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Special process and characteristic advantages:
1. Galvanized surface , high brightness, strong corrosion resistance.
2. Carburize tempering treatment, high surface hardness.
3. Advanced technology, high locking performance.
| Item | drywall screw |
| Material | SWCH22A, C1022A |
| Standard | DIN,ANSI,ISO,Non-standard...... |
| Head Type | Bugle head |
| Thickness | #8(4.2mm),#10(4.8mm)#12(5.5mm), #14(6.3mm) |
| Length | 1/2''~8''(13mm-200mm) |
| Package | Colour box+carton, Bulk in 25Kg bag, small bags+carton, Or customized by client request |


Poduct Application:
company costly advanced production equipment and exquisite technology from Germany, Japan and Taiwan. Production in strict accordance with international standards, for the production of high-value, high-quality products to lay a better foundation.
Shuangzi Metal Products Co., Ltd is a professional manufacturer of drilling screw and tappingscrew enterprises. Since its establishment, the company has been focusing on the production and R&D ofdrilling screw, which has built a modern, high standard, scale, variety of professional production line of drill tail screw. All used equipment are imported from Germany, Japan and Taiwan, with an annual output of high quality, multi-variety drill tail screw .The employed the top domestic technologist, in hexagon-shaping,clipping, thread-rolling,carburize,zinc plated,washer machine,package and other processes, every link strives for perfection and the best.

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