Products

Looking to buy high-strength Structural Round Steel Bar For Engineering Use directly from Tianjin Shunchen? Our hot rolled steel bars (Φ5.5mm–250mm) comply strictly with GB/T702-2017 Group I standards (tolerance ±0.15mm). Engineered for machinery, construction, and automotive applications, we offer custom lengths, factory-direct pricing, and full technical guidance.

Shunchen High Strength Steel Round Bar For Engineering is available in Q235B, Q355B, Q355D, 45#, and 40Cr steel grades, with diameters from 5.5 to 250 mm. Manufactured by hot rolling, it supports structural components, shafts, gears, and machined engineering parts. Standard lengths range from 4 to 12 meters, with customized sizes and cutting services available for different engineering requirements.

Buy ShunChen Cold Drawn Steel Bar With Tight Dimensional Tolerance for precision manufacturing. Featuring ±0.02mm tolerance and Ra≤1.6μm surface finish, this cold drawn round bar delivers superior strength for CNC parts. Wholesale sourcing available with custom sizes, grades, and OEM supply.

ShunChen smooth surface round steel bar for machining are cold drawn with diameter tolerance ±0.02mm and surface roughness Ra≤1.6μm. Available in 3–100mm diameter, 2–6m length, cut to 12m, steel grades 10#, 20#, 45#, 40Cr, 304. They reduce machining allowance and suit automotive and precision machinery parts.

Shunchen specializes in large diameter Spiral Welded Steel Pipe for water transmission. Compliant with AWWA C200 and API 5L, our pipes feature non-toxic internal linings and 3PE anti-corrosion coatings. We offer diameters up to 3620mm for safe, long-distance fluid transport.

Looking for a reliable large diameter spiral welded pipe manufacturer? Shunchen supplies Large Diameter Spiral Welded Pipe for Infrastructure with outer diameters from 711 mm to 3620 mm and wall thicknesses from 6 mm to 60 mm. The pipes are manufactured using spiral forming and double-sided submerged arc welding, and can be produced to API 5L, GB/T9711, GB/T3091 and SY/T5037.