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Black spruce stand at Arctic Chalet, Inuvik, NT Spruce-pine-fir (SPF) is a classification of lumber that can be traded on commodities exchanges.. In Canada, and parts of the United States, most of the spruce tree species, pine tree species, and fir tree species share similar physical and mechanical characteristics, to the point where lumber derived from any of these species are interchangeable ...
Grades standardize the quality of lumber at different levels and are based on moisture content, size, and manufacture at the time of grading, shipping, and unloading by the buyer. The National Lumber Grades Authority (NLGA) [ 19 ] is responsible for writing, interpreting and maintaining Canadian lumber grading rules and standards.
Spruce is useful as a building wood, commonly referred to by several different names including North American timber, SPF (spruce, pine, fir) and whitewood (the collective name for spruce wood). [47] It is commonly used in Canadian Lumber Standard graded wood. [ 48 ]
Tembec manufactures a large amount of pulp & paper and SPF lumber in Ontario. The goods include hardwood flooring, newsprint, and a variety of pulp. Tembec employs over 7,000 people worldwide. Tembec reaches approximately $2.4 billion in sales per year. Trus Joint Kenora, a subsidiary of Weyerhaeuser, recently opened a TimberStrand mill in Kenora.
Plywood production requires a good log, called a peeler, which is generally straighter and larger in diameter than one required for processing into dimensioned lumber by a sawmill. The log is laid horizontally and rotated about its long axis while a long blade is pressed into it, causing a thin layer of wood to peel off (much as a continuous ...
As SPF levels increase beyond 50, the formulations tend to be thicker and leave a chalkier appearance, and most people will under compensate that white chalkiness by not utilizing the right amount ...
The Log Scaler measures the cut trees to determine the scale (volume) and quality (grade) of the wood to be used for manufacturing. When logs are sold, in order to determine the basis for a sale price in a standard way, the logs are "scaled" which means they are measured, identified as to species, and deductions for defects assigned to produce ...
Maybe it’s the time-saving thrill of combining two steps into one; maybe it’s feeling good that you actually remembered to apply sunscreen. Whatever the motivator, moisturizers spiked with SPF ...
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