The moisture content of the wooden keel must be controlled below 12%, and the "keel" must be firm and it cannot be loosened, so that cracks in the gypsum board ceiling can be prevented. Adhesive plaster line to make gypsum board with the top surface, the wall left about 0.5 cm gap, with gypsum powder and latex to adjust the gap, to prevent the plaster line cracking.
Aisle ceiling living room ceiling
LSAW pipe mill, also known as JCOE steel pipe, it has one welding seam and uses the submerged arc welding process. The specification range is from 325mm to 1420mm. When the diameter of the straight seam submerged arc welding pipe is greater than 914.4 mm, the standard stipulates that steel pipes is allowed to have two straight welding seams.
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