Product Overview
Black carbon steel pipe is a hot-rolled carbon steel product with a dark oxide mill-scale finish, designed for non-corrosive, high-strength piping applications. Unlike galvanized or coated pipes, it offers cost-efficient performance for non-potable water, gas transmission, structural support, and industrial processing systems.
| Grade | Q195, Q215, Q345, S235JR, GRB-D, STK500, etc. |
| Tolerance | ±1% |
| Standard | GB/T3091-2001, BS1387-1985, DIN, EN10025, EN10219, JIS G3444-2004, ASTM, A53, SCH40/80STD, BS-EN10255-2004 |
| Surface | black/galvanized, can be customized |
| Alloy Or Not | Non-Alloy |
| Technique | ERW or Seamless |
| Thickness | 1-80mm, can be customized |
| Length | 6m, 12m, can be customized |
| Outer Diameter | 21-2000mm, can be customized |
| Application | Greenhouse construction, Architecture, Bridge, boiler, shipbuilding, power plant, pipeine, mechanical processing |
Material and Composition
This product is made from high-quality carbon structural steel as the raw material. The core grades include Q195, Q215, Q235, Q355 and other mainstream specifications. We can customize pipe materials with corresponding strength levels according to customer requirements. The material composition and content strictly follow the national standards. The details are as follows:
|
Element |
Fe | C | Mn | Si | S | P |
| Content range |
≥99.0% |
0.12%-0.20% |
0.30%-0.65% |
≤0.35% |
≤0.045% |
≤0.045% |
Based on high-quality substrates and precise component control, the product's mechanical performance is stable and reliable, capable of meeting the requirements of conventional pressure transportation and structural support. The core mechanical performance indicators of each grade are as follows
| Material grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation(%) | Applicable Scenario |
|
Q195 |
≥315 |
≥195 |
≥33 |
Lightweight temporary pipelines ,simple supports |
|
Q215 |
≥335 |
≥215 |
≥31 |
Indoor low-pressure water supply, pre-installed pipes |
|
Q235 |
≥375 |
≥235 |
≥25 |
General scenarios, industrial pipelines, scaffolding |
|
Q355 |
≥470 |
≥355 |
≥21 |
High-pressure transmission, heavy-load structural support |
Key Product Features
Heavy-Duty Strength Resists high pressure, heavy loads and impact, stable for critical industrial scenarios.
Precision Dimensional Tolerance – Consistent OD, wall thickness and length, cuts installation waste and rework costs.
Easy Fabrication – Smooth weldability & machinability, compatible with standard fittings for fast on-site assembly.
Cost-Efficient Bulk Supply – Optimized production lowers procurement costs without sacrificing performance.
Full System Compatibility – Works with global standard valves, flanges and connectors for seamless integration.
Manufacturing Process
We adopt two mainstream custom production processes:
hot rolling and cold drawing/cold rolling
with strict full-process control to guarantee dimensional precision and structural stability. Here's the streamlined workflow:
01
Raw material pre-treatment and forming
Premium steel billets/strips are purified and straightened, then shaped via hot rolling (high strength, oxide finish) or cold drawing/rolling (smooth surface, tight precision)
02
Fine processing after forming
Pipes are cut, chamfered and tested under ≥1.6MPa hydrostatic pressure plus NDT, with no anti-corrosion coating reserved for secondary processing.
03
Finished product compliance inspection
Full batch testing of dimensions, straightness and mechanical properties ensures standard compliance before delivery.
Standard and Certification
The product is strictly manufactured and inspected in accordance with authoritative standards both at home and abroad, ensuring compliance with quality and universality. The core standards for execution are as follows:
ASTM Standards: A53 (Grade A/B), A106 (Grade B), API 5L (Gr. B/X42-X65)
European Standards: DIN 1626, EN 10216, EN 10217
Asian Standards: JIS G3454, GB/T 8162, GB/T 8163
Quality Certifications: ISO 9001, CE, BV, SGS Test Reports
According to the customer's export region or project requirements, corresponding standards can be adapted for production, and complete quality inspection reports will be provided.
Industrial Applications
Our black carbon steel pipes are widely deployed across high-demand industries, serving as the backbone of reliable fluid and structural systems:
Oil & Gas – Crude oil, natural gas transmission & refinery piping
Construction & Infrastructure – Scaffolding, piling, steel structure & municipal engineering
Fluid Transportation – Non-potable water, compressed air & steam pipelines
Mechanical Manufacturing – Hydraulic/pneumatic systems & structural parts
Fire Protection & Utilities – Fire sprinkler systems & industrial drainage
Order & Procurement Guide
Minimum Order
Standard sizes: 10Tons; Custom sizes: 28-40Tons (negotiable for bulk projects)
Pricing & Quotation
Contact us with your specification details (OD, WT, length, grade, quantity) and destination port for a precise, competitive FOB/CIF quote.
Bulk orders enjoy exclusive wholesale discounts.
Lead Time
Stock items: 7–15 days; Custom production: 15–30 days
Why Choose Our Black Carbon Steel Pipe?
Strict Quality Control
Full-process inspection & third-party testing.
Flexible Customization
OEM/ODM supported. Custom sizes, lengths.
marking to fit your project
Bulk Supply Capacity
Large inventory and fast lead times.
Stable supply to avoid project delays.
global shipping
Global Logistics Support
Safe packaging, flexible shipping terms, on-time worldwide delivery.
Get Your Custom Quote Today
Ready to source high-quality black carbon steel pipes for your next project? Our technical and sales team is ready to provide professional support, free samples, and tailored solutions.
Contact Us Now | Email: youchengtechnology@163.com | WhatsApp: +86 131 9464 3843 | Submit Inquiry Below for Fast Response
FAQs
Q: What's the difference between seamless and ERW black carbon steel pipe?
A: Seamless pipes are made from solid steel billets, offering higher pressure resistance and uniform structure, suitable for critical high-pressure applications. ERW welded pipes are cost-effective with smooth surfaces, ideal for general fluid and structural use.
Q: Do you provide material test certificates (MTC)?
A: Yes, we provide original MTC, SGS/BV test reports, and compliance certificates with every shipment to ensure quality traceability.
Q: Can you handle small trial orders before bulk procurement?
A: Absolutely! We welcome trial orders to verify product quality and compatibility, helping you make confident bulk purchasing decisions.
Q: Is black carbon steel pipe suitable for outdoor use?
A: It can be used outdoors with proper anti-corrosion treatment (painting, coating). We offer customized surface protection to extend outdoor service life.
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