NEWS-Zhishang Steel

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···

Specifying Colour on Prepainted Steel: RAL Numbers, Gloss, the Back Coat and the 15-Tonne Minimum2026-09-30

Colour is the one order line everyone reads and nobody specifies. What a RAL number does and does not commit the mill to, why the back coat is a separate produc···

Matching Steel Grades Across Standards: What Q235, SS400, A36 and S235JR Actually Promise2026-09-30

The number in a steel grade means different things in different systems: MPa yield, MPa tensile, ksi yield, or a JIS quality class with no number at all. How Q2···

Specifying Steel for Solar Mounting Structures: Posts, Rails, Clamps and the Coating Question2026-09-29

A mounting structure must behave like a structure and a coating product at once. The stack from posts to clamps, which product form each layer wants, pre-galvan···

Steel for Agricultural Buildings: Matching Roof, Frame and Fittings to the Farm Environment2026-09-29

Farm buildings combine daily moisture, dust and manure gases with a ignore-it maintenance budget. How to match galvalume and galvanized corrugated roofing, pain···