Structural steel is a standard construction material made from specific grades of steel and formed in a range of industrystandard crosssectional. Similar to a heattransfer system, the petroleum industry typically will use a seamless carbon steel pipe to transfer petroleum. Standard specifications for construction and maintenance. Q345rsa 515 gr 60 pressure vessel steel plate the specification we supplied of the pressure vessel plate, as follows. Q345 steel belongs to 16mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coilsheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship. Grade q345, q390 steel, mechanical properties, weldability, hot and cold processing performance and corrosion resistance are good, c, d, e grade steel has good low temperature toughness. Q345 steel property and specification are equivalent to a572. This table indicates the approximate relationship between international grades and their australian equivalents. Q345r owned the minimum yield strength at 345 mpa for thin thickness and tensile strength above 510 mpa. It provides all kinds of grades and types q345 steel grade with affordable price,high quality and fast shipping in world wide. The q in the steel number represents the yield strength.
In order to investigate the material properties of q345 16mn steel made in china at elevated temperatures, transient tests were carried out by using computer controlled testing machine, heating. Q195, q215, q235, q255 and q275 in the material what is. Many container manufacturers adpots these high tension strength to make offshore containers which can be used in deep oceans. Q345b china, gb european eu, en and wordwide steel equivalent grades these comparison table is only intended as an indication of the closest khown equivalent grades. Mechanical properties of chinese low alloy steel q345b. An experimental investigation of properties of q345 steel.
The openhearth furnace was the nations major source of steel until 1969, when this role was assumed by the relatively new. Q345 steel is an alternative to the old steel grades of 12mnv, 14mnnb, 18nb, 16mnre, 16mn, etc. If you have special requirements on specification and material, our company can. If you have a difficulty finding a right supplier, post your buying leads for free now. S690 ql is a high yield structural steel grade produced in compliance with en 10025. Q235 q345 square tube 3838 steel pipe ms hollow section pipe. Q345 steel belongs to 16mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coilsheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel container, steel oil tank, etc. Q345 steel specification and equivalent standard steel. Q355b steel grade released the recent release of the new gbt 15912018 standard has caused a lot of.
Gbt1591 q345b carbon and lowalloy highstrength steel plate. Guardrail accessories caps, bolt, nuts and offset blocks. This pipe typically is much larger thancarbon steel pipes used fo. Q345 steel specification and equivalent standard email. It is a low alloy steel c may 11, 2012 the chemical composition of structural steel is extremely important and highly regulated. Angle steel ismainly used in a variety of construction structure and engineering structures. The material is heat treated using the quench and temper process and has good bending and welding properties. Boiler steel plate q345r is the most used materials to build specified elevated boilers and pressure vessels. We can book the hotel for you before you come to china and arrange our driver. Guardrail accessory is essential to install highway barrier.
It is a low alloy steel c books, and member of astm a01 and b02 standard committees, i knew all too well the many pitfalls and challenges of writing such a handbook. To generate the thermal and mechanical properties of q345 steel pipe at elevated temperatures using two test methods. Any request for gbt1591 q345b carbon and lowalloy highstrength steel plate email. The source standarts should always be checked for the specific purpose for each material, in case of doubt. Q345 steel, q345a q345b q345c q345d q345e equivalent.
Pdf micromechanical fracture models of q345 steel and its weld. The equivalent steel grade with q345b are en 100252 s355jr,astm a572a572 a572 grade 50 and din 17100 st523. For more detailed comparisons contact bluescope steel technical staff or bluescope steel direct on 1800 800 789. Q235a included in 3 standards china standards gbt 3091 welded steel pipe for low pressure liquid delively gbt 3524 hotrolled cardon and low alloy structural steel strips. Material properties of q345 16mn steel under loading and. Q345 steel property and specification are equivalent to. Xinsteel can offer steel coils,steel plates,angles,channels for q345b materials. Txdot has established standards and specifications for the construction and maintenance of highways, streets and bridges. In the following table, you can see the maximum percentage levels of certain regulated elements present in european structural steel grades s235, s275, and s355. This page is your steel q345 specification onestop source for the competitive prices and quality from sewing machine suppliers and manufacturers. Continental steel pte ltd is a cidb registered supplier in the l5 category for all structural steel the company apart from being the supplier of a comprehensive range of quality steel sections, continental steel aims to extend its commitment to customers by enhancing its services and adding new facilities. The biggest impact of the new gbt 15912018 release is q345b, because the output of other grades has little effect.
According to gbt 1591 2008, q345 material has 5 quality grades. Structural steel s235, s275, s355 chemical composition azom. For the plate, it is basically to change the warranty book. Astm a240 316316l stainless steel plate in astm a240, type 316 and 316l is a chromium nickel austenitic steel, element molybdenum addition can enhances corrosion resistance of stainless steel, which is the main factor that 316316l is more.
Gbt1591 q345d carbon and lowalloy highstrength steel plate. A yield strength or yield point is the material property defined as the. Elongation for q345 is at the bottom end of the specification which is 0. Structural steel plate based on tensile strength international standards comparison 1. It has come to the attention of the astpm that grade q345, a standard in china, grade q345 it is not equivalent to s355 in terms of mechanical properties in.
Properties of q345b steel for plate material sciencing. And the stressstrain curves of q345 steel are obtained in the special industrial condition. Welded steel pipe q345b st52 q235b welded china tianjin yft q345b galvanized square steel pipetube online shopping. The flow stress decreases clearly in pace with the. Login or register to view lme steel scrap prices and monthly averages. The openhearth, the basic oxygen, and the electricarc pro cesses account for nearly all the steel tonnage produced in this coun try today. At the same time, this contractor says that they, in china, have developed. Q345 steel equivalent astm a572 grade 50, steel sheets makepolo.
Phosphorus, sulfur content slightly below the low alloy high strength steel q345 16mn steel, with the exception of tensile strength, elongation than q345 16mn steel increased, but also require the. Like most steels of its grade, it suffers elongation before it pulls apart, typically at 2021 percent of. Research on mechanical properties of q345 steel impacted. This is the book i never wanted to write, but always wanted to own. Q345 steel is one kind of chinese standardized low alloy, medium tensile strength steel made with a hotrolling process, used for a number of manufacturing purposes. Q345d china, gb european eu, en and wordwide steel equivalent grades these comparison table is only intended as an indication of the closest khown equivalent grades. Q345 steel equivalent astm a572 grade 50, steel sheets. High strength and lowalloy structural steel q345b manufactured. Free question service on world steel and metal non. Q345 steel belongs to 16mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coilsheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel. It is a fundamental factor which defines the mechanical properties of the steel. Grades are shown in their increasing tensile strength order.
Any request for gbt1591 q345d carbon and lowalloy highstrength steel plate email. Material q345b structural steel strength of materials scribd. Wholesale steel q345 specification steel q345 specification. Will it form an interoperability with the european standard s355 series. Q345r is the yield strength of steel for 340mpa special plates for pressure vessels, it has good mechanical properties and process performance. Xinsteel can offer steel coils, steel plates,angles,channels for q345b materials. This particular grade of steel is a general purpose manufacturing steel in construction equipment field. Q345 steel is a chinese gb standard low alloy high strength structural steel, material density is 7. Chemical composition and properties of european equivalents en for q345b china, gb. Gbt 1591 1994 high strength low alloy structural steels. Handbook of comparative handbook world steel standards. Jaway steel is a fully based on stainless steel metal products suppliers. Specifications hot rolled carbon steel equal angle q235b,ss400,s235jr,astm a36,q345b,s355jr 1.
Boiler pipes for refinery,heatexchangeing pipes, seamless steel pipes for pipeline. Shop for steel rectangle tube at americas metal superstore. There were many steel standards from around the world that were new to. The contractor is trying to change that material to steel q345b chinese material and code. Below are links to documents and important information for contractors and professional service providers. Q345 construction steel pipe cangzhou steel pipe group. An experimental investigation of properties of q345 steel pipe at. Abstractsignificant levels of creep deformations in structural steel members exposed to high temperatures has been widely observed in. Leave a message get a price exstock promotion center. The technical specifications for metal works gates, trash racks, etc. Q345b steel is a chinese standardized low alloy, medium tensile strength steel made with a hotrolling process, and is used for a number of manufacturing purposes. It is equivalent to a3 and c3 steel in the old standard gb70079 grade, and it is the grade of russian toct. Q345 steel equivalent astm a572 grade 50, find high quality products from steel sheets, sichuan liaofu special steel trading co.
China carbon steel low alloy steel plate q345 s355jr 1. In terms of chemical composition, 16mn and q345 are also different. Q345 steel is an alternative to the old steel grades of 12mnv, 14mnnb, 18nb. The imported product is a carbon manganese steel while locally produced tube is typically produced with low carbon microalloyed steel. A wide variety of q345 mechanical properties options are available to you, such as technique, grade, and application. A wide variety of q345 steel pipe options are available to you, such as technique, grade, and type. To some extent, the q345 possesses the same property and composition of asme a572, namely the q345 is equivalent to a572. Mainly used for ships, boilers, pressure vessels, oil tanks, bridges, power station equipment, material handling equipment and other welded structure of high load. These comparison table is only intended as an indication of the closest khown equivalent grades. Yield point of q345 steel plate decreases as plate thickness increases. Aiming at the reliability of q345 steel material impacted on high temperature and dynamic shock load, its mechanical properties are studied in this paper based on the split hopkinson pressure bar, the shpb test facility is introduced in detail. Hm hshaped steel q 235b, ss400,q345,gbt112632010,400x300.
Lastly but importantly the minimum yield of q345 is 345mpa which is not the same as the minimum yield of grade s355 which is 355mpa. Tests done on some of this material yielded the following chemistry, the table also. Q345 steel that has been widely used in china was studied under both. Usually, the steel is used directly without heat treatment. As we all know, chinas steel production is the largest variety of rebar, followed by steel plate and sheet, and the largest percent of steel grade produced in the plate is q235b, followed by q345b.
Except highway guardrails we also provide high quality accessories including caps, bolts, nuts, and offset blocks for providing a convenient installation for you. We assure that our products will satisfy your needs with competitive performance price ratio and best services. We could supply all kinds of steel products, machinary products or complete unit of production line if. Grade q345 imported tube does not conform to grade s355. What is the cell of a secondary ball mill made of what steel do they use 06. Oct 17, 2017 oct 17, 2017 q345 steel specification and equivalent standard. Gbt1591 q345d steel shall be done charpy vnotch impacting test under minus 20 centigrade. Thus the q345 has a much higher carbon equivalent content close to the maximum recommended maximum value of 0. An experimental investigation of properties of q345 steel pipe at elevated temperatures article in journal of constructional steel research 118. The best equivalent steel grade with q345r is a516 grade 70 in specification astm a516a516m. To investigate the mechanical properties of the q345 16mn steel made in china, steady state tests were carried out by using computer controlled test machine, heating device and specially.
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