Structural steel pipes are divided into carbon structural steel pipes and low-alloy high-strength structural steel pipes.Carbon structural steel pipes are mainly used in plants, bridges, ships and other buildings and pipes for general transportation of fluids.This kind of steel is generally used directly without heat treatment.Low alloy high strength structural steel pipes are widely used in ships, bridges, boilers, vehicles and important buildings due to their high strength and comprehensive mechanical properties.
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Specifications |
|
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Out Diameter |
1-1/4"-16" |
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Wall Thickness |
0.109"-0.562" |
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Length |
3.0m-18m |
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OD Tolerance |
+/- 0.5% |
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WT Tolerance |
+/- 10.00% |
Standard Structural Steel Pipes & Tubes Specifications & Grades:
GB/T 8162 Grades 10,20,35,45,Q355A,Q355B,Q355C,Q355D,Q355E;
DIN 1629 Grades St37.0, St44.0,St55 St52, Ck45;
ASTM A53/ASME SA53 Grades A & B;
ASTM A519/ASME SA519 Grades 1020,1026,4130,4135;
ASTM A500/ASME SA500 Grades A, B, C, D,E;
EN10210-1 Grade S235JRH, S275JOH, S275J2H, S355JOH, S355J2H, S355K2H;
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GB/T 8162 |
Standard Specification for pipelines, vessels and steel structures. |
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DIN 1629 |
Standard Specification used for circular unalloyed steel tubes subject to special requirements |
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ASTM A53 |
Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless. |
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ASTM A519 |
Standard Specification used for machine, automobile, and other mechanical accessory purposes. |
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ASTM A500 |
Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes |
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EN10210-1 |
Standard for hot finished structural hollow section of non-alloy and fine grain steels |
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Standard |
Grade |
Chemical composition(%) |
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|
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||||
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C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
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GB/T 8162 |
10 |
0.07-0.13 |
0.17-0.37 |
0.35-0.65 |
≤0.025 |
≤0.020 |
≤0.15 |
≤0.30 |
≤0.25 |
|
20 |
0.17-0.23 |
0.17-0.37 |
0.35-0.65 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.30 |
≤0.25 |
|
|
45 |
0.42-0.50 |
0.17-0.37 |
0.50-0.80 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.30 |
≤0.25 |
|
|
Q355B |
≤0.20 |
≤0.55 |
1.00-1.60 |
≤0.025 |
≤0.020 |
≤0.30 |
≤0.30 |
≤0.30 |
|
|
Q355D |
≤0.18 |
≤0.55 |
1.00-1.60 |
≤0.025 |
≤0.020 |
≤0.30 |
≤0.30 |
≤0.30 |
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DN1629 |
St37.0 |
≤0.17 |
0.17-0.37 |
0.35-0.65 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.25 |
≤0.25 |
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St44.0 |
≤0.21 |
0.17-0.37 |
0.50-0.80 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.25 |
≤0.25 |
|
|
St55 |
0.33-0.41 |
0.17-0.37 |
0.50-0.80 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.25 |
≤0.25 |
|
|
St52.0 |
≤0.22 |
≤0.55 |
≤1.60 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.25 |
≤0.25 |
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CK45 |
0.42-0.50 |
0.17-0.37 |
0.50-0.80 |
≤0.025 |
≤0.020 |
≤0.25 |
≤0.25 |
≤0.25 |
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ASTM A53 |
A |
≤0.25 |
- |
≤0.95 |
≤0.05 |
≤0.045 |
≤0.40 |
≤0.40 |
≤0.40 |
|
B |
≤0.30 |
- |
≤1.2 |
≤0.05 |
≤0.045 |
≤0.40 |
≤0.40 |
≤0.40 |
|
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ASTM A519 |
MT1020 |
0.15-0.25 |
- |
0.30-0.60 |
≤0.040 |
≤0.050 |
- |
- |
- |
|
1010 |
0.08-0.13 |
- |
0.30-0.60 |
≤0.040 |
≤0.050 |
- |
- |
- |
|
|
1020 |
0.18-0.23 |
- |
0.30-0.60 |
≤0.040 |
≤0.050 |
- |
- |
- |
|
|
1045 |
0.43-0.50 |
- |
0.60-0.90 |
≤0.040 |
≤0.050 |
- |
- |
- |
|
|
4130 |
0.28-0.33 |
0.15-0.35 |
0.40-0.60 |
≤0.040 |
≤0.040 |
0.80-1.10 |
- |
- |
|
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ASTM A500 |
A |
≤0.25 |
≥0.10 |
0.27-0.93 |
≤0.035 |
≤0.035 |
≤0.40 |
≤0.40 |
≤0.40 |
|
B |
≤0.30 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≤0.40 |
≤0.40 |
≤0.40 |
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|
C |
≤0.35 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≤0.40 |
≤0.40 |
≤0.40 |
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EN10210-1 |
S235JRH |
≤0.17 |
- |
≤1.40 |
≤0.040 |
≤0.040 |
- |
- |
- |
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S275JOH |
≤0.20 |
- |
≤1.50 |
≤0.035 |
≤0.035 |
- |
- |
- |
|
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S275J2H |
≤0.20 |
- |
≤1.50 |
≤0.030 |
≤0.030 |
- |
- |
- |
|
|
S355JOH |
≤0.22 |
≤0.55 |
≤1.60 |
≤0.035 |
≤0.035 |
- |
- |
- |
|
|
S355J2H |
≤0.22 |
≤0.55 |
≤1.60 |
≤0.030 |
≤0.030 |
- |
- |
- |
|
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S355K2H |
≤0.22 |
≤0.55 |
≤1.60 |
≤0.030 |
≤0.030 |
- |
- |
- |
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Standard |
Grade |
Mechanical properties |
||
|
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
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GB/T 8162 |
10 |
≥335 |
≥195 |
≥24 |
|
20 |
≥410 |
≥235 |
≥20 |
|
|
45 |
≥590 |
≥325 |
≥14 |
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Q355B |
470-630 |
≥325 |
≥20 |
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Q355D |
470-630 |
≥325 |
≥21 |
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DN1629 |
St37.0 |
350-480 |
≥235 |
≥25 |
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St44.0 |
420-550 |
≥275 |
≥21 |
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St55 |
540-645 |
≥295 |
≥17 |
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St52.0 |
500-650 |
≥355 |
≥21 |
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CK45 |
590-730 |
≥335 |
≥14 |
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ASTM A53 |
A |
≥330 |
≥205 |
- |
|
B |
≥415 |
≥240 |
- |
|
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ASTM A500 |
A |
≥450 |
≥330 |
- |
|
B |
≥580 |
≥420 |
- |
|
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C |
≥620 |
≥460 |
- |
|
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EN10210-1 |
S235JRH |
360-510 |
≥235 |
≥26 |
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S275JOH |
410-560 |
≥275 |
≥23 |
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S275J2H |
410-560 |
≥275 |
≥23 |
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S355JOH |
510-680 |
≥355 |
≥22 |
|
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S355J2H |
510-680 |
≥355 |
≥22 |
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S355K2H |
510-680 |
≥355 |
≥22 |
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