normalizing: heat the steel to above the AC3 or ACCM 30-50 ° C, holding for some time, put out from the furnace , and cool in air or by water, spray,wind. The Intent of this Technology is to make the grain in steel refine and carbide distribute unifo

ultrasonic testing / UT The standard of UT Standard level BS5996:1993(British) BS4 BS3 BS2 SEL072-79(Germany) II III IV JISG0801-1993(Japan) qualified &nbs

Galvanization 1. Technique :Allumen rare earth as well as zinc nickel alloy hot dipping zinc level 2. equipment: large galvanizing pot 13x1.5x2.3 meters middle galvanizing pot 6.5x0.8x1.2 meters small galvanizing pot 1.8x0.6x0.8 me

Pre-treatment for Shipbuilding steel (ball blasting, derusting,painting) Surface pretreatment line technical parameters on steel plates and profile steel items name unit Type1 Type2 Type3 1 workpiece width mm 250

Cutting of numerical control technical. NC Cutting technical standard 一：Verticality of the standard in NC Cutting Thickness of steel plate（mm） Vertical（mm） ＜100 100-150 150-200 200-250 250-300 300-400