STAINLESS STEEL SEAMLESS PIPE
manufacture since 2013
What we offer
EXPLORE OUR PRODUCTS
Austenitic stainless steel pipes
Super austenitic steel pipes
Duplex stainless steel pipes
Precision stainless steel pipes
Alloy steel pipes
Ferritic and Martenstic pipes
STAINLESS STEEL SEAMLESS PIPE SPECIFICATIONS
- Size Specification: Outer Diameter:6-762mm ,Wall thickness:0.5-50mm
- Executive standard:
GB/T12771-2008GB/T14975-2012,GB/T14976-2012,GB13296-2013,GB5310-2008,GB9948-2013,GB/T12771-2019,GB/T 21833-2008,GB/T30059-2013;JIS G 3463，JIS G 3459，GOST9941;DIN2462，DIN17456，DIN17458;ASTM A789,ASTM A790;ASTM A312,ASTM A213，ASTM A269, ASTM A 268,ASTM A511;EN10216-5;ASME SB165,ASME SB167,ASME SB407,ASME SB423，ASME SB444, ASME SB677; - Material:
304,304L,304N,321,321H,316,316L,316LN,316Ti,317L,347H,
316LMod,S30813,347HFG,310S,TP410,TP420,TP409 etc.
Our SERVICES
ENGINEERING & DESIGN SERVICES
structural frameworks, plumbing systems, and HVAC installations.
Learn About Steel merge
MULTIPLE PRODUCTION LINE & TESTING MACHINE
Heats the billet to the appropriate forging temperature.
Also known as a piercing press, this machine is used to pierce a hole in the heated billet to create a hollow shell
Used for producing smaller diameters with high throughput.
Corrects any bends or irregularities in the tube to ensure straightness.
Used in the cold drawing process to enhance the dimensional accuracy and surface finish of the pipes.
Heat treats the pipes to relieve stresses and improve ductility and toughness.
Removes scale and other impurities from the surface of the pipes, and passivates the surface to enhance corrosion resistance.
Our Featured Projects
Ling'ao, Hongyanhe nuclear power plant condensate fine treatment station
Fangjiashan Power Plant with Zhejiang Haiyan Power System Resources
Lu'an Coal-to-oil Project with China Chemical Engineering Second Construction
Gezhouba Dam Power Plant coporated with China Yangtze Power Co., Ltd.
Products Shipping Out
SEAMLESS PIPE PRODUCE PROCESS
Phase 1: Material Preparation
- Material Procurement
- Description: Sourcing of high-quality stainless steel billets from QINGSHAN and YONGXING
- Material Inspection
- Description: Rigorous quality control checks on the raw material, including spectroscopic analysis and mechanical property testing
Phase 2: Pre-Processing
- Billet Heating
- Description: The billets are heated in a furnace to prepare them for extrusion or piercing.
- Piercing
- Description: Initial hollowing of the billet is performed using a piercing press to create a tubular form
- Billet Heating
Phase 3: Tube Formation
Extrusion
- Description: The pierced billet is further elongated and shaped into a tube using a hydraulic extrusion press.
Elongation and Reduction
- Description: The tube undergoes elongation and reduction processes to achieve the desired dimensions and mechanical properties.
Phase 4: Cold Processing
Cold Rolling
- Description: Our state-of-the-art cold rolling mill refines the tube dimensions and enhances its mechanical properties.
Cold Drawing
- Description: Further refinement of tube dimensions and mechanical properties is achieved using our advanced cold drawing machines.
Phase 5: Heat Treatment
- Solution Annealing
- Description: Tubes are heat-treated to improve mechanical properties and relieve internal stresses.
Phase 6: Cutting
10.Cutting
- Description: Tubes need to be cutted according to clients’ requirements
Difference Between Pipe and Tubes
MOST POPULAR QUESTIONS
Advanced Quality Control Systems: Steel Merge employs cutting-edge quality control technologies, including automated inspection and testing processes. This ensures each product meets stringent quality standards.
Rigorous Material Sourcing: We source our raw materials from reputable suppliers, ensuring they meet high-quality standards. Each batch of material undergoes thorough testing before entering production.
Skilled Workforce and Training: Our team consists of experienced professionals, regularly trained in the latest manufacturing techniques. This ensures a deep understanding of quality standards and precision in execution.
Expansive Production Facilities: Our large manufacturing facilities are designed to handle high volumes of production, making us well-equipped for large-scale projects.
Scalable Workforce and Machinery: We have the ability to scale our workforce and machinery resources up or down based on project requirements, ensuring timely delivery regardless of the project size.
Streamlined Production Processes: Our production processes are optimized for efficiency, allowing us to manage and execute large-scale orders without compromising quality.
Custom Design Team: We have a dedicated team for custom design solutions, capable of translating unique client specifications into viable products.
Adaptable Manufacturing Lines: Our production lines are versatile, allowing for modifications and adaptations to accommodate specific design requirements.
Prototype Development and Approval: We offer prototype development and require client approval before mass production, ensuring the final product aligns perfectly with client expectations.
Tiered Pricing Model: SteelMerge operates on a tiered pricing structure, which is calibrated based on the product type, specifications, and volume. This model ensures competitive pricing aligned with market standards.
Bulk Order Incentives: For bulk orders, we offer scaled discounts. These discounts are structured to provide more significant savings as the order volume increases, making large-scale purchases economically advantageous for our clients.
Customized Quotations: Each client's needs are unique, and we provide customized quotes to reflect this. Our pricing team considers all aspects of the order to offer the most competitive and fair pricing.
Robust Logistics Network: We have established a comprehensive logistics network that enables us to ship efficiently both domestically and internationally.
Customized Shipping Solutions: For international orders, we tailor our shipping solutions to meet the specific requirements of the destination country, including compliance with local regulations.
Partnerships with Leading Carriers: Our partnerships with leading logistics carriers ensure reliable and timely deliveries. We negotiate the best shipping rates and pass these benefits on to our clients.
Real-Time Order Tracking: Clients are provided with real-time tracking of their shipments, ensuring transparency and peace of mind throughout the shipping process.
Quality Assurance Guarantee: In the unlikely event of receiving a defective product, our quality assurance guarantee comes into effect, covering returns and exchanges.
Streamlined Return Process: We have a streamlined process for handling returns or exchanges, ensuring a quick and hassle-free resolution for our clients.
Client Support Team: Our dedicated client support team handles all inquiries and issues related to returns or exchanges, providing prompt and effective solutions.
Expert Consultation Services: SteelMerge offers comprehensive consultation services to assist clients in selecting the most suitable products for their needs.
Technical Support Team: Our technical support team comprises industry experts who are available to provide guidance on product selection and usage.
Custom Solution Development: We work closely with clients to understand their specific requirements and develop custom solutions that cater to these needs.
After-Sales Support: Our commitment to client satisfaction extends beyond the purchase, with ongoing after-sales support to ensure optimal product performance and usage.
The price of stainless steel pipes is significantly influenced by various production factors. The grade and source of raw materials are pivotal, with higher-grade materials typically leading to increased costs due to their enhanced properties. The pickling process, essential for removing impurities and improving corrosion resistance, also contributes to the cost, particularly when extended or more intensive treatments are employed. Additionally, the frequency of cold drawing, which is crucial for achieving precise dimensional accuracy and mechanical strength, increases labor and production time, thereby raising expenses. Finally, the level of surface finishing, including detailed polishing and the application of protective coatings, plays a significant role in determining the final price, as more sophisticated finishing techniques usually result in higher manufacturing costs.
Austenitic stainless steels, like grades 304 and 316, are generally non-magnetic because they contain high levels of nickel and have a face-centered cubic crystal structure. However, some stainless steel types, like ferritic and martensitic grades (e.g., 430 and 410), are magnetic.
Clean the Pipe: Start by thoroughly cleaning the pipe's surface with a soft cloth or brush and an appropriate cleaner, such as soapy water or a specialized stainless steel cleaner, to remove all dirt, grease, and impurities.
Use Abrasives: For surface rust, lightly sand the rusted area with fine-grit sandpaper or a scouring paste. Ensure to sand in the direction of the metal grain to avoid additional scratches.
Chemical Rust Removal: For stubborn rust, consider using a chemical rust remover. Be sure to read the product instructions and take necessary safety precautions, such as wearing gloves and protective eyewear.
Clean and Neutralize: After using a rust remover, thoroughly rinse the surface with water, and then neutralize any remaining acidic substances with an alkaline solution, like a mixture of baking soda and water.
Plywood Case Packaging: Stainless steel seamless pipes are securely encased in durable plywood cases, ideal for safeguarding against damages during long-haul transportation. Plywood cases provide robust protection from mechanical impacts and environmental elements.
Woven Bag Packaging: For lighter or thinner stainless steel pipes, woven bag packaging offers a practical and economical solution. These bags are flexible yet sturdy, effectively protecting the pipes during handling and transit while keeping the packaging costs minimal.
For coastal areas or marine applications where saltwater corrosion is a concern, we recommend Grade 316 stainless steel, which includes molybdenum to enhance corrosion resistance. In industrial settings with exposure to chemicals, Grade 317, with even higher molybdenum content, might be more appropriate as it offers greater resistance to chemical corrosion. For less aggressive environments or general applications, Grade 304 stainless steel is usually sufficient, providing good corrosion resistance against a wide range of chemicals. Additionally, for extremely harsh conditions, like high-salinity or acidic environments, super austenitic grades like AL-6XN or duplex stainless steels might be the best options due to their superior corrosion-resistant properties."
Different Standards Material Comparison
| Chinese Standard(GB) | American Standard (AISI/ASTM)) | Japanese Standardm(JIS)) | German Standard (DIN/EN) | Russian Standard(GOST) |
|---|---|---|---|---|
| 0Cr18Ni9 | 304 | SUS304 | X5CrNi18-10 | 08Х18Н10 |
| 00Cr19Ni10 | 304L | SUS304L | X2CrNi19-11 | 03Х18Н11 |
| 1Cr18Ni9Ti | 321 | SUS321 | X6CrNiTi18-10 | 12Х18Н10Т |
| 0Cr17Ni12Mo2 | 316 | SUS316 | X2CrNiMo17-12-2 | 03Х17Н14М3 |
| 0Cr25Ni20 | 316L | SUS316L | X8CrNi25-21 | 20Х25Н20С2 |
| 1Cr13 | 410 | SUS410 | X12Cr13 | 12Х13 |
| 0Cr23Ni13 | 309S | SUS309S | X12CrNi23-13 | 20Х23Н18 |
| 0Cr17Ni12Mo2N | 316N | SUS316N | X5CrNiMo17-12-2N | - |
| 0Cr18Ni11Nb | 347 | SUS347 | X6CrNiNb18-10 | 08Х18Н12Б |
| 1Cr17Ni2 | 431 | SUS431 | X17CrNi16-2 | 14Х17Н2 |
| 0Cr17Ni7Al | 17-7PH | SUS631 | X7CrNiAl17-7 | 07Х17Н7АЛ |
| 2Cr13 | 420 | SUS420J1 | X20Cr13 | 20Х13 |
| 3Cr13 | 420J2 | SUS420J2 | X30Cr13 | 30Х13 |
CACULATING WAYS FOR DIFFERENT MATERIALS STEEL PIPE
Weight per meter(kg/m)=(OD−WT)×WT×0.02491
Weight per meter(kg/m)=(OD−WT)×WT×0.02507
Weight per meter(kg/m)=(OD−WT)×WT×0.02520
Weight per meter(kg/m)=(OD−WT)×WT×0.02450
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With our professional solution design, experience superior steel products and exceptional service for enhanced success.
