Plate Knowledge Daquan - very long knowledge of the information

Choosing a fireproof board depends on whether the color of the entire board is consistent with the texture, whether it is pigmented or not, whether there is any unevenness or blistering. High quality fire board thickness. . 3mm. . . 6mm. . . 8mm. 1mm and other specifications, the thickness is too thin, waterproof and fireproof effect is correspondingly poor, so the thickness is up to the standard and the thickness is consistent is the high quality fire board. How to buy a wood line is a wooden decorative line, is a mechanical analysis of various types of wood, processed, slender lines, high wood requirements, the need for "work-free" tree. The quality of the wood line is the key to the decorative effect. The following criteria are used to identify high-quality woodwork: (.) ​​No natural bending. The wooden line should be straight and deformed if naturally bent. (.) The thickness of the wood line is neat and uniform. The purchase of wood depends on whether the surface has any marks or rough surfaces, whether it has burrs, and the degree of polishing is high. These factors affect the visual effect. (.) Is the color consistent and the texture is uniform? (.) Whether or not there is a festival, but also to see if there is cracking, decay, insect eyes and other phenomena. (.) Whether the moisture content is up to standard. This requires scientific testing, and consumers can ask the merchant to present a product inspection certificate. What kinds of wood products are used to make furniture In addition to man-made boards, natural wood is also available. Natural wood is generally referred to as square wood and board. They are wood that is completely taken from nature and is simply divided and cut. Natural wood types There are many different areas and different environments. The texture, texture, and water absorption of different woods are also different. According to the characteristics of wood processing, we classify these woods into hardwoods and softwoods. () Hardwood: hardwoods are taken from broad-leaved trees and trunks are straight. It is short, hard and heavy, strong in texture, beautiful in texture, solid in texture, and durable. It is the main material for furniture frame structure and surface decoration. Commonly used are oak, ash, oak, oak, walnut, Birch, beech, eucalyptus, nanmu, boxwood, paulownia, rosewood, rosewood, mahogany, and colorwood. These types of wood are expensive and have a long shelf life. Among them, easy to process ash, paulownia , mahogany, oak, walnut, non-processed colored wood, rosewood, red sandalwood, easy to crack birch, beech, hard texture of colored wood, beech, red sandalwood, beech wood. (.) Softwood: softwood Taken from the needle Trees (ie evergreens), trunks straight and tall, smooth texture, uniform material, soft wood and easy processing, it is also known as soft wood. The surface to see the density and expansion and contraction deformation is small, strong corrosion resistance. Its soft texture, in the furniture generally can not be used as a frame structure of materials, but often used as non-structural parts of the auxiliary materials, or used to be processed into a variety of plates and artificial plates. Cork is generally not deformed without cracking. Commonly used cork There are: Korean pine, white pine, fir, spruce, willow, pine, cedar, Keteleeria, larch, ginkgo, teak, red sandalwood, etc., of which there are fir, red pine, ginkgo, willow, easy processing, White pine. Cork has different weathering resistance. Many species of trees also have brown, hard knots. Before doing furniture, the viscous liquid in the knots should be removed and the shellac be sealed. Loose knots are needed. After being glued with white, it is treated with shellac. There are several main indicators for identifying the quality of wood (.) Moisture content: Wood that has been plucked soon will be relatively moist, and products made from moist wood will shrink due to shrinkage. Cracking, warping, etc.; It is easy to produce decay and insects. Therefore, in the production process of furniture, the storage period is generally not too long. After the dry-processed wood, the moisture content is reduced to a minimum, and then used again. Because the moisture content has a great influence on furniture, Therefore, in the identification of wood quality must master the moisture content of wood. Such as splicing parts of the highest moisture content of wood: Northwest. %, 10% in the Northeast and North China, 15% in the Southwest, 18% in the East China, and 20% in the Central South. The moisture content of other components is 12% in the Northwest and 14% in the North China. 15%, 18% in Southwest China, 20% in East China, and 22% in Central and South China. Wood only dries to these standards, its shrinkage is small, and the resulting furniture will retain its shape and will not crack. Symptoms (.) Rickets: Various species of trees, due to their own growth patterns, can produce some natural rickets in the wood processing process. Common rickets have knots, cracks, warping, twisting around, etc. It is unavoidable that wood has a small amount of rickets, but it cannot have a lot of rickets. Wood: Hard and easy to machine, sawing, planing, chiseling, etc. are good factors for measuring high quality wood. In addition, wooden Fine structure, beautiful texture, neat, straight, no distortion of the twill, wood color and pleasing to the eye; moderate quality, but heavy, not too light; easy to glue, coloring, good painting is suitable for furniture made of good wood. How to Identify Natural and Artificial Boards Natural Veneers Made from Natural Decorative Materials Timber, while artificial veneer panels are derived from wood without clear textures and individual color textures and shades, and then processed by humans to form individual veneer panels with individual textures and shades. They can be distinguished by the following indicators: (.) ​​Can be decorated by The panel's color and texture distinguish it: Natural veneers determine the inconsistency of color and texture of a batch of materials (even each) due to their natural properties, and some still have unprocessable traces. The color of artificial veneers The textures and textures are artificially processed. Their grain patterns are uniform, uniform in color and uniform in shade, and texture maps are very regular. (.) Appearance distinguishes by edge treatment: The edge of the natural sheet is not smooth, more burrs, and synthetic sheet The edges are smooth and flat. The standard thickness of the natural sheet is 3mm, and the synthetic sheet can be from 3mm. 12mm range. What kind of splint splint, also known as plywood, is the cooking of wood logs, cut into large slices along the annual rings, dried, sorted, glued, formed, hot pressed, sawed, etc. Should be odd, when gluing, the fibers of the adjacent wood chips should be perpendicular to each other, and there are special grades such as first grade, second grade and third grade. Grades. The dimensions of the splint are 2440mm long and 1220mm wide. The splint thickness is different for different sizes, but generally it is all. The multiples. The thickness of the splint is divided into: plywood, plywood, plywood, twelve plywood, fifteen plywood, eighteen plywood. From the material points are: Liu Mu wood, poplar, ice candy, white clouds, sweet-scented osmanthus And so on, from the plywood glue synthesis number can be divided into: three-layer thick core board, multi-layer core board. How to buy high-quality plywood splints have positive and negative sides, when choosing, pay attention to the front smooth, smooth, rough, flat, uniform texture, uniform color, better bonding quality, no degumming, no space phenomenon, available a 50cm wooden stick Raise the plywood by gently tapping on the various parts. The sound is even and crisp as the upper splint. If the “shell” sound is dull, it may be due to degumming and hollowing. The thickness of the core board on each layer of the splint is uniform and the thickness reaches the standard. Splints should not have defects such as breakage, worms, rows of nail holes, dead knots, and burr groove marks. Some splints are made of two different lines of single-plate adhesive patchwork. When selecting, care should be taken to ensure that the splint joints are tight and there is no unevenness. In addition to the appearance, the good or bad can also weigh its weight. The heavier weight indicates that the material is tight, and most of the internal quality can only be seen clearly. You can also smell the scent way to test the splint is good or bad, do not smell the surface, to the plywood side of the glue, if there is a strong irritating odor, pungent pungent, that shows that the plate content of formaldehyde is too high, this splint must be not environmentally friendly , do not spend money to buy back to build "gas chamber". Plywood factory should have a quality inspection certificate of the manufacturer's quality inspection department, pay attention to plywood type, size, grade, bonding strength and moisture content, etc., may wish to ask the business. How to choose a high-quality Daxinban Daxinban has a special terminology called “Blockboard”, which consists of two layers of upper and lower splints, and a middle piece of wood material that is pressed and connected by a small piece of wood. Because of the gap in the core material, it can be heat-resistant. Expansion and shrinkage, to avoid deformation. Daxinban thickness is usually 18mm, with greater hardness and strength, flexible structure, strong plasticity, mainly used in furniture to make structural laminates. Is widely used, the role of the largest plate. The total thickness of the veneers on both sides of the board shall not be less than 3mm, and the core board may be of various tree species suitable for gluing, but the core board strips of the same board must be of the same tree species or physical properties approximate to each other. Soft materials and hard materials are not allowed. Mixed materials. The core strip must be dry, and its moisture content. %-12%. Daxin board must not be opened and blisters. The board must not retain inclusions that may affect its use. There must be no adhesive tape and obvious paper marks on the board. First, look at the appearance of the Daxin board. The thickness of the surface veneer layer must meet the requirements. This largely determines the strength of the dacron plate, whether the surface is smooth and smooth, and the smoothness of the veneer can also reflect whether the core plate is neat and even and whether it is deformed or not. Bending is a measure of the quality of large core board factors. The inner core board is neat and uniform, whether the tight assembly, glue quality is good, there is no bubbling, stratification, how the quality of the inner core board, the general need to saw before accurate Distinguish. smell smell, smell the side of the glue, if there is a strong irritating odor, indicating the environmental protection of the plate can not meet the requirements, the lower the formaldehyde content, the smaller the stimulating taste is better. Do not blindly believe what the business says, must see Quality certification certificate provided by the quality inspection department provided by the manufacturer, which specifies the type of blockboard and the physical performance index. The back of the blockboard is 30mm from the edge of the board should be marked with a clear and indelible marking. Content includes categories. ,Production Date, Manufacturer code and inspector code, if it is a sign of the paper, it does not meet the national standard. How to identify the quality of veneer panel: The first thing we should do to identify the veneer panel and the natural veneer, in front of We have already talked about the straight and regular texture of the artificial veneer, and the uniform color. The natural decorative veneer has a natural variability of the texture pattern and no rules. Second, the veneer has a good decorative appearance. The material should be fine and uniform, and the color should be clear. The pattern is beautiful, the texture of the matching board and parquet should be arranged according to certain rules, the wood color is similar, the patchwork is almost parallel to the edge of the board, the surface color must be the same, the surface has no scars, and the veneer quality of the decorative board is better than that of the base board. To achieve the national standard, whether for alkali treatment, etc. The thickness of the surface veneer should meet the standard, not too thin, too thin will be through the end, change, affect the appearance of the plastic layer structure is stable, no open plastic phenomenon. Veneer and the substrate must be connected Strictly tight seams, blistering, delamination, and degumming cannot occur between the veneer and the substrate and the internal layers of the substrate. The gluing strength can be tested with the knife rake method, using a sharp flat blade to open along the glue layer. The pectin layer is damaged, but the wood is intact, indicating that the glue strength is poor. The smell is smelling. If the irritating odor is strong, the excessive formaldehyde emission will seriously pollute the indoor environment, and the more dangerous it is indoors, we can ask the business. Test report to see if the product is in compliance with the environmental standards. To choose when purchasing the back panel, the lower right corner is marked with a decorative panel

Sheet furniture brand furniture decoration formaldehyde cypress wood furniture

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Carbon Steel Pipe Elbow is according to Angle will be have: 

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Products Name Carbon Steel Elbow,Carbon Steel Pipe Fitting,90 Degree Carbon Steel Elbow,Carbon Steel Pipe Elbow
Size Seamless (SMLS) fittings: 1/2"-24", DN15-DN600.
Welded fittings (seam) 26"-100", DN650-DN2500.
We also accept customized type
Thickness

SCH10,SCH20,SCH30, SCH STD, SCH40, SCH60, SCHXS, SCH80, SCH100, SCH120,

 SCH140, SCH160, SCH XXS.

Connection Type  Butt Welded 
HS CODE 7307930000
Standard ASME, ANSI B16.9;MSS SP-75 
JIS B2311/2312/2313
DIN2605
GB12459;GB/T13401
GOST 17375
we can also produce according to drawing and standards provided by customers.
Material ASTM A234WPB; ASTM A860 WPHY42, WPHY46,WPHY52,WPHY60,WPHY65,WPHY70
ST37.2, ST37.2, ST35.4,ST35.8,ST42,ST42.2,ST45.4,ST45.8,ST33, 20#,10#
GGP,STPY41,STPG38,STPG42
Surface Black painting, anti-rust oil, varnish or hot galvanized.
Applications Petroleum, chemical, machinery, boiler, electric power, shipbuilding, construction, etc
Main Market

Turkey, Italy, France, Spain, South Africa, Moroco, Dubai, Iran, Syria, Singapore, Vietnam, Austria, USA,

Canada, Mexico, Korea, Thailand, India, Bulgaria, Russia and so on

Certificate ISO9001-2008, 
Delivery time 30days after receipt of advanced payment or original LC ,Common size large quantity in stock  
Payment term T/T, L/C
Inspection Factory In-House Check or The Third Party Inspection
Packaging Plywood Pallets/ Wooden Case Or As Per customer's request
MOQ No Limit
Technics Hot Forming
Origin China
Sample

Sample can be free, but customer have to pay transport cost

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