Coal Lumber

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Process of Manufacturing Lumber – Burton Lumber, Lovvorn Lumber

Lumber is the name used, generally in North America, for wood that has been cut into boards or other shapes for the purpose of woodworking or construction. Lumber or timber is wood in any of its stages from felling through readiness for use as structural material for construction, or wood pulp for paper production.

Lumber is supplied either rough or finished. Rough lumber is the raw material for furniture making and other items requiring additional cutting and shaping. It is available in many species and sizes. They can be of the low-est sizes or big ones. Finished lumber is supplied in standard sizes, mostly for the construction industry, and is primarily one of a few coniferous needle-bearing species such as pine, hemlock, fir or spruce.

Types of Lumber

Western Lumber: It is known for its ease of workmanship and nailing as well as strength and dimensional stability. It can be classified as High Quality Appearance, General Purpose Board or Radius-Edged Patio Decking Grade.

Redwood: Most redwood sold is heartwood and sapwood grade. Heartwood contains natural barriers to termites and decays and is suited for applications that come into contact with the ground. Sapwood contains cream-colored streaks. It should not be used in contact with the ground.

Southern Pine: It has high strength, resistance to wear and holds fasteners well. It is often used in homes and other structures. It has the highest quality and best appearance.

Treated Lumber: It resists weather, termites and fungus. Treatment involves chemical preservatives force deep into the cells in the wood under pressure.

Treated wood still absorbs water, and the treatment is not considered waterproof, but rather decay-proof.

There are many Lumber manufacturers like Burton Lumber Corporation, Lovvorn Lumber Corporation, Langmeier Lumber Inc., and many others. The process of manufacturing lumber in all these corporations is the same.

Steps for Lumber Manufacturing:

• The trees are felled and cut to a particular length and then they are transported to a loading location.

• Then logs are taken to the sawmill. A sawmill is a facility where logs are cut into boards.

• After logs are cut into various sizes, they are sorted by species, size and end use (lumber, plywood, chips).

• Then the logs go through a debarker to remove bark.

• The head rig, or primary saw, breaks the log down into sawn pieces. This can be the most critical part of manufacturing.

• Irregular edges and defects are trimmed off to create four-sided lumber. The trimmer squares off ends, usually at typical lumber lengths.

• Lumber is segregated by thickness and width. At the rough lumber stage, the product can take two different paths, depending on whether the final product will be produced as unseasoned (green) or dry. For dry products, the lumber is stacked with spacers (stickers) to allow air flow across all surfaces of the wood. Green products skip these steps and move directly to the planer. Most dry lumber is dried in kilns using steam. Some products are air-dried, with the moisture evaporating naturally. The planer puts a smooth surface on the lumber and makes it uniform in width and thickness.

• A grader assesses the characteristics on each piece and assigns an appropriate grade. Most lumber is graded according to final use: structural, appearance or factory (remanufactured into other products).

• Products of the same grade and size are packaged and shipped by truck, rail car, barge or ship to market.

Lumber is wood that is to be used for building, construction, paper, or other similar purposes. Lumber can refer to the wood at any point of the manufacturing process, including before it is processed, and after it has been formed into logs or boards. They are used widely and so their manufacturing knows no ends. Manufacturers like Burton Lumber Corporation, Lovvorn Lumber Corporation, Langmeier Lumber Inc, manufactures them in large numbers.

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