Custom Steel Fabrication from China: High-Quality Suppliers for Factory-Direct Automotive and Machinery Parts
Hot rolled plate (Q235B)
yield strength ≥235MPa | carbon content 0.12-0.20% | surface oxide scale
low cost | excellent plasticity | easy to weld | ASTM A36 class
custom laser-cut Q235B hot-rolled steel building frames, welded Q235B hot-rolled steel construction machinery parts, bending-formed Q235B hot-rolled steel container shells
laser-cut and welded Q235B hot-rolled steel container corner parts
laser cutting → bending and forming → arc welding
bending R Angle ≥2t (plate thickness) to prevent cracking
impact load 50 tons, through CSC certification
Cold rolled sheets (SPCC)
high dimensional accuracy ±0.1mm | smooth surface | suitable for electroplating
custom laser-cut SPCC cold-rolled steel electrical appliance shells, CNC-bent SPCC cold-rolled steel precision structural parts, electro-galvanized SPCC cold-rolled steel automotive interior parts
laser-cut and CNC-bent SPCC cold-rolled steel distribution box housings
laser cutting → CNC bending → electro-galvanizing
bending rebound Angle <0.5° needs to be compensated
No corrosion for 96h salt spray, in line with IEC 61439 standard
Hot-dip galvanized sheet (SGCC)
Zinc layer weight 60-180g/㎡ | Hardness of alloy layer HV250 | Self-repair
No spray anticorrosion | Outdoor life 20 years + | JIS G3302 standard
die-stamped SGCC hot-dip galvanized steel roof panels, riveted SGCC hot-dip galvanized steel ventilation ducts, custom SGCC hot-dip galvanized steel outdoor cabinets
die-stamped and riveted SGCC hot-dip galvanized steel 5G base station waterproof boxes
die punching → riveting and assembly → local zinc patching
Avoid welding (zinc layer porosity)
IP67 protection class, salt spray 1000h standard
Low alloy steel (Q355)
yield strength ≥355MPa | low temperature impact energy ≥34J (-20℃) | microalloying of molybdenum and vanadium
Weight loss of 20% vs Q235 | Welding without preheating | EN 10025 S355 class
laser-cut Q355 low alloy steel crane booms, welded Q355 low alloy steel wind power towers, custom Q355 low alloy steel new energy vehicle frames
laser-cut and welded Q355 low alloy steel logistics forklift masts
laser cutting → robot welding → vibration aging
thermal input ≤25kJ/cm anti-embrittlement
Fatigue life > 1 million cycles
Tool steel (45#)
carbon content 0.45% | hardened hardness HRC 50-55 | wear resistance coefficient 0.8
high cost-effective mold steel | excellent cutting performance | GB/T 699 standard
laser-cut 45# tool steel stamping dies, quenched 45# tool steel cutting tools, precision-ground 45# tool steel fixtures
laser-cut and quenched 45# tool steel sheet metal punching dies
laser cutting → vacuum quenching → precision grinding
reserve 0.2% quenching deformation allowance
Blade life 100,000 punches (SPCC 1.5mm)
High strength steel (HSS)
tensile strength ≥700MPa | yield strength ratio 0.85-0.95 | rebound Angle <3°
30% thinner while maintain strength | Excellent impact energy absorption | Light weight first choice
fiber laser-cut HSS high-strength steel automotive anti-collision beams, hot-formed HSS high-strength steel safes, riveted HSS high-strength steel military product boxes
fiber laser-cut and hot-formed HSS high-strength steel electric vehicle battery trays
fiber laser cutting → thermoforming → SPR riveting
it needs a press above 1000T to form
40% weight loss, passed ECE R94 crash test
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