As various crystal lamps enter more and more people's homes in Zhengzhou, the price of crystal lamps on Zhengzhou City is quite large, and many consumers only pay attention to its models and do not understand its materials. How to choose the crystal lamp? How can I get the value for money? Recently, I visited Zeng Zhaoquan, the general manager of Zhenpeng Lighting. He enthusiastically introduced the characteristics and purchase of the crystal lamp for the author and the customers who bought the crystal lamp in the store. I want to teach you how to buy high-quality crystal lamps and avoid buying high-priced bargains.
Zeng Zhaoquan said that consumers have to figure out the history and concept of crystal lamps before buying, and the crystal lamps give people a noble and dreamy feeling. The first crystal lamp was made up of metal brackets, candles, natural crystals or quartz pendants. Later, because the cost of natural crystals was too high, it was replaced by artificial crystals, and then the incandescent lamps gradually replaced the candle light sources.
Most of the crystal lamps sold on the market are made of incandescent lamps shaped like candlelight flames. Since each crystal lamp has multiple bulbs, the power consumption is relatively high, and it is possible to replace the flame with energy-saving lamps. Shaped bulbs? The idea is very creative, but the use of energy-saving lamps will affect the overall visual effect of the crystal lamp, because only the light of the transparent incandescent lamp without color will reflect the colorful effect when it shines on the crystal. Zeng Zhaoquan said that since natural crystals often contain natural flaws such as horizontal stripes and flocs, and the resources are limited, the crystal lamps currently on the market are made of crystal, that is, artificial crystals.
The best crystal is no bubbles, cracks, impurities
Although they are all artificial crystals, the grades and quality of different artificial crystals are also very different; since the value of crystal lamps is largely determined by crystal, it is necessary to pay attention to the quality of crystal. Zeng Zhaoquan said that crystal is actually a kind of glass. When the proportion of lead oxide containing glass is more than 24% and the degree of refraction is 1.545, it can be called crystal. However, most of the crystal lamps sold in the Zhengzhou market now use all-lead crystals. The content of lead oxide is more than 30% to ensure the transparency of the crystal. From the cut surface, the regular, smooth, smooth and angular cut surface is the crystal refraction effect. In addition, the best crystals are free of bubbles, cracks and impurities. For example, comparing a pendant of a domestic crystal lamp with a pendant of an imported crystal lamp, you will find that the transparency of the imported crystal is significantly higher than that of the domestic crystal. The cut surface of the imported crystal is flat, not rough, smooth, and has almost no impurities. The domestic crystal will occasionally see bubbles or impurities.
Therefore, consumers can start from these aspects when purchasing, observe the transparency of the crystal or view the data on the lead content and the angular part of the surface and the cut surface of the cut surface; check for impurities such as bubbles.
Finally, Zeng Zhaoquan believes that in addition to crystal, crystal lamp brackets are also more important. At present, the styles of crystal lamps on the Zhengzhou market are mostly composed of gold-plated metal brackets, PVC brackets, acrylic brackets and glass brackets with crystal pendants. Although the PVC brackets make the crystal lamps look more dazzling, they may not be strong enough or easily damaged. . Acrylic stents are prone to discoloration and yellowing over a long period of time. Chrome-plated metal brackets are susceptible to oxidative discoloration. In comparison, the strength of the gold-plated metal bracket is enough to carry all the crystal pendants, and the gloss is also more beautiful. Consumers can choose the crystal lamp of 24K gold-plated metal bracket as much as possible, which not only guarantees the overall dazzling luster of the crystal lamp, after a period of time. After use, it can still maintain the effect of no discoloration and no fading.
I System description:
Heat Shrinkable Tape is designed to protect the weld joint of buried or exposed steel pipelines and insulated pipeline. This sleeves are manufactured from high quality cross linked polyethylene material. Hot melt adhesive provides excellent adhesion with the surface of steel pipeline, PE coating. Meanwhile it forms a continuous and firm anti-corrosive system with the surface of the pipeline.
The Polyethylene Heat shrinkable Tape needs no primer nor patch closure and reduces application time and labour costs.
â…¡ Structure
The specification of the tape consists of three layers,
Adhesive: butyl rubber based hot melt adhesive
Film backing: Radiation crosslinked polyethylene
Interleaf:Antiadhesive Film Treated with Silicone
â…¢ Features
After heating, formed corrosion protection seal
Strong backing provides outstanding waterproofing effect
High chemical resistance. resists impact, abrasion and ultraviolet light.
Excellent resistance against cathodic disbondment, dielectric breakdown.
Simple Application
â…£ Physical Properties
· Product Data Sheet Total Thickness:40mil, 50 mil,60 mil ,65 mils.
· Width:50,100,150,300,400,500,800 mm
· Length: 10 m
· Tensile Strength:35 N/cm
· Elongation:400%
· Adhesion Strength to pipe:30 N/cm
· Application temperature: -10 -60 ℃
· Temperature resistance:-50 ℃ - 80℃
· Shelf Life: 12 months
â…¤ Application
No Special skills, equipments, patch closure nor primer are needed. Its superior flexibility provides easy and reliable application for irregular configurations of fittings, bends and elbows and small diameter of straight pipes
Wrap spirally the tape over foreign matters-free and preheated surface, beginning at least 25~50mm (1~2 ) onto pipe coating. Wrap the tape with enough tension to obtain conformability and with minimum 50% of overlapping, while removing the release liner. Warm the end part of the tape and press down firmly. Using a torch, start at the edge of the tape and heat circumferentially around the coated pipe.
Finish off by heating over the entire tape vertically to ensure a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.
VI. Technical Datas
Heat Shrinkable Tape
Heat Shrinkable Tape, Shrink Wrap Tape, Heat Applied Tape
Jining Xunda Pipe Coating Materials Co.,Ltd , http://www.pipe-wrap.com