Product Introduction
Galvanized Hollow Pipe is made of high-quality carbon steel strip, which is cold-bent, high-frequency ERW welded, and then hot-dip galvanized (HDG) or pre-galvanized (GI) treated.

Technical Specifications
|
Item |
Specification |
|
Product Name |
Galvanized Hollow Pipe |
|
Shape |
Square / Rectangular |
|
Manufacturing Process |
Cold Roll Forming + ERW + HDG / GI |
|
Material |
Carbon Steel |
|
Steel Grade |
Q195, Q235, Q355, ASTM A500, S235JRH, S355J2H |
|
Size |
20 × 20 – 400 × 400 mm |
|
Wall Thickness |
1.0 – 16.0 mm |
|
Length |
3 – 12 m or Customized |
|
Zinc Coating |
40 – 600 g/m² |
|
Standard |
ASTM A500, EN 10219, JIS G3466, GB/T 6728 |
|
Processing |
Cutting, Punching, Beveling |
|
Inspection |
Chemical, Mechanical & Dimensional Inspection |
|
Certificates |
ISO 9001, EN 10204 3.1 MTC, SGS/BV (Optional) |
|
Packaging |
Export Standard Packing |
Available Steel Grades & Standards
Multiple Steel Grades: Available in Q195, Q235, Q355, ASTM A500, S235JRH, S355J2H, and other materials to meet diverse engineering needs.
International Standard Production: Supports international standards such as ASTM, EN, JIS, and GB; customization based on customer drawings and technical requirements is also available.
Manufacturing Process
Raw Material Inspection: Selects high-quality carbon steel strips to ensure stable and reliable raw material quality.
Automated Production: Employs cold bending, high-frequency ERW welding, sizing and straightening, and galvanizing processes to achieve stable production.
Full-Process Inspection: Each batch of products undergoes dimensional, performance, zinc coating, and appearance inspections to ensure compliance with standards.

Custom Manufacturing
Custom Specifications: Supports customization of dimensions, wall thickness, length, and steel grade.
Deep Processing Services: Supports cutting, punching, beveling, and other processing.
OEM Services: Supports logo, label, packaging, and drawing production.


Packaging & Shipping
Export Packaging: We use steel strapping, waterproof packaging, and standard export packaging to reduce transportation damage.
Global Shipping: We support container and LCL (Less than Container Load) shipping and optimize container loading solutions to reduce logistics costs.
Why Choose Us?
1. Advanced Production Equipment
We operate multiple high-frequency welded (HFW) pipe production lines capable of manufacturing round, square, and rectangular steel pipes. We are also equipped with cold-roll forming units for producing custom-profile sections. Downstream processing capabilities include precision cutting-to-length, punching, straightening, and surface treatment systems.
2. Guaranteed Quality
We supply certified products that meet standards such as EN 10219, ASTM A500, and ISO 1461 to engineering contractors and end-users.
3. Comprehensive Standards and Documentation
We manufacture products in accordance with ASTM, EN, DIN, JIS, and GB standards. We provide MTCs and EN 10204 3.1 certificates, and support third-party inspections by agencies such as SGS, BV, and TÜV.
FAQ
Q: What specifications are supported?
A: Standard specifications and non-standard customization are supported.
Q: What standards are applicable?
A: ASTM, EN, JIS, GB, and other standards are supported.
Q: Can the zinc coating thickness be customized?
A: Yes, it can be customized according to project requirements.
Q: Do you support OEM?
A: Customization of drawings, branding, and packaging is supported.
Q: Do you provide MTC?
A: EN 10204 3.1 MTC can be provided.
Q: Do you support third-party inspection?
A: SGS, BV, Intertek, and other inspection agencies are supported.
Q: What is the delivery time?
A: Fast delivery for standard specifications; customized orders are produced according to schedule.
Q: How to get a quote?
A: Provide specifications, quantity, material, and destination port for a quick quote.
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