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Help CenterSeamless Carbon Steel Pipe SCH40 For Oil Refinery And Chemical Plant Delivery With Mill Test Report
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Hemaokang Steel (Shandong) Co., Ltd. proudly introduces our Seamless Carbon Steel Pipe SCH40, engineered for the demanding environments of oil refineries and chemical plants. Manufactured with precision and delivered with a complete Mill Test Report, this pipe provides reliable performance, structural integrity, and corrosion resistance for critical fluid transportation. As an ISO9001 certified manufacturer with annual export value exceeding US$50 million, we ensure every length meets international quality standards and arrives at your site ready for immediate installation.
Our SCH40 seamless pipe is produced through hot rolling or cold drawing processes, ensuring a homogenous wall thickness and superior pressure-bearing capacity. The absence of a weld seam eliminates the risk of weld-related failures, making it a preferred choice for high-pressure steam, water, oil, and gas systems in process industries. Whether you are building a new refinery unit or upgrading an existing chemical plant, this pipe offers the balance of strength, ductility, and economy that your project demands.
Key Product Features & Benefits
- Seamless Construction: No longitudinal or spiral welds, reducing stress concentration and leak points.
- SCH40 Wall Thickness: Manufactured in accordance with ASME B36.10, providing excellent compatibility with standard flanges and fittings.
- High Tensile Strength: Achieves minimum yield strength of 30,000 psi (205 MPa) and tensile strength of 55,000 psi (380 MPa), suitable for moderate to high pressure service.
- Chemical Compatibility: Performs exceptionally well in handling petroleum derivatives, organic chemicals, and mildly corrosive fluids.
- Unified Dimensions: Outer diameter, wall thickness, and length are strictly controlled within tolerances, ensuring trouble-free installation.
- Surface Finished: Available in bare, varnished, oiled, or galvanized finishes to protect against atmospheric corrosion during transit and storage.
- End Preparation: Plain ends, beveled ends, or threaded ends are optional to meet your welding and joining requirements.
- Mill Test Report (MTR): Each consignment includes a certified MTR documenting chemical composition, mechanical properties, and heat treatment details, giving you full traceability.
Technical Specifications (Typical Grade: ASTM A106 Gr.B)
| Parameter | Value |
| Standard | ASTM A106 / A53 / API 5L |
| Outer Diameter (OD) | from 21.3 mm to 609.6 mm (1/2" to 24") |
| Wall Thickness Schedule | SCH40 (for all sizes up to 14"), wrought iron steel equivalent |
| Length | 5.8 m - 12 m (customized lengths available upon request) |
| Temperature Range | -29°C to 425°C (depending on grade and application) |
| Test Pressure | Hydrostatic testing per API 5L / EN 10246 |
| Marking | Stenciled with grade, heat number, size, and manufacturer's trace code |
Application Advantages for Refineries & Chemical Plants
In oil refineries, seamless pipes are subjected to extreme temperatures, pressure fluctuations, and aggressive process media. The SCH40 schedule offers a balanced wall thickness, making it ideal for pipe racks, transfer piping, and utility lines. The inclusion of a Mill Test Report confirms the integrity of each heat, which is often a purchase requirement for engineering, procurement, and construction (EPC) contractors. Our pipe is also available in lengths optimized for fewer joints, reducing welds and inspection costs.
Quality Assurance & Reliable Delivery
Our production facility in Liaocheng, Shandong, operates with a strict ISO9001 quality management system. Every heat is tracked from raw material to finished pipe, and our testing procedures include tensile testing, flattening tests, and dimensional inspection. Since our establishment in 2025, we have already built an international distribution network spanning North America, South America, Eastern and Western Europe, Southeast Asia, Africa, Oceania, the Middle East, and the Asia-Pacific region. With a dedicated team of 51–100 employees and an annual export value of US$50 million–US$100 million, we guarantee timely shipment from Qingdao port, ensuring your project keeps pace.
Why Choose Hemaokang Steel?
- ISO9001 certified production and quality control processes.
- Comprehensive Mill Test Report provided with every delivery.
- Flexible sourcing for both standard and special size requirements.
- Competitive factory-direct pricing with long-term supply capacity.
- Responsive technical support and after-sales consultation.
Frequently Asked Questions (FAQ)
-
Q: What does SCH40 mean?
A: SCH40 is a pipe wall thickness schedule defined by ASME B36.10. It specifies a wall thickness that provides a good balance between pressure rating and weight, suitable for many medium-pressure services. -
Q: Can you provide a Mill Test Report for each batch?
A: Yes. Every order comes with a full Mill Test Report that includes chemical composition, mechanical properties, and heat treatment details. Additional copies can be provided on request. -
Q: Which grades are available for this SCH40 seamless pipe?
A: Common grades include ASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B, and similar carbon steel grades. We can also supply higher-grade materials with minimum order quantities. -
Q: How is the pipe protected from corrosion before installation?
A: We offer options such as oiling, varnishing, or plastic end caps to protect the pipe ends and surfaces. For outdoor storage, shrink-wrapping or bundling can be arranged. -
Q: What is the maximum length you can produce?
A: Our standard maximum length is 12 meters. If you require double random lengths (approx. 11.6 m) or specific cut lengths, we can accommodate after assessing the outer diameter. -
Q: Is the pipe suitable for high-temperature steam service?
A: Yes. ASTM A106 Gr.B is designed for high-temperature service in refineries and boilers. The working temperature range typically goes up to 425°C when properly designed. -
Q: What are the packing and shipping methods?
A: For small diameters, pipes are bundled with steel strips; large diameters are individually wrapped. All shipments are exported via Qingdao port using containers or bulk vessel loading, according to the order quantity. -
Q: Can you supply fittings and flanges to complete the system?
A: Yes, we can source compatible flanges, fittings, and valves from partner mills to provide a complete package for your project, reducing procurement complexity.
Trusted by Global Engineering Teams
With our mill's export base in Qingdao and senior engineers averaging over a decade of experience in steel tube manufacturing, Hemaokang Steel has become a dependable partner for refineries, chemical plants, and construction contractors worldwide. Our ISO9001 quality management ensures consistency across every order. We invite you to contact us for a competitive quotation, or request a free sample to evaluate the quality of our seamless SCH40 carbon steel pipe.
Contact us today to discuss your specific size and specification needs — we are committed to responding within 24 hours.
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