US $600.0020 - 40,000 ton
US $560.0040,001 - 999,999 ton
Paramtents
Product seamless steel pipe
Standard GB/T 8163-1999, GB/T 8162-1999, GB/T 9711.1-1997, ASTM A106-2006, ASTM A53-2007, API 5L
Grade 10#-45#, 16Mn, ST35-ST52, Q195-Q345
Thickness 2.77 - 25mm
Section Shape Round
Outer Diameter 21.3 - 630 mm
Secondary Or Not Non-secondary
Application Hydraulic Pipe
Technique Hot Rolled
Packging & Delivery
Min Order20 ton
Briefing
Detailed
Sch40 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.
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