NEWS-Zhishang Steel

Chloride Stress Corrosion Cracking: The Failure That Starts Without Rust2026-10-20

Chloride stress corrosion cracking needs only temperature, tensile stress, oxygen and chlorides, and it cracks without rust. Why 304L, 316L and 317L stay expose···

Lean, Standard and Super Duplex: What Each Step Up the Ladder Buys2026-10-20

Duplex stainless comes in three rungs, and the jump from lean to standard to super is a jump in chemistry, price and temperature ceiling. What LDX 2101, 2205, 2···

Tube and Pipe Are Not the Same Word on an Order2026-10-19

Pipe and tube come off the same mill, but they are sold in two languages: nominal size with a schedule for pipe, outside diameter against wall in millimetres fo···

Heat Exchanger Tube: The Thermal Sum Behind the Alloy Choice2026-10-19

The tube wall is the smallest resistance in a heat exchanger, and a fouling film on either side usually costs more than the whole alloy wall. What each grade ac···

The Beam Is the Easy Part: Plates, Connections and Processing in a Steel Frame Order2026-10-19

A frame is quoted as a beam schedule and built from plates, bolts and welds. How to read a section by its five dimensions, why an IPE 450 is not a 450 mm H-sect···

Sizing the Wall: Working Pressure, Temperature and the Tolerance That Eats It2026-10-19

A schedule number describes a wall series, not a pressure rating. How hoop stress, allowable stress and design temperature actually set the wall, why P91 loses ···