Welding Samples Special Samples Refrigeration Compressor Low Voltage Electrical Home Applaince Hardware Harness Sample Auto Parts Butt Welding Carbon Steel Aluminum Stainless Steel Car wheel anti-skid iron chain projection welding sample Carbon steel spot projection welding sample Carbon steel spot welding sample Diesel engine oil port ring projection welding sample Electric bicycle bracket spot welding sample High-strength steel Al-Si coated patch plate spot welding sample Hollow tube ring projection welding samples for automotive parts M8 round nut + 1.5 hot-dip galvanized ring projection welding sample Fixed tire auto parts spot welding sample Exhaust pipe bolt projection welding sample Galvanized sheet M6 round nut ring projection welding sample Gas spring ring projection welding sample High-strength steel multi-spot welding samples High-strength steel nut plate projection welding sample High-strength steel nut projection welding sample Hollow sodium-filled valve ring projection welding sample