Original Title: Executive Standards and Inspection Requirements for Titanium Alloy Pipes Commonly Used in China Executive Standards and Inspection Requirements for Titanium Alloy Pipes Commonly Used in China At present, with the increasing demand for titanium and titanium alloy pipe fittings in petroleum, chemical, textile and other industries, the use of seamed titanium pipe fittings in titanium pipe manufacturers has been equivalent to the use of seamless pipe fittings, but there is no applicable national standard for titanium and titanium alloy seamless and welded pipe fittings in China, so it is urgent to establish a national standard to regulate the quality of titanium and titanium-alloy seamless and welded pipe fittings. The standard is formulated with reference to the above standards and on the basis of years of use and production experience. 1. The scope of application of titanium alloy pipe fittings is specified, and the size from DN15 to DN1200 is consistent with ASME B16.9: 2007 Forged Steel Butt Welded Pipes III Manufactured in Factory; 2. The relevant symbols of titanium alloy pipe fittings are specified and consistent with the current standard symbols of steel pipe fittings; 3. Stipulate the classification,nickel titanium wire, common materials, dimensions and tolerances, manufacturing,ti6al4v eli, surface quality and nondestructive testing of titanium alloy pipe fittings; the classification and code of titanium alloy pipe fittings ASME and the national standard of steel pipe fittings are basically the same, but the limited difference is that the code of seamed pipe fittings is to add the letter "W" before the code of seamless pipe fittings, which is not used in the national standard of steel pipe fittings, but there is such a statement in ASME SB-363; the marking example is consistent with the national standard for steel pipe fittings ; Basis HG/T 3651-1999 "Titanium Butt Welding Seamless Fittings" and the new titanium standard have specified the common titanium grades and related standards, and the dimensions and tolerances of titanium alloy fittings are the basis ASME SB-363 "Seamless and Welded Unalloyed Titanium and Titanium Alloy Welded Fittings" and ASME B16.9: 2007 "Factory-Manufactured Forged Steel Butt Welding Fittings"; individual dimensions are slightly different from the national standard for steel fittings For example, for DN20 pipe fittings, Titanium welding pipe ,titanium sheet grade 5, the "outer diameter at the groove" is "26.9mm" in GB/T 12459 and "26.7mm" in this standard. According to HG/T 3651-1999 Titanium Butt-welding Seamless Fittings, GB/T 12459 Steel Butt-welding Seamless Fittings, GB/T 13401 Steel Plate Butt-welding Fittings ASME SB-363, Seamless and Welded Unalloyed Titanium and Titanium Alloy Welded Pipe Fittings, and the experience gained from its manufacture and use, specifies the requirements for the manufacture, surface quality, and nondestructive testing of titanium alloy pipe fittings. 4. Design verification test (including procedures, methods, result availability, coverage and requirements) for titanium alloy pipe fittings in accordance with GB/T 12459 Steel Butt Welding Seamless Fittings, GB/T 13401 Steel Plate Butt Welding Fittings and ASME B16.9: 2007 Factory-Manufactured Forged Steel Butt Welding Fittings. The product test and test method are specified; 5. Stipulate the inspection and acceptance, batch assembly, inspection items and judgment of inspection results of titanium alloy pipe fittings; 6. Stipulate the requirements for marking, packaging, transportation and storage of titanium alloy pipe fittings; 7. Specify the contents to be included in the contract or purchase order when ordering titanium alloy pipe fittings. One of the advantages of alloy pipe fittings is that they can be 100% recycled, which is in line with the national strategy of environmental protection, energy saving and resource saving, and the national policy encourages the expansion of the application field of alloy pipe fittings. At present, the consumption of alloy pipe fittings in China accounts for only half of the total steel consumption in developed countries, and the expansion of the use of alloy pipe fittings provides a broader space for the development of the industry. In the future,Titanium 6Al4V wire, the demand for long alloy pipe fittings in China will increase by 10-12% annually. The development of alloy pipe fittings in China started late, and the industry concentration is relatively high. The concentration of the top four alloy pipe fittings in the long product industry is about 51%, which is conducive to maintaining the industry competition order and avoiding vicious competition. Contact us Back to Sohu to see more Responsible Editor:. yunchtitanium.com