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Gypsum board is the generic name for a family of panel-type products consisting of a noncombustible core, primarily of gypsum, with a paper surfacing on the face, back, and long edges.
Gypsum board is often called drywall, wallboard, or plasterboard and differs from products such as plywood, hardboard, and fiberboard, because of its noncombustible core. It is designed to provide a monolithic surface when joints and fastener heads are covered with a joint treatment system.
Gypsum is a mineral found in sedimentary rock formations in a crystalline form known as calcium sulfate dehydrate. One hundred pounds of gypsum rock contains approximately 21 pounds (or 10 quarts) of chemically combined water. Gypsum rock is mined or quarried and then crushed. The crushed rock is then ground into a fine powder and heated to about 350 degreesF, driving off three fourths of the chemically combined water in a process called calcining. The calcined gypsum (or hemihydrate) is then used as the base for gypsum plaster, gypsum board and other gypsum products.
To produce gypsum board, the calcined gypsum is mixed with water and additives to form a slurry which is fed between continuous layers of paper on a board machine. As the board moves down a conveyer line, the calcium sulfate recrystallizes or rehydrates, reverting to its original rock state. The paper becomes chemically and mechanically bonded to the core. The board is then cut to length and conveyed through dryers to remove any free moisture.
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| Posted by |
CHERRY
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| e-Mail | Contact company |
Company
| Beijing SINO-ASIA Construction Material Co
| | Address | fengtai district | City & ZIP
| 100068
| Country
| China 
| Phone
| For registered Members only.
| Fax
| For registered Members only.
| | Key Customers / Clientele | | | Company Profile | Beijing SINO-ASIA Construction Material Co.,LTD., is fast growing up international producer and supplyer of building materials. Since 2005 company establish several factories in China for producing hight quality materials that have world quality level.
SINO-ASIA introduce you following materials:
1) Gypsum Board Regular
2) Gypsum Board Fireproof
3) Gypsum Board Waterproof
4) MGO Board (Glass Magnesium Board) Grade A (density 1000 kg/sqm)
5) MGO Board (Glass Magnesium Board) Grade B (density 800 kg/sqm)
6) Profiles for gypsum board installation
7) Mineral fiber ceiling tiles (analogue of ARMSTRONG tiles)
8) Textured PVC film laminated Gypsum Ceiling Tiles.
9) Profiles and T-bars for ceiling tiles installation
10) Gypsum board production lines.
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 | | Keywords (seperated by comma) | gypsum board | | Product Specifications | Gypsum board is the generic name for a family of panel-type products consisting of a noncombustible core, primarily of gypsum, with a paper surfacing on the face, back, and long edges.
Gypsum board is often called drywall, wallboard, or plasterboard and differs from products such as plywood, hardboard, and fiberboard, because of its noncombustible core. It is designed to provide a monolithic surface when joints and fastener heads are covered with a joint treatment system.
Gypsum is a mineral found in sedimentary rock formations in a crystalline form known as calcium sulfate dehydrate. One hundred pounds of gypsum rock contains approximately 21 pounds (or 10 quarts) of chemically combined water. Gypsum rock is mined or quarried and then crushed. The crushed rock is then ground into a fine powder and heated to about 350 degreesF, driving off three fourths of the chemically combined water in a process called calcining. The calcined gypsum (or hemihydrate) is then used as the base for gypsum plaster, gypsum board and other gypsum products.
To produce gypsum board, the calcined gypsum is mixed with water and additives to form a slurry which is fed between continuous layers of paper on a board machine. As the board moves down a conveyer line, the calcium sulfate recrystallizes or rehydrates, reverting to its original rock state. The paper becomes chemically and mechanically bonded to the core. The board is then cut to length and conveyed through dryers to remove any free moisture.
| | Industry Category | building material | | Quality/Safety Certifications | | | Delivery Lead Time | all the time | | Payment & Price Terms | by T/T | | My Offers | as youerequest | | Product Portfolio / Other Products | | | Customers | all over the world | | Detailed Company Introduction | | | FOB Price & Port | 2005 | | Packaging Details | 508 | | Our Team | 50000 | | Web Site | For registered Members only. |
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| Product Details |
| Product id |
300157 |
| Visits |
52 |
| Date |
2011.05.26 |
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