Structural Tube, Structural Pipe, Mechanical Tube
Top quality —— Hydralic Test, X-ray, Offer-line UT, Eddy Current Inspection, etc.
Competitive price —— Factory production, own transport team, to ensure the reasonable price.
Fast delivery —— Many sets of advanced production equipment to produce, as well as perfect logistics system.
Superior service —— Professional after-sales personnel to provide product support, use, maintenance and other services.
Applicable to the general structure, mechanical structure with seamless steel tubes.
Outer Diameter:10.3mm - 711.2mm
Wall Thickness:Hot finish: 0.250" - 4.00",Cold drawn:0.035" - 0.875"Length:Random Length, Fixed Length, SRL, DRL
Standard and material
DIN2391 St35St45St52
ASTM A519 1010, 1020, 1025, 1035, 1045
ASTM A513 1010, 1020, 1025, 1035, 1040
BS6323 CFSCFS3ACFS4-11, EN10305-1 E215E235E355
JIS G 3441 SCM415TK SCM 430 TKSCM 440 TK
Heat treatment: Annealed, Normalized, Stress relieved, Cold finished, Quenched and Tempered
Delivery Condition: BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)
Test: Chemical Component Analysis, Mechanical Properties and other inspection
Third Inspection: BV, SGS,Lloyds ect.
Chemical Composition
Grade
C
Mn
P
S
Si
Cr
Mo
1010
0.08-0.13
0.30-0.60
≤0.04
≤0.05
-
-
-
1020
0.08-0.23
0.30-0.60
≤0.04
≤0.05
-
-
-
1045
0.43-0.50
0.60-0.90
≤0.04
≤0.05
-
-
-
4130
0.28-0.33
0.40-0.60
≤0.04
≤0.05
0.15-0.35
0.80-1.10
0.15-0.25
4140
0.38-0.43
0.75-1.00
≤0.04
≤0.05
0.15-0.35
0.80-1.10
0.15-0.25
Mechanical Properties
Grade
Condition
Tensile strength Mpa(min)
Yield stength Mpa(min)
Elongation %(min)
1020
CW
414
483
5
SR
345
448
10
A
193
331
30
N
234
379
22
1025
CW
448
517
5
SR
379
483
8
A
207
365
25
N
248
379
22
4130
SR
586
724
10
A
379
517
30
N
414
621
20
4140
SR
689
855
10
A
414
552
25
N
621
855
20
