Knowledge

• 02/Sep2025

  316/316L Stainless Steel Electropolished Tube

  316L electropolished stainless steel tubing is tubing made from 316L stainless steel that has been electropolished. The electropolishing process chemically removes microscopic layers of metal, resulti

• 01/Sep2025

  What are the surface treatment processes for Q355NH?

  The surface treatment processes for Q355NH weathering steel focus on accelerating the formation of a protective rust layer (patina), enhancing aesthetics, or providing interim protection during fabric

• 01/Sep2025

  What is the processing performance of Q355NH weathering steel?

  The processing performance of Q355NH weathering steel is generally comparable to conventional structural steels like Q355B, but requires specific considerations due to its alloy content (Cu, Cr, P).

• 01/Sep2025

  Compared with Q235NH in the same series, does Q355NH have any obvious differe...

  Q355NH is not just stronger—it also offers superior, more reliable weather resistance, making it better suited for harsh or long-service-life outdoor projects, while Q235NH fits low-stress, mild-envir

• 01/Sep2025

  Compared with ordinary carbon steel Q355, what key alloying elements does Q35...

  Q355NH weathering steel contains additional alloying elements compared to ordinary carbon steel Q355 (such as Q355B), primarily to enable the formation of a protective rust layer (patina) that inhibit

• 01/Sep2025

  When using Q355NH outdoors, how long does it usually take to form a stable pr...

  The formation of a stable protective rust layer (patina) on Q355NH weathering steel typically takes 1.5 to 3 years under natural outdoor exposure, though this timeline can vary significantly based on

• 01/Sep2025

  What is the minimum standard for the yield strength of Q355NH when the thickn...

  According to the Chinese national standard GB/T 4171-2008, the minimum yield strength (ReH) for Q355NH weathering steel with a thickness of ≤16 mm is 355 MPa. This value is determined under standardiz

• 01/Sep2025

  What do 355 and NH in the name of Q355NH weathering steel represent respectiv...

  The "355" in Q355NH denotes its minimum yield strength of 355 MPa, while "NH" signifies its weathering-resistant properties, enabling it to form a protective rust layer that eliminates the need for pa

• 01/Sep2025

  SS 304 High Pressure Pipe Fittings

  SS 304 high-pressure pipe fittings are durable, corrosion-resistant components made from 304 stainless steel. They are used to connect fluid, gas, and oil pipelines in high-pressure, high-temperature

• 01/Sep2025

  Stainless Steel ERW Pipe Encyclopedia

  Stainless steel electric resistance welded pipe is a tubular product manufactured by forming stainless steel strip or coil into a tubular shape and then welding the longitudinal seams using an electri