Product Introduction
Black Square Steel Pipe is made from high-quality carbon steel strip and manufactured through cold forming and high-frequency resistance welding (ERW) processes, resulting in excellent strength, weldability, and dimensional stability.
Technical Specifications
|
Item |
Specification |
|
Product Name |
Black Square Steel Pipe / Square Hollow Section (SHS) |
|
Manufacturing Process |
ERW / Cold Formed |
|
Material |
Carbon Steel |
|
Steel Grade |
Q235B, Q355B, S235JR, S355J2H, ASTM A500 |
|
Outer Size |
10×10 mm - 400×400 mm |
|
Wall Thickness |
0.8 mm - 20 mm |
|
Length |
5.8 m, 6 m, 11.8 m, 12 m / Customized |
|
Surface Finish |
Black Bare / Oiled / Black Painted |
|
End Finish |
Square Cut / Deburred / Beveled |
|
Standard |
ASTM A500, EN 10219, JIS G3466, GB/T 6728 |
|
Tolerance |
According to Standard Requirements |
|
Application |
Construction, Machinery, Structural Engineering |
Manufacturing Process
Raw Material Inspection: Chemical composition and mechanical property testing of steel to ensure materials meet production standards.
Cold Forming: Multi-pass forming process for square cross-sections to ensure dimensional accuracy and corner quality.
ERW High-Frequency Welding: Pipe connections are completed using high-frequency resistance welding, improving production efficiency and welding stability.
Straightening and Inspection: Dimensional correction, straightness control, and weld inspection are performed to ensure consistent product quality.
Surface Treatment: Rust-preventive oil, black paint, and other treatment options are available according to customer requirements.
Customization Capability
Size Customization: Supports customization of outer diameter, wall thickness, length, and special specifications to meet diverse engineering needs.
Material Customization
Supported: Q235B, Q355B, S235JR, S355J2H, ASTM A500
Surface Treatment Customization
Supported: Black Bare, Oiled, Black Painted, Galvanized
Packaging Customization
Supported: Steel Bundle, Waterproof Packing, Export Marking
Applications
Building Structures: Used for steel structure workshops, building frames, bridge supports, and warehouse structures.
Machinery Manufacturing: Used for equipment frames, mechanical structural components, and automated equipment supports.
Industrial Engineering: Used for industrial platforms, pipe supports, and equipment foundation structures.
Other Applications: Suitable for fencing, agricultural equipment, and various structural engineering projects.
Packaging & Delivery
Export Standard Packaging: Employs steel strapping, waterproof packaging, and product labeling to reduce transportation damage.
Container Optimized Loading: Optimized packaging according to 20GP and 40HQ container requirements to improve transportation efficiency.
Flexible delivery options: Supports mass production, ocean shipping, and customized delivery schedules.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a steel pipe manufacturer with production equipment, testing systems, and export service capabilities.
Q: What standards can you produce?
A: We support international standards such as ASTM, EN, JIS, and GB.
Q: What is your MOQ?
A: It depends on specifications, materials, and order requirements. Bulk purchases are supported.
Q: Can you provide customized sizes?
A: Yes, we support customization of dimensions, lengths, materials, and surface treatments.
Q: What materials are available?
A: We mainly provide carbon steel materials such as Q235B, Q355B, S235JR, S355J2H, and ASTM A500.
Q: Do you provide samples?
A: We can provide samples upon request for quality confirmation.
Q: What affects the price?
A: The price is mainly affected by material, specifications, quantity, surface treatment, and packaging method.
Q: How do you control quality?
A: We ensure stable quality through raw material testing, production monitoring, and outgoing inspection.
Q: Can you support third-party inspection?
A: Yes, we support third-party inspections by SGS, BV, Intertek, and other reputable inspection agencies.
Q: Can you provide OEM service?
A: We support customization of specifications, packaging, and processing methods.
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