News

August 14, 2026 — Tianjin, China — At a highway interchange project outside Houston, the rebar order reads like a mantra: ASTM A615 deformed steel rebar, Grade 60, No. 8 bars at 12-inch centers in the deck, No. 5 bars in the approach slabs. The specification never makes headlines. The specification shows up on every bar list, every shop drawing, and every concrete pour on the job.

The global construction industry is accelerating its shift toward HDG square tubes — hot-dip galvanized hollow structural sections that combine load-bearing performance with decades of corrosion resistance. From Southeast Asian high-rises to Middle Eastern infrastructure megaprojects, these rectangular steel profiles are increasingly specified as the default choice for construction steel frameworks.

But not all square tubes are equal. The grade you choose — Q235, ASTM A36, S235JR, or SS400 — directly determines structural safety, weldability, and long-term maintenance costs.

July 21, 2026 — Tianjin, China — SkySteel announces the expansion of the gas line ERW steel pipe product line, engineered to API 5L, ASTM A53, EN 10217, and GB/T 3091 standards. The gas line ERW steel pipe portfolio spans outside diameters from 21.3 mm to 610 mm, covering grades from API 5L Grade B through X70, with full Mill Test Report traceability on every shipment.

July 15, 2026 — Walk through any major agricultural trade show this year — AgroFarm in Moscow, Horti Asia in Bangkok, or the Canadian Greenhouse Conference — and you will notice the same thing. Booth after booth, the frame spec is identical: 50 millimeters by 50 millimeters, galvanized iron, square profile. The 50x50 GI square tube greenhouse has become the default answer, and it happened without much fanfare.

When selecting pre-painted steel coils for construction projects, procurement professionals often face a critical decision: DX51D PPGI coil or DX51D PPGL coil? Both products offer excellent surface finish and corrosion protection, yet DX51D PPGI coil and DX51D PPGL coil possess fundamentally different substrate compositions that determine performance and cost-effectiveness.

The steel H beam, with its "H"-shaped cross-section, combines high strength and excellent bending resistance, making the steel H beam a core structural material in construction and industry. Based on flange width, the steel H beam falls into three types: wide-flange (HW) for load-bearing columns, medium-flange (HM) for both beam and column performance, and narrow-flange (HN) specifically for beam applications. The zinc coating thickness for the steel H beam should be selected based on the service environment—thin coating for mild areas, thick heavy-duty coating for industrial or coastal zones to extend the steel H beam's service life.

When engineers and procurement specialists evaluate structural steel tubing for demanding projects, one grade consistently rises to the top: St52 pipe. But what makes St52 pipe such a versatile workhorse across multiple industries? More importantly, which engineering applications truly allow St52 pipe to showcase the full potential of St52 pipe? This article provides a comprehensive overview of the primary engineering fields where St52 pipe serves as the material of choice.

Steel angle bar acts as a core structural material across construction, infrastructure and machinery industries. Q235 steel angle bar and Q355 steel angle bar are two mainstream grades widely ordered by global contractors. Many buyers struggle to pick proper steel angle bar to match project load and service environment. This article sorts out unique strengths of Q235 steel angle bar and Q355 steel angle bar, and explains clear standards to select galvanized zinc layer thickness for steel angle bar, helping engineers and purchasers make cost-effective and safe decisions on steel angle bar procurement.

When manufacturing durable and rust-resistant iron wire hangers, selecting the right galvanized wire is a critical decision. The performance, longevity, and cost-effectiveness of finished hangers depend heavily on the type of zinc coating applied to the galvanized wire. This news article breaks down the advantages of different galvanized wire options and explains how to choose the optimal zinc layer thickness for hanger production.