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| Categories | Self Tapping Screw | 
|---|---|
| Finish: | Black, ZINC, Black Oxide, ZINC PLATED, Yellow zinc | 
| Material: | Stainless steel, Steel | 
| Measurement system: | Metric | 
| Head Style: | Pan | 
| Place of Origin: | Guangdong, China | 
| Brand Name: | JUHAO | 
| Model Number: | Pan Head Self Tapping Screw | 
| Standard: | GB,DIN,ISO | 
| Surface treatment: | Plain.Black.Blue,yellow Zinc Plate. | 
| Certificate: | IATF16949:2016/ISO9001:2015 | 
| Delivery time: | 7-25 Days | 
| Advantage: | One-stop Customized Service | 
| Quality control: | 100% Inspection Berore Shipment | 
| Materia: | Carbon Steel Alloy Steel Stainless | 
| Packaging Details: | Inner PE Bag+Carton+Pallet | 
| Supply Ability: | 500000 Piece/Pieces per Month | 
| MOQ: | 1000 pieces | 
| Price: | $0.15/pieces 1000-9999 pieces | 
| Company Info. | 
| Shenzhen Juhao Hardware Technology Co., Ltd. | 
| Verified Supplier | 
| View Contact Details | 
| Product List | 
| Certificate | IATF16949:2016/ISO9001:2015 | 
| Color | Customized Colors | 
| Delivery time | 7-25 Days | 
| Package | PE Bag+Carton+Pallet | 
| QUALITY control | 100% Inspection Berore Shipment | 
| Advantage | OEM ODM Customized Service Provided | 
| Material | Carbon steel/Stainless steel | 
| Screws type | Pan head Self tapping Screws | 























| 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 | 


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