20MnG High Pressure Boiler Alloy Steel Round Tube Seamless Pipe

Bear “Customer initially, High quality first” in mind, we do the job closely with our customers and supply them with efficient and skilled providers for 20MnG High Pressure Boiler Alloy Steel Round Tube Seamless Pipe, Great top quality, competitive prices, prompt delivery and dependable services are guaranteed Kindly let’s know your quantity requirement under each size category so that we can inform you accordingly.
Bear “Customer initially, High quality first” in mind, we do the job closely with our customers and supply them with efficient and skilled providers for China 20MnG High Pressure Seamless Boiler Tubes, Our market share of our solutions has greatly increased yearly. If you are interested in any of our items or would like to discuss a custom order, you should feel free to contact us. We’re looking forward to forming successful business relationships with new clients around the world in the near future. We’re looking forward to your inquiry and order.

(1)Steel smelting method
GB 5310 20MnG steel will be smelted by electric furnace plus furnace refining, oxygen converter plus furnace refining or electroslag remelting method.

(2)Manufacturing methods and requirements for tube blanks
The tube blank can be produced by continuous casting, die casting or hot rolling (forging).

(3)Manufacturing method of steel tube
GB 5310 20MnG Steel tubes shall be manufactured by hot rolling (extrusion, expansion) or cold drawing (rolling).

It Is Mainly Used To Make High-Quality Carbon Structural Steel, Alloy Structural Steel And Stainless Heat-Resistant Steel Seamless Steel Pipes For High Pressure And Above Steam Boiler Pipes.

Mainly Used For High Pressure And High Temperature Service Of Boiler(Superheater Tube, Reheater Tube, Air Guide Tube, Main Steam Tube For High And Ultra High Pressure Boilers). Under The Action Of High Temperature Flue Gas And Water Vapor, The Tube Will Oxidize And Corrode. It Is Required That The Steel Pipe Has High Durability, High Resistance To Oxidation And Corrosion, And Good Structural Stability.

Grade Of High-Quality Carbon Structural Steel: 20g、20mng、25mng
Grade Of Alloy Structural Steel: 15mog、20mog、12crmog、15crmog、12cr2mog、12crmovg、12cr3movsitib, Etc
Grade Of Rust-Resistant Heat-Resistant Steel: 1cr18ni9 1cr18ni11nb

Length:
The Usual Length Of Steel Pipes Is 4 000 Mm ~ 12 000 Mm. After Consultation Between The Supplier And The Buyer, And Fill In The Contract, It Can Be Delivered Steel Pipes With A Length Greater Than 12 000 Mm Or Shorter Than I 000 Mm But Not Shorter Than 3 000 Mm; Short Length The Number Of Steel Pipes Less Than 4,000 Mm But Not Less Than 3,000 Mm Shall Not Exceed 5% Of The Total Number Of Steel Pipes Delivered

Delivery Weight:
When The Steel Pipe Is Delivered According To The Nominal Outer Diameter And Nominal Wall Thickness Or The Nominal Inner Diameter And Nominal Wall Thickness, The Steel Pipe Is Delivered According To The Actual Weight. It Can Also Be Delivered According To The Theoretical Weight.
When The Steel Pipe Is Delivered According To The Nominal Outer Diameter And Minimum Wall Thickness, The Steel Pipe Is Delivered According To The Actual Weight; The Supply And Demand Parties Negotiate. And It Is Indicated In The Contract. The Steel Pipe Can Also Be Delivered According To The Theoretical Weight.

Weight Tolerance:
According To The Requirements Of The Purchaser, After Consultation Between The Supplier And The Purchaser, And In The Contract, The Deviation Between The Actual Weight And The Theoretical Weight Of The Delivery Steel Pipe Shall Meet The Following Requirements:
A) Single Steel Pipe: ± 10%;
B) Each Batch Of Steel Pipes With A Minimum Size Of 10 T: ± 7.5%.

Hydraustatic Test:
The Steel Pipe Should Be Tested Hydraulically One By One. The Maximum Test Pressure Is 20 MPa. Under The Test Pressure, The Stabilization Time Should Be Not Less Than 10 S, And The Steel Pipe Should Not Leak.
After The User Agrees, The Hydraulic Test Can Be Replaced By Eddy Current Testing Or Magnetic Flux Leakage Testing.

Nondestructive Test:
Pipes That Require More Inspection Should Be Ultrasonically Inspected One By One. After The Negotiation Requires The Consent Of The Party And Is Specified In The Contract, Other Non-Destructive Testing Can Be Added.

Flattening Test:
Tubes With An Outer Diameter Greater Than 22 Mm Shall Be Subjected To A Flattening Test. No Visible Delamination, White Spots, Or Impurities Should Occur During The Entire Experiment.

Flaring Test:
According To The Requirements Of The Purchaser And Stated In The Contract, The Steel Pipe With Outer Diameter ≤76mm And Wall Thickness ≤8mm Can Be Done Flaring Test . The Experiment Was Performed At Room Temperature With A Taper Of 60 °. After The Flaring, The Flaring Rate Of The Outer Diameter Should Meet The Requirements Of The Following Table, And The Test Material Must Not Show Cracks Or Rips.

Bear “Customer initially, High quality first” in mind, we do the job closely with our customers and supply them with efficient and skilled providers.
20MnG High Pressure Boiler Alloy Steel Round Tube Seamless Pipe
Great top quality, competitive prices, prompt delivery and dependable services are guaranteed Kindly let’s know your quantity requirement under each size category so that we can inform you accordingly.
China 20MnG High Pressure Seamless Boiler Tubes
Our market share of our solutions has greatly increased yearly. If you are interested in any of our items or would like to discuss a custom order, you should feel free to contact us. We’re looking forward to forming successful business relationships with new clients around the world in the near future. We’re looking forward to your inquiry and order.