Smooth plug, the needle holes for a comprehensive measure. Limit smooth ring divided through side and end stop; comprehensive measure for smooth cylindrical workpieces. Proofreading smooth ring positioned generally measured using a crossed school, is the inner length of the measurement basis; used to correct or repair the inside diameter measuring instruments and gauges. Proofreading smooth ring positioned generally measured using a crossed school, is the inner length of the measurement basis; used to correct or repair the inside diameter measuring instruments and gauges. Smooth ring into proofreading and ultimate glossy smooth ring gauge. Smooth ring into proofreading and ultimate glossy smooth ring gauge. Limit smooth ring divided through side and end stop; comprehensive measure for smooth cylindrical workpieces. The Company's leverage years of design and production experience, optimize the product mix, and strive to variety, quality Stable. Enterprise autonomy has improved detection capabilities, based on user requirements and design drainage, HVAC special structural aspects of various products. My company has a strong productivity and competitiveness of the industry, the factory has a threaded plug manufacturing department, manufacturing department threaded ring, smooth plug Manufacturing Manufacturing smooth ring, thread gauges manufacturing department. Our products are widely used in the oil, chemical, coal, power plants, research, shipbuilding, environmental protection, construction, machinery, metallurgy, fertilizer, paper, energy, biomedical, refrigeration, food, beverage, pharmaceutical, hospital, precision electronics, fine chemicals, electricity, painting surface cleaning and other areas and other industries. 

keywords: Threaded plug, threaded ring, smooth plug,