Cold- Rolled Seamless Stainless Steel Pipes (S.S Steel Tubes) in Accordance with ASTM A312 and A213, Grades TP304/304L and 316/316L

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry
• Certification: ISO9001
• Model NO.: GH-176
• Length: Random Length or Fixed length
• Material: 304 Stainless Steel
• Outer Diameter: 1/8inch-24inch
• Type: Seamless Pipe
• Wall Thickness: SCH 10S /40S/80S/160/XXS
• Material Source: TSINGSHAN,FUKAI,YONGXING
• Test: Hydraulic Test/ET/UT
• Delivery Time: Stock 7 Days; MTO 30 Days
• Trade Terms: EXW, FOB, CFR, CIF etc.
• Markings: According to A999/A999m
• Transport Package: Packed in Bundles or Plywooden Box
• Specification: SMLS Pipe
• Trademark: GH-STEEL
• Origin: Wenzhou, China
• HS Code: 7304419000
• Production Capacity: 2000ton Per Month

Product Description

Product Description

Product Name	Stainlesss Steel Seamless Tube/Pipe
Process	Seamless, formed through cold rolling or cold drawing, without weld seams, and with high structural uniformity.
Company	Wenzhou Guohao Steel Co., Ltd. — Manufacturer and Exporter of Stainless Steel and Nickel Alloy Products • Tax ID: 91330303679583678U             • Special Equipment Manufacturing License No.: TS2733T07–2029
Grade	• United States (ASTM/ASME): TP304, TP304L, TP304H, TP309S, TP310S, TP316L, TP316Ti, TP317L, TP321, TP321H, TP347H, N08904 (904L), S31254(254SMO), S30815 (253MA), S31803, S32205, S32750, S32760
	• Russia (GOST): 08X18H10, 08X18H10T, 12X18H10T, 10X17H13M2T, 10X23H18, 06XH28MDT
	• Europe (EN): 1.4301, 1.4306, 1.4307, 1.4311, 1.4541, 1.4550, 1.4401, 1.4404, 1.4571, 1.4429, 1.4435, 1.4436, 1.4439
	• China (GB/T): 06Cr19Ni10 (S30408), 022Cr19Ni10 (S30403), 07Cr19Ni10 (S30409), 06Cr23Ni13 (S30908), 06Cr25Ni20 (S31008), 06Cr17Ni12Mo2 (S31608), 022Cr17Ni12Mo2 (S31603), 07Cr17Ni12Mo2 (S31609), 06Cr17Ni12Mo2Ti (S31668), 06Cr19Ni13Mo3 (S31708), 022Cr19Ni13Mo3 (S31703), 06Cr18Ni11Ti (S32168), 07Cr19Ni11Ti (S32169), 06Cr18Ni11Nb (S34778), 07Cr18Ni11Nb (S34779), 015Cr20Ni18Mo6CuN (S31252), 015Cr21Ni26Mo5Cu2 (S39042), 022Cr22Ni5Mo3N (S22253), 022Cr23Ni5Mo3N (S22053), 022Cr25Ni7Mo4N (S25073), 022Cr25Ni7Mo4WCuN (S27603)
Standard	• ASTM A312,ASTM A213,ASTM A269,ASTM A789,ASTM A790 • GOST 9940–81,GOST 9941–2022 • EN 10216-5 • GB 14976—2025,GB/T 13296—2023,GB/T 21833—2020
Specification	• Nominal Pipe Size (NPS): 1/8 in to 24 in      Schedule Designations: SCH 10S, SCH 40S, SCH 80S, SCH 160, and SCH XXS (per ASME B36.19M/B36.10M)   • Mechanical Tubing Dimensions:     – Outside Diameter (OD): 6.35 mm to 108.0 mm (1/4 in to 4¼ in)     – Wall Thickness: 10 BWG to 20 BWG (in increments of 2 BWG)   • Metric Dimensions:     – OD Range: 6.0 mm to 630.0 mm     – Wall Thickness Range: 0.89 mm to 80.0 mm — applicable to both seamless pipe and precision tubing   • Length:     – Random Length: 5–7 m   – Fixed Length: 6.0 m, 6.096 m (20 ft), 6.1 m, or 12.0 m   – Custom Length: on request (feasibility & MOQ apply)
Pipe End	•Plain End (PE) •Beveled End (BE)
Surface Treatment Processes	• Acid Pickling   • Mechanical Polishing   • Bright Annealing (in Controlled Atmosphere)   • Sand Blasting   • Shot Blasting and Shot Peening
Quality Verification Tests and Inspections	• Tensile Strength                  • Flattening Test                • Flaring Test              • Dimensional Inspection        • Hardness Test •Hydrostatic Test or Electrical (Eddy Current) Test  or UT Ultrasonic Testing(select one) • Intergranular Corrosion Test in accordance with ASTM A262 Practice E        •PMI Positive Material Identification      •Grain Size Measurement (commonly required for high-temperature applications)
Weight Per Meter	Stainless Steel Pipe Weight Calculation Formula (per meter):  Weight (kg/m) = (OD - t) * t * C   where:  • OD = outside diameter (mm),  • t = wall thickness (mm),  • C = material-specific density coefficient:   AISI 304 / 304L /321 /347: C = 0.02491 ;AISI 316 / 316L /316Ti /317L: C = 0.02507   Example: For an AISI 304 seamless pipe with OD = 60.3 mm and t = 3.91 mm, the theoretical weight is 5.492 kg/m.
Pipe's Markings	Brand + SML + Standard + Grade + Specification + HEAT/LOT No.
Custom Processing Services Available	• Precision length cutting   • Cold bending (to specified radii and tolerances)   • Surface finishing: mechanical polishing (grit grades 180, 240, 320, 400, and 600)   • Surface conditioning: shot blasting or shot peening (per ASTM B851 / SAE AMS 2430)   • Hole-making: CNC drilling or precision punching   • Solvent-based degreasing (to remove oils, greases, and contaminants)   • Colour-coding application (per customer-specified scheme)
Lead Time	• Stock items: 7 working days from order confirmation. • Made-to-order products: 30 calendar days from receipt of confirmed order and technical specifications.
Payment Collection	We accept USD, EUR, and CNY—CNY payments processed via VTB Bank accounts to speed up cross-border settlement and cut remittance and export banking fees.
Export license	GUOHAO is certified manufacturer authorized to apply for and issue steel product export licenses—ensuring full regulatory compliance.
Price	All quotations are tax-inclusive, and pricing may be structured on a per-ton or per-meter basis.
Applications	Applications of Stainless Steel Seamless Pipe 1. Power generation 2. Petrochemical and chemical processing, including cracking furnaces and reactors 3. Oil and gas refining 4. Aerospace and automotive industries, specifically exhaust systems 5. Renewable energy 6. Food and pharmaceutical sectors

Packing & Delivery

Company Profile

WENZHOU GUOHAO STEEL CO.,LTD

Guohao Steel is proud to be one of the high-quality Stainless Steel Pipe Manufacturers in China, recognized for producing premium products that are suitable for a variety of industrial requirements.
Our stainless steel pipes are made with durability and accuracy in mind, so they can survive even the harshest conditions. Our clients receive dependable, long-lasting solutions from us since we are dedicated to quality.
As a reliable Stainless Steel Pipe Manufacturer, we offer a comprehensive range of stainless steel pipes designed for various applications. Our products are manufactured using the highest quality materials and state-of-the-art technology, ensuring superior performance and longevity. Whether you need pipes for construction, petrochemical, or marine applications, our Stainless Steel Pipe provides exceptional resistance to corrosion and wear, making them the ideal choice for your projects.We also manufacture and export a wide range of Stainless Steel Welded Pipes and Stainless Steel Seamless Pipes in various diameters, grades, and thicknesses as per the client's requirements. 

FAQ

1.Q: Do you support customization with other materials?

A: We offer custom seamless tubes in stainless steel, duplex steel, and nickel alloys—including 304, 304L, 304H, 309S, 310S, 316L, 316Ti, 317L, 321, 321H, 347H, 904L, 254SMO, 253MA S31803/S32205, S32750/S32760, Incoloy 800/800H/800HT/825, Inconel 600/601/625/718, Hastelloy C-22/C-276 and Monel 400/K-500.

2.Q: Are you a manufacturer or trader?

A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.

3.Q: Can we get some samples? Is there a charge?

A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight..

4.Q: Can we visit your factory?  

A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.

5.Q: How do you ensure the quality of the product?  

A: Our company's stainless steel pipe products are subject to full-process inspection in strict accordance with the enterprise quality manual. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.

6.Q: What is your delivery time? 

A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days

7.Q: Can you arrange shipment?  

A: Of course, we have freight forwarders who have been cooperating for many years.

8.Q: What if I don't have import experience?  

A: We handle all import logistics for first-time buyers. With a valid import license, we manage documentation (commercial invoice, packing list, bill of lading), customs classification, freight forwarding, and delivery—ensuring secure, on-time, and compliant shipment.

9.Q: Do you have an export license for steel products?

· A: We are a factory and can directly apply for export licenses for steel products and export them in compliance with regulations.

10.Q: Do you have a VTB account?

· A: We hold a VTB Bank account, reducing cross-border collection fees and export-related costs.