatment: 1) Zinc phosphate coating (8–12μm, per ASTM D7699) for rust prevention; 2) Epoxy powder coating (60–100μm, per ISO 12944) for scratch and chemical resistance. Withstands 3000 hours of salt spray testing (ASTM B117) and resists sweat, cleaning chemicals, and moisture.
Dimensional Consistency: Outer diameter tolerance of ±0.5mm and wall thickness tolerance of ±5%, ensuring compatibility with standard gym equipment fittings (e.g., bolt-on brackets, weld-on plates). Laser measurement every 10cm guarantees uniform thickness, preventing stress concentration.
Processing Ease: Easily welded (MIG, TIG, stick welding) and drilled, with a smooth surface (Ra ≤ 2.0μm) that simplifies attachment of padding, grips, or weight plates. The tube’s straightness tolerance (≤ 1mm/m) ensures proper alignment of equipment components (e.g., parallel bars, squat rack uprights).
Strength Training Equipment: Used in squat racks, power racks, and bench press frames (commercial grade) for their load capacity. The tube’s rigidity prevents rack sway even with 300 kg on the barbell, meeting NSCA safety standards.
Functional Fitness Gear: Ideal for pull-up bars, dip stations, and battle ropes anchors. A 50mm OD tube with 3.0mm wall thickness supports 400 kg (per user + weight), suitable for CrossFit and HIIT studios.
Home Gym Equipment: Preferred for compact home gyms (e.g., foldable weight benches, mini power racks) due to its balance of strength and space efficiency. The corrosion-resistant coating handles occasional indoor humidity without rust.
Q: What is the maximum span between supports for a pull-up bar, and will it sag?
A: For a 50mm OD tube (3.0mm wall), the maximum span without sag is 1.8m (supports 150 kg user). For spans up to 2.4m, we recommend a 63mm OD tube (4.0mm wall) to maintain straightness—sag is limited to ≤ 2mm under full load.
Q: Can it be powder coated in custom colors, and what is the lead time?
A: Yes—we offer 20+ standard powder coat colors (e.g., black, silver, red) and custom color matching (minimum 50 pieces). Standard colors have a 3–5 working day lead time; custom colors take 7–10 working days.
Q: How does it compare to stainless steel in terms of cost and performance?
A: It costs 40–50% less than 304 stainless steel while offering comparable load capacity. Stainless steel has better corrosion resistance (5000+ hours salt spray), but our powder-coated carbon steel is sufficient for indoor gyms. For outdoor gyms, we offer a galvanized + powder coat option (3500 hours salt spray) at 20% above standard cost.
Crafted from 1020 carbon steel (hot-finished for strength), it meets ASTM A53 standards and supports maximum static loads up to 1500 kg—making it ideal for weight-bearing fitness equipment. Available in diameters from 32mm to 114mm and wall thicknesses from 2.5mm to 8.0mm, it combines rugged construction with corrosion resistance (via phosphate coating and powder coating), ensuring longevity even in high-humidity gym environments.
Load-Bearing Capacity: 1020 carbon steel with 0.18–0.23% carbon content delivers tensile strength ≥ 414 MPa and yield strength ≥ 330 MPa. A 76mm OD tube with 5.0mm wall thickness supports 1200 kg static load (per SAE J2632 testing) and withstands 500 kg dynamic load (e.g., dropping weights onto a bench) without deformation.
Corrosion Resistance: Two-stage surface treatment: 1) Zinc phosphate coating (8–12μm, per ASTM D7699) for rust prevention; 2) Epoxy powder coating (60–100μm, per ISO 12944) for scratch and chemical resistance. Withstands 3000 hours of salt spray testing (ASTM B117) and resists sweat, cleaning chemicals, and moisture.
Dimensional Consistency: Outer diameter tolerance of ±0.5mm and wall thickness tolerance of ±5%, ensuring compatibility with standard gym equipment fittings (e.g., bolt-on brackets, weld-on plates). Laser measurement every 10cm guarantees uniform thickness, preventing stress concentration.
Processing Ease: Easily welded (MIG, TIG, stick welding) and drilled, with a smooth surface (Ra ≤ 2.0μm) that simplifies attachment of padding, grips, or weight plates. The tube’s straightness tolerance (≤ 1mm/m) ensures proper alignment of equipment components (e.g., parallel bars, squat rack uprights).
Strength Training Equipment: Used in squat racks, power racks, and bench press frames (commercial grade) for their load capacity. The tube’s rigidity prevents rack sway even with 300 kg on the barbell, meeting NSCA safety standards.
Functional Fitness Gear: Ideal for pull-up bars, dip stations, and battle ropes anchors. A 50mm OD tube with 3.0mm wall thickness supports 400 kg (per user + weight), suitable for CrossFit and HIIT studios.
Home Gym Equipment: Preferred for compact home gyms (e.g., foldable weight benches, mini power racks) due to its balance of strength and space efficiency. The corrosion-resistant coating handles occasional indoor humidity without rust.
Q: What is the maximum span between supports for a pull-up bar, and will it sag?
A: For a 50mm OD tube (3.0mm wall), the maximum span without sag is 1.8m (supports 150 kg user). For spans up to 2.4m, we recommend a 63mm OD tube (4.0mm wall) to maintain straightness—sag is limited to ≤ 2mm under full load.
Q: Can it be powder coated in custom colors, and what is the lead time?
A: Yes—we offer 20+ standard powder coat colors (e.g., black, silver, red) and custom color matching (minimum 50 pieces). Standard colors have a 3–5 working day lead time; custom colors take 7–10 working days.
Q: How does it compare to stainless steel in terms of cost and performance?
A: It costs 40–50% less than 304 stainless steel while offering comparable load capacity. Stainless steel has better corrosion resistance (5000+ hours salt spray), but our powder-coated carbon steel is sufficient for indoor gyms. For outdoor gyms, we offer a galvanized + powder coat option (3500 hours salt spray) at 20% above standard cost.
