1. inspection standards for stainless steel pressure vessels  the basis for the implementation of import and export pressure vessel inspection is the "commodity inspection law" and the "measures for the supervision and administration of import and export boilers and pressure vessels."the inspection

stainless steel: stainless steel refers to the general term for alloy steel with high chemical stability. it can resist the corrosion of corrosive media such as air, water, acids, alkalis, salts and their solutions. 2. the forms of corrosion of stainless steel are mainly uniform corrosion, pitting

hot rolled steelhot rolled steel is a steel that is heated and rolled at high temperatures. its strength is not very high, but it is sufficient for our use. its plasticity and weldability are better, so we are more commonly used. after the steel is strongly drawn beyond the strain hardening stage, i

when comparing stainless steel vs inconel, it is important to remember that there are different formulations for each. the variants of stainless steel have drastically different tensile strength, recommended operating temperature, and resistance to specific corrosives. for example, grade 316 stainle

the vital types of stainless steel flanges are the welding neck, long welding neck, slip-on, outlet weld, lap joint, threaded and also blind flanges. in enhancement to these standard flanges, some special ones exist, called weldoflange/nipoflange as well as elboflange, swivel flange, expander/reduce

1. pretreatment of pickling passivationbefore picking and passivation of stainless steel workpiece, if there is surface dirt, etc., it should be mechanically cleaned, and then degreasing and degreasing. if the pickling solution and passivation solution cannot remove grease, the presence of grease on

super stainless steel and nickel-based alloys are special stainless steel. first of all, they are different from ordinary stainless steel in chemical composition. they refer to a high alloy stainless steel containing high nickel, high chromium, and high molybdenum. among them, the more famous one i

componentsone. conventional elbow operation1. hold the tube bender forming handle or fix the tube bender to the vise.2. loosen the hook and raise the slider handle.3. place the pipe in the forming tray groove and fix it in the forming tray with a hook.4. lower the slider handle until the "0" scale l

new energy vehicles use more transmission lines. we can see the necessity of lightweighting new energy vehicles from the amount of nonferrous metal copper. the amount of copper used in each fuel-powered vehicle is about 25 kg, while the amount of copper used in plug-in hybrid vehicles is 40 kg to 50

petrobras (brazil) issued a communiqué on the 29th that the company's four offshore floating production storage and offloading units (fpso) recently set a new record of single-day oil production in the buzius oil field with a shareholding of chinese oil companies, reaching 66. 40,000 barrels.    fp