What are the key quality control points for Q195 nails?
① Wire diameter tolerance ±0.05mm;
② Nail head secure, no cracks;
③ Sharp tip, no folds;
④ Rust-free surface, uniform plating;
⑤ Nail driving test: bends without cracking, penetrates smoothly into wood.
How to test the toughness of Q195 nails?
180° bending test: nail shank bends 180° without cracking; or drop hammer impact: tip does not chip, shank does not crack.
What are the salt spray requirements for Q195 galvanized nails?
Ordinary galvanizing ≥48 hours without white rust; electro-galvanizing ≥72 hours; hot-dip galvanizing ≥200 hours, meeting outdoor use requirements.
What are the tensile/pull-out strength standards for Q195 nails?
Taking a 3mm diameter as an example: tensile strength ≥700N; pull-out strength into hardwood ≥300N, meeting general construction/furniture fixing requirements.
Q195 is suitable for making various types of nails.
General low-strength nails, including common round nails, woodworking nails, galvanized nails, polished nails, staples, U-shaped nails, furniture nails, and packaging nails.