How Is Our SHS Pipe？

Square Hollow Section (SHS) is a cornerstone of modern structural engineering—and our SHS pipes stand out not just for performance, but for the rigorous, precision-driven manufacturing process that defines them. To answer “how is our SHS pipe,” we start with what makes it reliable: a 5-step production workflow designed to eliminate defects and ensure consistency, paired with high-strength low-alloy (HSLA) steel that balances durability and weight efficiency.

First, raw material selection & preparation: We source mill-certified HSLA steel coils (with minimum yield strength of 355MPa) and subject each batch to chemical composition testing (via 光谱分析 /spectroscopic analysis) and mechanical property checks (tensile and impact tests) to rule out impurities. Next is cold forming: The steel coils are uncoiled, flattened, and fed into a continuous roll-forming machine, where they’re gradually bent into a circular tube shape—this cold-working process enhances the steel’s hardness without compromising ductility.

Third, welding: We use high-frequency induction welding (HFIW)—a advanced technique that heats the steel’s edges to 1,200–1,300°C (no filler metal needed) and fuses them seamlessly. Post-welding, a deburring tool removes excess material from the inner/outer welds, ensuring smooth surfaces and uniform wall thickness (tolerances within ±0.1mm). The fourth step is shaping & sizing: The circular tube is passed through a series of precision dies, which press it into a square cross-section—we calibrate the dies hourly to maintain exact dimensions (from 20x20mm to 200x200mm, as per your needs).

Finally, finishing & quality assurance: Each SHS pipe undergoes hydrostatic pressure testing (to 1.5x its rated working pressure) to detect leaks, followed by surface treatment—choose from hot-dip galvanizing (for 50+ years of corrosion resistance in outdoor/ humid environments) or powder coating (for a scratch-resistant, customizable finish). We also conduct random ultrasonic testing to check for internal weld defects, ensuring every pipe meets ASTM A500 or EN 10219 standards.

As for “how much you know about SHS,” its hollow design—enabled by this precise 工艺 —cuts weight by 30% vs. solid square bars, slashing transport costs while retaining full load-bearing capacity. Whether you’re building construction frames, industrial racks, or custom furniture, our SHS pipes deliver the strength, consistency, and customization you need to keep projects on track.