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Resources
Engineering and import guides
Practical references for buyers and engineers sourcing stamped parts, springs and sheet metal from China: cost, tolerances, materials and import classification.
Engineering guide
How stamping tooling cost and MOQ work
How stamping die cost is amortized over annual volume, when stamping beats laser cutting, and what to send for an accurate tooling quote.
Engineering guide
JIS B 0408 general tolerances for pressed metal parts
JIS B 0408 general dimensional tolerances for blanked and bent/drawn metal press parts, grades A, B and C, and how to call them out on drawings.
Materials
JIS, ASTM and GB material equivalents
Equivalent grades for SPCC, SGCC, SUS304, A5052 and C7701 across JIS, ASTM/UNS, EN and Chinese GB standards, for stamping and sheet metal.
Import guide
HS codes for sheet metal enclosures and stamped parts
How sheet metal enclosures and stamped parts are commonly classified (7326, 7616, 8538, 8473, 9403) and why it matters for duty and EU CBAM.