Structural Hollow Sections By Steel Grade

Tianjin Brisk Metalwork Co., Ltd. is one of the leading manufacturers and suppliers of structural hollow sections by steel grade in China. We have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy bulk durable structural hollow sections by steel grade from our factory.

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Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe

Yield values drop as wall thickness increases, so we quote the exact figure for your wall band on the mill certificate. Not every grade runs in every size. Tell us the section and wall you need and we confirm the route.

An EN designation packs three facts into one code. Take S355J2H:

• S = structural steel
• 355 = minimum yield strength in MPa
• J2 = impact subgrade (27 J at -20 degC)
• H = hollow section

That makes every number in the code something you can check on the test certificate, heat by heat.

S235 and S275: Where Do Lower Grades Make Sense?

S235JRH and S275J0H/J2H suit stiffness-governed work, where deflection or the member size limits the design more than strength does. Typical uses are secondary framing, purlin supports, handrails, canopies and light mezzanines. These grades are also easy to bend, cut and weld in an ordinary workshop. See S275 Structural Hollow Section and S275 Rectangular Hollow Section.

S355: Why Is It Our Most Ordered Grade?

S355 is the default for buildings, frames and general structural steelwork. It gives about 50% more yield strength than S235 with good weldability in J0, J2 and K2 subgrades. We supply it in every shape and route: cold formed, hot finished and seamless, and in black, painted or galvanized finish. Start from the S355 range, then branch to S355 Square, S355 Rectangular, S355 Seamless or Hot Dip Galvanized S355. The EN 10219 S355JR page covers the JR entry level.

S420 and S460: When Does High Strength Pay Off?

Choosing S420 or S460 lets the engineer cut wall thickness and tonnage on long spans, tall columns and heavily loaded nodes. We supply the thermomechanically rolled MH and normalized NH/NLH versions. Which one you need depends on the route and standard, covered in S420MH, S420NH, S460MH, S460NH and the existing EN 10210 S460NLH page. One honest note: where stiffness decides the design, higher grade adds cost and no benefit. We will tell you so when your numbers show it.

• ASTM A500 Grade B is the common US-standard choice, and Grade C gives higher strength for the same section. See ASTM A500 Gr. B Hollow Structural Section.
• ASTM A501 is the hot-formed option, with uniform properties around the corners.
• ASTM A1085 adds a tighter wall tolerance, a capped yield, and a required impact test. It suits projects that design to the full nominal wall.

For imperial designations and ordering HSS sizes, read Welded Hollow Structural Sections.

Yes. For Australia and New Zealand we supply C250, C350 and C450, with L0 impact options. For Japanese-specification work we supply STKR400 and STKR490 square and rectangular tubes. If the contract names a regional standard, we supply and certify to that standard. We do not substitute an EN or ASTM grade without your written approval.

Which Finish Goes With Which Grade?

Any grade can ship black, painted or hot-dip galvanized. For zinc-coated tubes we control the silicon content of the steel so coatings stay bright and even. See Black, Painted and Galvanized structural hollow sections.

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