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Carbon Steel Seamless Tube With Mill Test Report 3.1, 12 Months Warranty, Standard Compliant, Free Cutting Service
Product Spotlights
Reliable Carbon Steel Seamless Tube with Mill Test Report 3.1 for full traceability, 12-month warranty, and free cutting service. Compliant with ASTM, API, DIN, JIS standards. Backed by ISO 9001 certified manufacturer with US$50-100M annual export. Durable, versatile, and cost-effective for oil, gas, construction, and mechanical applications.
Negotiable
MOQ: 1 Ton (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Carbon Steel (e.g., ASTM A106 Gr.B, API 5L Gr.B)
Warranty:
12 Months
outer_diameter:
21.3mm – 610mm
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao Port
Delivery Detail:
7 days
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Material
Other, Carbon Steel (e.g., ASTM A106 Gr.B, API 5L Gr.B)
Warranty
12 Months
outer_diameter
21.3mm – 610mm
wall_thickness
2mm – 60mm
standard
ASTM, API, DIN, JIS, GB (customizable)
surface_treatment
Black, Galvanized, Anti-rust Oil, Varnish
application
Oil & Gas, Construction, Boiler, Mechanical Structure
certification
ISO 9001, Mill Test Report 3.1
cutting_service
Free Cutting (custom lengths available)
packaging
Standard Export Sea-worthy Packing (Bundles, Crates, or as per request)
Hemaokang Steel (Shandong) Co., Ltd. is proud to offer our premium Carbon Steel Seamless Tube with Mill Test Report 3.1, backed by a 12-month warranty and full compliance with international standards. As a newly established (2025) but highly experienced team (51–100 employees) with an annual export value of US$50–100 million, we combine modern production capabilities with rigorous quality control. Our seamless tubes are manufactured from high-grade carbon steel, ensuring excellent strength, durability, and ductility for demanding applications. Each shipment includes a Mill Test Report 3.1 (EN 10204) for full traceability, and we also provide free cutting service to meet your exact length requirements. Whether you need pipes for oil & gas, construction, or mechanical structures, our products deliver consistent performance and reliability.
Key Features & Technical Specifications
- Material: Carbon steel grades such as ASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B, and other common standards. Optional high-strength grades available upon request.
- Dimensional Range: Outer diameter from 21.3 mm to 610 mm, wall thickness from 2 mm to 60 mm. Custom sizes are welcome.
- Manufacturing Process: Hot-rolled or cold-drawn seamless process ensures uniform wall thickness and superior mechanical properties.
- Surface Treatment: Options include black (mill finish), galvanized, anti-rust oil coating, or varnish. Coatings can be customized for specific environments.
- Inspection & Testing: Every tube undergoes hydrostatic testing, eddy current testing, and dimensional checks. Mill Test Report 3.1 (EN 10204) is provided with each shipment.
- Warranty: 12 months from the date of delivery against manufacturing defects under normal service conditions.
- Free Cutting Service: We cut tubes to your specified lengths at no extra charge, reducing waste and installation time.
| Parameter | Standard Range | Notes |
|---|---|---|
| Outer Diameter | 21.3 – 610 mm | Custom diameters available |
| Wall Thickness | 2 – 60 mm | According to schedule (SCH 10-XXS) |
| Length | 5.8 – 12 m (random/fixed) | Free cutting to any length |
| Tensile Strength | ≥ 415 MPa (ASTM A106 Gr.B) | Varies by grade |
| Yield Strength | ≥ 240 MPa | Per standard |
| End Finish | Plain end, beveled, or threaded | As per request |
Advantages for Your Business
- Full Traceability: Every tube is accompanied by a Mill Test Report 3.1, providing chemical composition and mechanical property data for quality assurance and regulatory compliance.
- Standard Compliance: Our seamless tubes meet ASTM, API, DIN, JIS, and GB standards, making them suitable for both domestic and international projects.
- Cost Savings: With free cutting service, you eliminate secondary processing costs and reduce material waste. The 12-month warranty further protects your investment.
- Versatile Applications: Ideal for high-pressure pipelines, boiler tubes, heat exchangers, structural supports, and general mechanical engineering.
- Reliable Supply: Hemaokang Steel has a strong supply chain and export capacity, ensuring timely delivery to markets across North America, South America, Europe, Asia, Africa, and Oceania.
Why Choose Hemaokang Steel?
Since our founding in 2025, we have rapidly grown to achieve an annual export value of US$50–100 million — a testament to our product quality and customer trust. Our team of 51–100 professionals is dedicated to rigorous quality control, from raw material sourcing to final inspection. We hold ISO 9001 certification for our quality management system, which ensures consistent production standards. Our main markets span the globe, including North America, South America, Europe, Southeast Asia, Africa, and Oceania, demonstrating our ability to meet diverse international requirements. With our commitment to standard compliance, transparent documentation (MTR 3.1), and free cutting service, we provide a hassle-free purchasing experience. Contact us today for a quote or to discuss your specific tube needs — we are eager to be your long-term partner.
Frequently Asked Questions (FAQ)
-
What is a Mill Test Report 3.1?
It is a test certificate per EN 10204 type 3.1, issued by the manufacturer and verified by an independent inspector. It includes the chemical composition, mechanical properties, and test results of the product. -
Can I get custom lengths without extra cost?
Yes, we offer free cutting service. You can specify any length within the production range, and we will cut the tubes accordingly at no additional charge. -
What standards do your tubes comply with?
Our tubes can be manufactured according to ASTM A106, A53, API 5L, DIN 1629, JIS G3454, GB/T 8163, and other standards. Please specify your required standard when ordering. -
What is the lead time for typical orders?
Lead time depends on quantity and specifications. For standard sizes, it is usually 15–30 days after order confirmation. We can expedite urgent orders upon request. -
Do you offer third-party inspection?
Yes, we welcome third-party inspection by SGS, BV, or other agencies. The cost can be arranged according to the customer's preference. -
What sizes are available for the free cutting service?
Free cutting applies to any length from 0.5 m to 12 m, within the outer diameter and wall thickness range. For very short lengths, please consult our sales team. -
How do you pack the tubes for export?
We use standard sea-worthy packing: bundles with steel straps, wooden crates for small diameters, or plastic caps for end protection. Custom packaging is available. -
Can I get a sample before placing a bulk order?
Yes, samples are available. Please contact us to discuss sample cost and shipping. We will provide a sample with the relevant MTR.
Send Inquiry to This Supplier
1Yr
Year Established
2025
Annual Export Value
US$50 Million - US$100 Million
Total Employees
51 - 100 People
Product Certifications
ISO9001
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