Water conservancy and hydropower: quality inspection and assessment standards for steel structure bolting connections in port equipment installation engineering
Water conservancy and hydropower: quality inspection and assessment standards for steel structure bolting connections in port equipment installation engineering
1. The form, specifications and technical parameters of the high-strength bolts used for steel structure connection must meet the design requirements and relevant standards. The torque coefficient must be re-examined before use.
2. When connecting with high-strength bolts, the friction coefficient of the joint faces of the components must meet the design requirements.
3. When the steel structure is connected by high-strength bolts, the high-strength bolts must be tightened twice. The initial and final screwing quality must meet the design requirements and specifications.
Stainless Steel Pipe is a kind of hollow long round steel, which is widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial pipelines and mechanical structural parts. In addition, when the bending and torsion strength are the same, the weight is lighter, so it is also widely used in manufacturing mechanical parts and engineering structures. It is also used for furniture, kitchenware, etc. The hardness of stainless steel pipe is usually measured by Brinell, Rockwell and Vickers. Annealed stainless steel pipe with inner diameter of more than 6.0 mm and wall thickness of less than 13 mm. Production process of stainless steel seamless pipe A. round steel preparation; b. Heating; c. Hot rolling perforation; d. Cutting head; e. Pickling; f. Grinding; g. Lubrication; h. Cold rolling; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection. Common materials are 201, 304 and 316.ETC
304 Stainless Steel Pipe,310S Stainless Steel Pipe,Seamless Stainless Steel Pipe,316 Round Stainless Steel Tube
Shandong Xinsuju Steel Co.,Ltd. , https://www.sawlpipe.com