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Credibility ,Contrast is bolt due to bending moments, the inner tension and the lateral pressure, the pre-tightening force and bending moment under the joint action of the medial tensile stress is larger, the lateral smaller. After add internal pressure butt welding flange bolt stress distribution in whole with a preloaded consistent, but the stress increase. Flat welding flange on both ends of the stress increased obviously after heating, other position slightly increased.
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.