Self-tapping Screws have a wide range of tip and thread patterns, and are available with almost any possible screw head design. Common features are the screw thread covering the whole length of the screw from tip to head and a pronounced thread hard enough for the intended substrate, often case-hardened. stainless steel self tapping screws, pan head self tapping screws, flat head self tapping screws FinExpress Precision Manufacturing(Dongguan) Co., Ltd , https://www.finexpresshardware.com
For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-tapping one can (within reasonable limits of substrate hardness and depth).
For softer substrates such as wood or soft plastics, the self-tapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action.
Not all self-tapping screws have a sharp tip. The type B tip is blunt and intended for use with a pilot hole, often in sheet materials. The lack of a sharp tip is helpful for packaging and handling and in some applications may be helpful for reducing the clearance necessary on the reverse of a fastened panel or for making more thread available on a given length screw.
Looking back at the major economic events in 2014, the collapse of the Russian ruble in emerging markets has always been a topic that cannot be bypassed. Although the ruble continued to rebound against the US dollar at the end of 2014, and Russian authorities also optimistically announced on December 25, 2014 that the Ruble crisis had ended, analysts remained on the sidelines and gave predictions of bitter days. In fact, the devaluation of the ruble has had a major impact on the export of China's footwear products. For enterprises in Wenzhou, Sichuan, Quanzhou and other places that use Russia as an important export market, the hard-won "winter" has become their truest feeling.
Ruble devaluation exports shoe companies encounter "cold"
Wenzhou shoes have long been a bright "business card" for Zhejiang trade with Russia. According to statistics, Russia is the third largest export market after Wenzhou footwear exports, after the EU and the United States. It can be described as “deep waterâ€. However, the rubbing of the ruble by the "Lu" has caused the trade feelings of both parties to suffer a serious "test."
A salesman of Lulushun Footwear Co., Ltd. in Zhejiang said in an interview with reporters that the devaluation of the ruble caused the company’s trade with Russia to be affected, and that order decline was inevitable. At present, the company's market sales department is also constantly adjusting the layout of the export market and doing its utmost to reduce the risks and uncertainties in market sales. When the reporter mentioned that the devaluation of the ruble caused the volume of export orders to decline, the salesperson did not disclose the specific figures.
Likewise, Quanzhou shoes, which used Russia as an important export market, also suffered from the “cold†crisis in the ruble crisis. It is reported that the six shoe companies of Quanzhou in the Southern Fujian Chamber of Commerce have no longer operated the Russian market. The reason is that the market has deteriorated.
Coincidentally, Russia is also a traditional big market for the export of Sichuan shoes. Since the 1990s, Sichuan shoes have been sold to Russia. According to the data, each pair of 3 pairs of shoes exported to Sichuan has one pair sold to Russia. A Chengdu-based trader who made shoe export trade revealed with reporters that because of the devaluation of the ruble, all shoe companies in Chengdu that did a single export to Russia entered the “winter†period.
Cross-border e-commerce is also difficult to "do it alone"
It is understood that at present, China’s cross-border e-commerce enterprises mainly export six kinds of goods to Russia, including clothing, electronic products, shoes, bags, auto parts, and jewelry. The sellers are mainly concentrated in Jiangsu and Zhejiang and Shenzhen.
With the devaluation of the ruble and the absence of changes in commodity prices, the exchange of rubles converted by the same income will decrease, causing direct economic losses. According to a businessman from Russia and China, the low price of goods sold on the Chinese cross-border e-commerce website is an important reason for attracting Russian consumers.
When the ruble depreciates sharply, even if the dollar price on the Chinese cross-border e-commerce website remains unchanged, Russians will have to sell more rubles to buy the same goods. At this time, the prices of cross-border e-commerce websites are no longer advantageous compared to Russian local stores and e-commerce websites. Russian consumers who are very sensitive to prices should buy them by “choose the right onesâ€.
Some of the shoe dealers operating cross-border e-commerce in Russia said that the basic price of shoes on the website is used as rubles. The devaluation of the ruble has a very large impact on them. If they do not increase prices with the depreciation of the ruble, then their goods are sold. The more you lose, the greater the loss.
The data shows that the cold trade environment in recent years has caused a significant change in orders for export companies. A footwear industry veteran with more than a decade of experience in importing and exporting said that there are fewer large orders and more small orders, and fragmentation of orders is becoming a new format. "The long single contraction into short singles and large singles into small singles is also a test for those who are used to making long-term orders and large single businesses."
According to a trade shoe trader in Russia, there is a serious shortage of demand in the shoe market in Russia, and orders have been drastically reduced. Products such as “one-piece†and “custom†products that meet individual needs are a good “expedient measureâ€.
What's remarkable is that the "one-piece flow" production method originally created by Dongguan Lianyi Clothing may be very useful for reference. According to the person in charge of the garment industry of Lianye, the so-called single-stream production means that it takes only half an hour to complete the production of a product. "We shortened the production cycle and realized various small orders. Theoretically, an order can also be picked up."