D Shaped Steel Pipe

D-shaped steel pipe is a special-shaped steel pipe manufactured using seamless cold drawing or precision cold forming processes. Its cross-section consists of planes and arcs.

Raw Material Inspection: We select steel that meets international standards and test its chemical composition and appearance to ensure stable product quality.

Precision Forming: We use cold drawing or precision cold forming processes to process D-shaped sections, ensuring dimensional accuracy, uniform wall thickness, and cross-sectional consistency.

Heat Treatment: We perform annealing, normalizing, or quenching and tempering treatments according to product requirements to improve strength, toughness, and subsequent processing performance.

Finishing: We complete straightening, sizing, and surface treatment to ensure the product has good straightness and appearance quality.

Finished Product Inspection: We conduct dimensional, mechanical property, UT, ET, hydrostatic, and surface quality tests to ensure the product meets international standards before packaging and shipping.

Black: Suitable for machining, welding, and structural manufacturing.

Pickled & Oiled: Removes oxide scale and forms a rust-resistant protective layer, suitable for transportation and warehousing.

Bright: High surface finish, suitable for precision parts and exterior components.

Hot-Dip Galvanized: Improves corrosion resistance, suitable for outdoor and humid environments.

Powder Coating: Further enhances weather resistance and appearance quality, suitable for industries such as furniture and fitness equipment.

Size Customization: Supports customization of dimensions, wall thickness, length, tolerances, and cross-sectional shape.

Material Customization: Supports production of different steel grades, grades, and international standards.

Further Processing Services: Provides processing services such as cutting, punching, chamfering, bending, and welding, reducing subsequent processing steps for customers.

Packaging Customization: Supports OEM marking, labeling, and export packaging solutions to meet different market demands.

Automotive Manufacturing: Used for structural components such as vehicle frames, seat frames, crash beams, and chassis supports.

Construction Machinery: Used for equipment frames, protective structures, hydraulic supports, and mechanical parts.

Building Structures: Used for steel structures, curtain wall supports, railings, and framing systems.

Furniture and Fitness Equipment: Used for metal furniture, shelving, treadmill uprights, and fitness equipment frames.

Agricultural and Automation Equipment: Used for agricultural machinery, conveying equipment, and structural components for automated production lines.

Export Standard Packaging: Employs export packaging methods such as steel strapping, rust-proof packaging, plastic end caps, and wooden crates to effectively protect products during transport.

Multiple Transportation Modes: Supports container, bulk carrier, and rail transport; logistics solutions can be customized according to order requirements.

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.