High-Temp ASTM A672 Welded Pipes: C60-C90, Power Plant Use
Premium Welded Steel Pipes: 18 Years of Trusted Global Supply Excellence
Tailored for industrial buyers worldwide—combining 18-year export expertise, strict quality compliance, and cost-effective solutions to power your projects.
What Are Welded Steel Pipes?
Welded steel pipes are high-performance tubular products crafted by bending steel sheets into cylindrical shapes, then joining seams via ERW (Electric Resistance Welding) or SAW (Submerged Arc Welding).
Compared to seamless pipes, they deliver:
20-30% lower costs for large-scale orders
Ultra-precise dimensions (±0.1mm tolerance)
High tensile strength (up to 700 MPa)
Making them a must-have for industrial projects requiring reliability and efficiency.
International Grade Portfolio
|
Global Size Compatibility
Fully aligned with ASME B36.10, DIN 2448, and ISO 4200 standards—no adaptation needed for international projects:
Outer Diameter (OD): 12.7mm (1/2") to 1600mm (63") – covers micro-pipes to large-diameter industrial tubes
Wall Thickness: SCH10, SCH20, SCH40, SCH80, XS, XXS – customizable to ±0.05mm for special needs
End Finishes: Beveled End (BE) for welding, Threaded End (TE) for quick assembly, Plain End (PE) for custom connections – all pre-treated for rust prevention.
Cross-Industry Applications
Trusted by 5000+ clients in 60+ countries for critical scenarios:
Municipal Infrastructure: Potable water distribution, sewage treatment (ASTM A53 – 50-year service life)
Offshore Energy: Deep-sea oil/gas platform pipelines (API 5L X70 – anti-salt corrosion, anti-wave impact)
Advanced Manufacturing: Machinery shafts, pressure storage tanks (ASTM A312 316L – food-grade, non-toxic)
Renewable Energy: Wind turbine towers, solar power plant supports (carbon steel – high load-bearing, anti-fatigue)
18-Year Export Advantages: Why Choose Us Over Competitors?
Factory-Direct Cost Savings: Skip middlemen to cut 30% of procurement costs—we own 3 production bases (annual capacity 500,000 tons) for bulk raw material sourcing.
Rapid Turnaround: 7-day sample delivery for custom grades/sizes; 10-15 days for standard orders (2x faster than industry average).
Global Compliance Mastery: We don’t just "meet" standards—we specialize in regional requirements:
EU: CE (EN 10217-1), REACH
USA: API 5L Monogram, ASTM certification
Asia: JIS G3452, GB/T 3091
Risk-Free After-Sales: 12-month quality warranty; if defects occur (we have a 0.01% defect rate), we offer free replacements + on-site technical support.
FAQ: Solve Your Top Concerns
Q1: How do you guarantee weld seam quality—critical for high-pressure projects?
A: Every pipe undergoes 3-tier testing: 100% automated ultrasonic testing (to detect micro-cracks), hydrostatic pressure testing (up to 200 bar, 30 minutes), and visual inspection (per API 5L Annex H). We provide a test report for each batch—traceable via QR code.
Q2: What’s the minimum order quantity (MOQ) for custom sizes?
A: Only 5 tons for standard grades (e.g., API 5L X42); for long-term clients (6+ months cooperation), MOQ is negotiable to 2 tons—perfect for small-batch trial projects.
Q3: Can you handle door-to-door delivery to remote locations (e.g., Africa, South America)?
A: Yes! We partner with Maersk, COSCO, and DHL for FOB, CIF, DDP, DAP terms. We manage customs clearance (all documents prepared in 24 hours) and last-mile delivery—98% of orders arrive on time (average delay <1 day).
Ready to Get Started?
Click "Get Free Quote" now—our technical team will send a customized solution (including material selection, size recommendation, and logistics plan) within 4 hours.
Your project deserves pipes that combine strength, compliance, and value—we deliver exactly that.
|
O.D. |
W.T. |
Length(m) |
|||||||
|
Inch |
mm |
Min.Yield Strength(Mpa) |
|||||||
|
Inch |
mm |
245(B) |
290(X42) |
360(X52) |
415(X60) |
450(X65) |
485(X70) |
555(X80) |
|
|
16 |
406 |
6.0-14.0 |
6.0-13.0 |
6.0-12.0 |
6.0-11.0 |
6.0-10.5 |
6.0-10.0 |
6.0-9.0 |
6.0-12.3 |
|
18 |
457 |
6.0-15.0 |
6.0-14.0 |
6.0-13.0 |
6.0-12.0 |
6.0-11.5 |
6.0-11.0 |
6.0-10.0 |
6.0-12.3 |
|
20 |
508 |
6.0-16.0 |
6.0-15.0 |
6.0-14.0 |
6.0-13.0 |
6.0-12.5 |
6.0-12.0 |
6.0-11.0 |
6.0-12.3 |
|
22 |
559 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-14.0 |
6.0-13.5 |
6.0-13.0 |
6.0-12.0 |
6.0-12.3 |
|
24 |
610 |
6.0-18.0 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-14.5 |
6.0-14.0 |
6.0-13.0 |
6.0-12.3 |
|
26 |
660 |
6.0-19.0 |
6.0-18.0 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-15.0 |
6.0-14.0 |
6.0-12.3 |
|
28 |
711 |
6.0-20.0 |
6.0-19.0 |
6.0-18.0 |
6.0-17.0 |
6.0-16.5 |
6.0-16.0 |
6.0-15.0 |
6.0-12.3 |
|
30 |
762 |
7.0-21.0 |
7.0-20.0 |
7.0-19.0 |
7.0-18.0 |
7.0-17.5 |
7.0-17.0 |
7.0-16.0 |
6.0-12.3 |
|
32 |
813 |
7.0-22.0 |
7.0-21.0 |
7.0-20.0 |
7.0-19.0 |
7.0-18.5 |
7.0-18.0 |
7.0-17.0 |
6.0-12.3 |
|
34 |
864 |
7.0-23.0 |
7.0-22.0 |
7.0-21.0 |
7.0-20.0 |
7.0-19.5 |
7.0-19.0 |
7.0-18.0 |
6.0-12.3 |
|
36 |
914 |
8.0-24.0 |
8.0-23.0 |
8.0-22.0 |
8.0-21.0 |
8.0-20.5 |
8.0-20.0 |
8.0-19.0 |
6.0-12.3 |
|
38 |
965 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.0 |
8.0-21.5 |
8.0-21.0 |
8.0-20.0 |
6.0-12.3 |
|
40 |
1016 |
8.0-26.0 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.5 |
8.0-22.0 |
8.0-21.0 |
6.0-12.3 |
|
42 |
1067 |
8.0-26.0 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.5 |
8.0-22.0 |
8.0-21.0 |
6.0-12.3 |
|
44 |
1118 |
9.0-27.0 |
9.0-26.0 |
9.0-24.5 |
9.0-23.5 |
9.0-22.8 |
9.0-22.0 |
9.0-21.0 |
6.0-12.3 |
|
46 |
1168 |
9.0-27.0 |
9.0-26.0 |
9.0-24.0 |
9.0-23.5 |
9.0-22.8 |
9.0-22.0 |
9.0-21.0 |
6.0-12.3 |
|
48 |
1219 |
9.0-28.0 |
9.0-27.0 |
9.0-25.4 |
9.0-24.0 |
9.0-23.5 |
9.0-23.0 |
9.0-22.0 |
6.0-12.3 |
|
52 |
1321 |
9.0-28.0 |
9.0-27.0 |
9.0-25.4 |
9.0-24.2 |
9.0-23.5 |
9.0-23.0 |
9.0-22.0 |
6.0-12.3 |
|
56 |
1422 |
10.0-29.0 |
10.0-28.0 |
10.0-26.0 |
10.0-24.5 |
10.0-23.8 |
10.0-23.0 |
10.0-22.0 |
6.0-12.3 |
|
60 |
1524 |
10.0-29.0 |
10.0-28.0 |
10.0-26.0 |
10.0-24.5 |
10.0-23.8 |
10.0-23.0 |
10.0-22.0 |
6.0-12.3 |
|
64 |
1626 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
|
68 |
1727 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
|
72 |
1829 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
Tolerance of Outside Diameter and Wall Thickness
|
Types |
Standard |
|||||
|
SY/T5040-2000 |
SY/T5037-2000 |
SY/T9711.1-1977 |
ASTM A252 |
AWWA C200-97 |
API 5L PSL1 |
|
|
Tube end OD deviation |
±0.5%D |
±0.5%D |
-0.79mm～+2.38mm |
<±0.1%T |
<±0.1%T |
±1.6mm |
|
Wall thickness |
±10.0%T |
D<508mm, ±12.5%T |
-8%T～+19.5%T |
<-12.5%T |
-8%T～+19.5%T |
5.0mm |
|
D>508mm, ±10.0%T |
T≥15.0mm, ±1.5mm |
|||||
Chemical Composition and Mechanical Properties
|
Standard |
Grade |
Chemical Composition(max)% |
Mechanical Properties(min) |
|||||
|
C |
Mn |
Si |
S |
P |
Yield Strength(Mpa) |
Tensile Strength(Mpa) |
||
|
GB/T700-2006 |
A |
0.22 |
1.4 |
0.35 |
0.050 |
0.045 |
235 |
370 |
|
B |
0.2 |
1.4 |
0.35 |
0.045 |
0.045 |
235 |
370 |
|
|
C |
0.17 |
1.4 |
0.35 |
0.040 |
0.040 |
235 |
370 |
|
|
D |
0.17 |
1.4 |
0.35 |
0.035 |
0.035 |
235 |
370 |
|
|
GB/T1591-2009 |
A |
0.2 |
1.7 |
0.5 |
0.035 |
0.035 |
345 |
470 |
|
B |
0.2 |
1.7 |
0.5 |
0.030 |
0.030 |
345 |
470 |
|
|
C |
0.2 |
1.7 |
0.5 |
0.030 |
0.030 |
345 |
470 |
|
|
BS En10025 |
S235JR |
0.17 |
1.4 |
- |
0.035 |
0.035 |
235 |
360 |
|
S275JR |
0.21 |
1.5 |
- |
0.035 |
0.035 |
275 |
410 |
|
|
S355JR |
0.24 |
1.6 |
- |
0.035 |
0.035 |
355 |
470 |
|
|
DIN 17100 |
ST37-2 |
0.2 |
- |
- |
0.050 |
0.050 |
225 |
340 |
|
ST44-2 |
0.21 |
- |
- |
0.050 |
0.050 |
265 |
410 |
|
|
ST52-3 |
0.2 |
1.6 |
0.55 |
0.040 |
0.040 |
345 |
490 |
|
|
JIS G3101 |
SS400 |
- |
- |
- |
0.050 |
0.050 |
235 |
400 |
|
SS490 |
- |
- |
- |
0.050 |
0.050 |
275 |
490 |
|
|
API 5L PSL1 |
A |
0.22 |
0.9 |
- |
0.03 |
0.03 |
210 |
335 |
|
B |
0.26 |
1.2 |
- |
0.03 |
0.03 |
245 |
415 |
|
|
X42 |
0.26 |
1.3 |
- |
0.03 |
0.03 |
290 |
415 |
|
|
X46 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
320 |
435 |
|
|
X52 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
360 |
460 |
|
|
X56 |
0.26 |
1.1 |
- |
0.03 |
0.03 |
390 |
490 |
|
|
X60 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
415 |
520 |
|
|
X65 |
0.26 |
1.45 |
- |
0.03 |
0.03 |
450 |
535 |
|
|
X70 |
0.26 |
1.65 |
- |
0.03 |
0.03 |
585 |
570 |
|
Katherine A. Fogg
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