20 - 10,000 ton
group nameSeamless Steel Pipe(Tube)
Min Order20 ton
brand nameTYTSTEEL
model21.3-406mm
payment methodL/C, D/P, T/T, Western Union
update timeThu, 13 Mar 2014 17:53:04 GMT
Technique Hot Rolled
Grade 10#-45#, 16Mn, ST35-ST52, Q195-Q345
Thickness 2.5 - 20 mm
USAGE GAS/OIL/WATER ETC.Hydraulic Liquid
Outer Diameter 21.3 - 630 mm
Application Hydraulic Pipe
Min Order20 ton
Sch80 seamless steel tube
OD:21.3-630MM
WT:2.5MM-20MM
STD:GB/T8163-1999,ASTM A106,API5L
MATERIAL:B, 20#,Q345,ST52,X-42
MATERIAL ANALYSIS FOR 20#:
1.NAME:carbon constructional quality steel
2.Grades:20#
3.STD:GB/T699-1988
4.Characteristics AND applicant fiend:
Strength is slightly higher than Gr.15, few quenching ,no temper brittleness. With quality Cold deformation plasticity, generally usded for bending, rolling, bending and hammer processing etc. The performance of electric welding arch processing and contact welding is good, the thickness with gas welding is of small, shape is must be in strict or when use for parts with complex shape that is easily happening crack. when Cutting machining lengba, normalization is better than annealing and generally used to manufacture parts with high toughness and less stress.
5.Chemical composition:
C:0.17-0.24
Si:0.17-0.37
Mn:0.35-0.65
S:0.035max
P:0.035max
Cr:0.25max
Ni:0.25max
Cu:0.25max
6.Machinery properties:
Tensile Strength σb (MPa):≥410(42)
Yield strength σs (MPa):≥245(25)
EL% δ5 (%):≥25
Section contractility ψ (%):≥55
Hardness:without tempering,≤156HB
Gauage Length:25mm
7.Heat treatment procedure and microstructure:
Heat treatment procedure: normalization,910degree,air cooling
Mcrostructure:ferrite + pearlite
8.Delivery status:
Deliverty with heat treatment or with heat treatment( annealing,normalization or high temperature tempering). If necessary,heat treatment by notified in the contract,or will delivery without heat treatment.
If you have any interest in our products,please don't hesitate to contact me at your convenience timely,I am looking forward to receive your early reply!Thanks very much!!!
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