15CrMo Alloy Steel Pipe Specification in GB/T 3077 Standard.
Thickness: 8MM to 250 MM
Width: 1500mm to 4050mm
Length: 3000mm to 15000mm
Haihao Group is specialized in supplying Alloy steel pipe in 15CrMo. For more information of 15CrMo steel plates, please check them in following:
|15CrMo Alloy Steel Chemical Composition|
|Grade||The Element Max (%)|
|15CrMo Alloy Steel Mechanical Property|
GB/T 3077 15CrMo Alloy Steel Pipe Issues
For more information about GB/T 3077 Alloy steel plate, please clicking Mill Technical Information If GB/T 3077 15CrMo covers the following issues of hot rolled and forging alloy steel:
The standard applies to alloy structural steel bar 250mm maximum diameter or thickness. After consultation between the two sides of supply and demand, bar stock of diameter greater than 250 mm can also be provided The chemical compositions of steel grades specified in the standard also apply to steel ingot, billet and its productions.
The 15CrMo steel pearlite heat-resistant steel, high hot strength (δ b ≥ 440MPa) and oxidation resistance at high temperatures, and has a certain resistance to hydrogen corrosion. As the steel contains a higher content of Cr, C, and other alloying elements, the steel hardened tendency obvious, poor welding.
15CrMo alloy Steel Pipe Application:
Application For high, middle, low pressure boiler and pressure purpose 15CrMoG alloy tube of the principles of the purified hydrogen at 300-500 ℃, the hydrogen to be purified is passed through one side of the 15CrMoG alloy tube, the hydrogen is adsorbed on 15CrMoG alloy wall, palladium 4d electron shell lacks two electronics, it can with the hydrogen generating unstable chemical bonds (palladium and hydrogen, this reaction is reversible), palladium, hydrogen is ionized proton whose radius is 1.5 × 1015m, while the lattice constant ofpalladium 3.88x 10-10M (20 ° C time), it can be through 15CrMoG alloy tube role of palladium proton combined with electronic and re-formation of the hydrogen molecules to escape from the other side of the 15CrMoG alloy tube.
In the 15CrMoG the surface of the alloy tube, not dissociated gas impermeable, can therefore be to use 15CrMoG alloy tube to obtain high purity hydrogen.
15CrMo alloy Steel Pipe Manufacturing Process
1. Process Procedure:
Because of alloy pipes’ different manufacturing processes, they are divided into hot-rolled (extrusion) seamless and cold drawn (rolled) Seamless two. Cold drawn (rolled) pipe is divided into circular pipe and shaped pipe.
2. 15CrMo alloy tube Process Overview:
a. rolled (extrusion seamless): ro und tube perforation → heating → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → billet tube → straightening → hydrostatic test (or testing) → mark → storage. b. cold drawn (rolled) seamless steel pipe: round perforated tube → heating→ annealing → pickling → Heading oiled (copper) → multi-pass cold drawn (rolled) → heat treatment → straightening pipe billet straight → hydrostatic test (testing) → mark → storage.
15CrMo alloy pipe is one kind of seamless steel pipe, and its performance is much higher than the average of seamless steel tubes, because the steel contains Cr more inside. It can bear high temperature, and corrosion is better than other seamless pipes performance, so alloy tube is more widely in the petroleum, chemical, electric power, boiler and other industries. Competitive Advantage ·We can provide special specification pipes according to customers’ requests. ·We are also a manufacturer, so we can provide the products in conformity with your requirements rapidly. ·Our company has rich technical force and advanced production equipment and coordinated advanced test equipment and method. ·
Our products is accord with the standard of API 5L, API 5CT of American Petroleum Institute, the standard of ASTM A252,ASTM A53 and ASTM A500 of American Society Testing and Materials and standard of EN10217 and EN10219 of the European Union and passed the certification of ISO90012008 International quality management system.
15CrMo alloy steel pipe