索尼克精密五金工业（昆山)有限公司是中国一家生产“北塔”螺丝的生产制造厂商。其技术力量雄厚，严谨的质量管理系统，完善的售后服务，让广大客户放心使用。
“北塔”牌钻尾自钻螺丝和抽芯拉钉形成材质、规格齐全的两大系列，通过美国AQSR质量管理体系ISO9001：2000认证。产品至今已有三十余年的生产历史。其技术力量雄厚，“好而不贵”是北塔紧固系列的标志，完善的售后服务，及时的跟踪用户，深获国内外广大用户的支持和信赖。产品已达到国际先进水平，远销四十余个国家和地区。
北塔的PIAS钻尾不锈钢螺丝及SUPER PIASTA不锈钢耐蚀性复合金属钻尾螺丝为世界开创，全不锈钢钻尾螺丝，切削能力比用铣刀更优，特别是低转速重切削已达到世界高水平。“北塔”牌钻尾螺丝按材质形成低碳钢、304不锈钢、410不锈钢、550不锈钢。
不锈钢材质的北塔牌钻尾螺丝，其中550专利不锈钢材质，其高硬度，高强度，高耐腐蚀性，盐雾实验可达5000小时以上，是高科技创新产品。
低碳钢材质的北塔牌钻尾螺丝表面涂层有五彩锌、兰白锌及达克罗，耐腐蚀程度分别经得起48小时、1000小时-2000小时的盐雾试验。
北塔牌拉钉材质形成低镁合金、高镁合金、全铁、不锈钢系列，头形有半圆头和沙拉头。
北塔牌钻尾螺丝的头形有六角大华司、六角小华司、圆头、沙拉头、圆头华司、威华头、喇叭头、大扁平头(头部均可按客户要求烤漆，六角华司可制尼龙头)。
北塔品牌一贯坚持科学管理、技术创新、信守合同的质量方针，愿与国内外企业携手共图大业。且公司旗下尚有多种相关品牌产品，如：双帆、飞鱼、大荣、九如........
"Thenorth tower" brand drill tail self drilling screws and core-pulling rivetformed two big series, complete specifications, material through the U.S. AQSRquality management system ISO9001:2000 certification.The product has been more than 30 years of production history. The technical force is abundant, the "goodand inexpensive" is a sign of the north tower fastening series, perfectafter-sales service, timely tracking users, has been the support and trust of usersat home and abroad. Hasreached the international advanced level, products are sold to more than 40countries and regions.
Thenorth tower of the PIAS drlling screw stainless steel and SUPER PIASTAstainless steel corrosion resistance composite metal drlling screw as the worldfirst, all stainless steel drlling screw, cutting ability better than withmilling cutter, especially in the low speed heavy cutting has reached the worldhigh level."The northtower" brand drlling screw according to the material of low carbon steel,304 stainless steel, 410 stainless steel, 550 stainless steel.
Stainlessnorth tower card drlling screw, of which 550 patent stainless steel material,its high hardness, high strength, high corrosion resistance, salt fog test ofup to 5000 hours, is a high-tech innovative products.
Lowcarbon steel material of the surface of the north tower card drlling screwcoating color zinc, blue white zinc and dacromet, corrosion degree,respectively, stand up to 48 hours, 1000 hours to 2000 hours of salt spray test.
Thenorth tower card rivet material forming low magnesium and high magnesium, iron,stainless steel series, all form has a round head and a salad.
Thenorth tower card drlling screw head shape with hexagonal dahua division,hexagonal xiaohua, round head, salad head, round washer head, wei hua, hornhead, large flat head (head all can according to customer requirements of thelacquer that bake, hex washer, leading to system).
Thenorth tower brand has consistently adhered to scientific management,technological innovation, abide by the principle of the quality of thecontract, the figure of enterprises from home and abroad to work together.
