Shenzhen Juhao Hardware Technology Co., Ltd. |
Verified Suppliers
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Finish | black, ZINC, Plain, Black Oxide, ZINC PLATED, BLUE DYED,
Zinc-aluminum Coated, Blue Anodized, Yellow |
Material | Stainless steel, Steel |
Measurement system | INCH, Metric |
Head Style | Pan, Truss, Flat, Round, HEX, Cheese |
Place of Origin | China |
Model Number | Self drilling screw |
Standard | ISO,DIN,GB,ANSI |
Surface treatment | Customer's Requirement |
Certificate | ROHS ISOISO9001:2015 |
Package | Buyer's Requirement |
Advantage | One-stop Customized Service |
Quality | 100% QC Test |
Question 1 | 1.Why is stainless steel magnetic? |
304 stainless steel belongs to austenitic stainless steel,
austenite in the cold working process in part or a small amount of transformation into martensite, martensite is magnetic, so 304 stainless steel is non-magnetic or slightly magnetic. | |
Question 2 | 2. How to identify authentic 304 stainless steel products? |
①Support 304 stainless steel special test potion detection, if not
discoloured for the authentic 304 stainless steel | |
② support chemical composition analysis, spectral analysis | |
③ support salt spray test, simulate the actual use of the
environment | |
Question 3 | 3. What are the most commonly used stainless steel? |
① 201 stainless steel, suitable for use in dry environments, easy
to rust in water | |
② 304 stainless steel, outdoor or wet environment, corrosion
resistance and acid resistance | |
③ 316 stainless steel, plus molybdenum, more corrosion resistance
and pore erosion resistance, especially for seawater and chemical media |