A106 A53 A36 Carbon Steel Special Section Pipe Tube

Superior Formability for Complex Cross-Sections

• Low-carbon steel has excellent plasticity, enabling precise shaping into complex special cross-sections via both cold and hot processing:

• Cold processing (cold drawing/cold rolling): Achieves high dimensional accuracy (tolerance ≤ ±0.5mm) and smooth surface finish (Ra ≤ 6.3μm), ideal for small-to-medium-sized pipes (e.g., 20×20mm square pipes).

• Hot processing (hot extrusion/hot bending): Suitable for large-sized pipes (e.g., 200×100mm rectangular pipes) or thick-walled sections, as heat softens the steel to avoid cracking during forming.

• The material’s low hardenability also means post-forming heat treatment is rarely required, reducing production costs and cycle time.

Cost-Effectiveness for Large-Scale Applications

• Compared to stainless steel or alloy steel special section pipes, A106/A53/A36 carbon steel variants have 30%–50% lower raw material costs. Their mature production processes (e.g., continuous extrusion lines) and high yield rates (≥95%) further lower overall costs.

• For projects requiring large quantities (e.g., building structural frames, municipal pipeline networks), the cost advantage is particularly significant—total procurement costs are only 10%–30% higher than standard round carbon steel pipes.

Easy Weldability & Connection Compatibility

• Low carbon equivalent (CEV ≤ 0.45%) minimizes weld cracking risk. The pipes can be welded using standard methods (SMAW, GMAW, TIG) without complex pre-heating or post-weld heat treatment.

• Welded joints retain 85%–95% of the base metal’s strength, ensuring leak tightness for fluid transmission or structural stability for load-bearing applications.

• They are also compatible with standard fittings (e.g., square flanges, rectangular tees) and connection methods (grooved joints, threaded joints), simplifying on-site installation and integration with existing systems.

special-shaped steel tube

Special-shaped seamless steel pipe is with other cross-sectional shapes except round pipes. According to the different cross sectional shapes and sizes of steel pipes, they can be divided into equal wall thickness special-shaped seamless steel pipes (codenamed D), unequal wall thickness special-shaped seamless steel pipes (codenamed BD), and variable diameter special-shaped seamless steel pipes (codenamed BJ). Special-shaped seamless steel pipes are widely used in various structural parts, tools and mechanical parts. Compared with round pipes, special-shaped pipes generally have larger moments of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce the weight of the structure and save steel.