NEWS-Zhishang Steel

Compressed Air, Nitrogen and Instrument Lines: The Piping Nobody Specifies2026-10-27

Compressed air is wet, and the pipe is where the water stops. Why A53 is approved for air lines, where carbon steel ends and what instrument air needs.

A Bridge Is Not a Building: Reading a Steel Order for a Structure That Moves2026-10-27

A bridge sees a hundred million load cycles before a repaint. Why the stress range picks the detail before the grade, and how plate width fixes the splice.

How Much a Line Grows: Expansion, Loops and the Anchor That Pays for It2026-10-26

Thirty metres of 304 grows 51.6 mm between 20 and 120 C. What that does to the layout, why a restrained duplex line moves the load into the anchor, how loops an···

What 'Hygienic' Changes in a Stainless Order: Finish, Joint and Grade2026-10-26

A hygienic stainless order is decided by surface and joint before it is decided by grade. What 2B, BA and No.4 actually are, where 316L runs out and duplex or 3···

Shipyard and Offshore Orders: The Plate and Section Package Behind the Marine Label2026-10-26

A marine order is a plate, section and coated sheet package before it is a corrosion problem. The plate and H-beam economics behind hull blocks and topsides, th···

Petrochemical Service: Choosing Steel for the Stream Instead of the Grade2026-10-26

A petrochemical order follows the stream, not the stencil. Where A106, A53 and API 5L still carry the volume, where P22 and P91 take over, how stabilised 321, 3···