NEWS-Zhishang Steel

Scaffolding Tube Is Bought Once and Counted Every Year2026-11-09

A 48.3 x 3.2 tube weighs 3.56 kg a metre and a 2.75 mm wall saves 13 per cent of it and 12 per cent of the stiffness. What the wall thickness buys, where Q195 s···

A Hand Picks the Rail; a Load Picks the Post2026-11-09

The rail is chosen by hand and the post by a 1 kN push at 1.1 m, which is why a 60 x 60 x 2 post deflects half as much as a 50 x 50 x 2 for 21 per cent more ste···

Nitric Acid Is the One Acid That Punishes Molybdenum2026-11-09

A nitrogen complex runs four different liquids across one site. Why ammonia is a carbon steel job with a cold clause, why nitric acid rewards 304L over 316L, an···

In a Dyehouse the Salt Is the Corrosion Problem2026-11-09

A dyehouse puts 400 to 640 kg of salt into an 8,000 litre batch six times a day. Why the salt, not the dye, decides the stainless order, and how a machine is zo···

Air Separation Cold Boxes: Piping for a 216 K Drop2026-11-05

Inside an air separation cold box every line is stainless and none of it can be inspected after the box is closed. Why 304L, how a 216 K drop moves 90 mm of pip···

Surgical Instruments: The Order Is a Hardness Range, Not a Grade2026-11-05

A surgical instrument purchase order carries a grade, a condition and a hardness range, never the word surgical. Why 420 stops near 48 HRC, what 416HT, 17-4PH a···