Industry news-Zhishang Steel

Reading a Pipe Specification: Nominal Bore, Schedule and What the Wall Actually Is2026-10-09

Two buyers can order 2 inch pipe and both receive standard product with different bores and walls. What NPS and DN actually name, why one schedule number is man···

Specifying Steel for Factory Wall Cladding: Sheet, Sandwich Panel and the Frame Behind It2026-10-09

A factory wall has to keep weather out, carry wind back to the frame and accept every opening the process line needs. How to choose single-skin sheet or cored s···

Fastening Coated Steel: Screw Choice, Dissimilar Metals and the Galvanic Question2026-10-08

The fastener is the only component that penetrates a coated steel roof, and it introduces a second metal. Why the anode-to-cathode area ratio decides which part···

Setting Up Tooling for Coated Sheet: Bend Radius, Shear Clearance and Roll Forming2026-10-08

A coating a few tens of microns thick fails at a bend the base metal survives. How to read the T-bend figure, choose the forming grade, set roll gap and die ope···

Estimating Steel Quantity: What a Tonne Actually Buys in Plate, Coil, Section and Tube2026-10-08

Steel is bought by the tonne and used by the square metre or the metre. The conversion arithmetic for plate, coil, H-beams, tube and non-steel alloys, why gauge···

Verifying a Coated Steel Order: What Coating-Mass, Salt Spray and Bend Tests Actually Measure2026-10-08

A coating is a few microns of metal or film, so it cannot be judged by eye. What coating-mass, salt spray, T-bend and paint adhesion tests actually measure, wha···