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HAOMEI Aluminum CO., LTD.

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Grades

Explore stainless steel seamless pipe grades including 304, 304L, 316, 316L, 321, duplex 2205, super duplex 2507, and more. Suitable for marine, offshore, shipbuilding, and industrial applications.

  • 304/304L Stainless Steel Seamless Pipe

    304/304L Stainless Steel Seamless Pipe

    304 / 304L stainless steel seamless pipe manufacturer and supplier. Available in ASTM A312, A213, A269 and EN 10216-5 standards with custom sizes, testing, and 3.1 / 3.2 certificates.


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  • 316/316L Stainless Steel Seamless Pipe

    316/316L Stainless Steel Seamless Pipe

    316/316L stainless steel seamless pipe with excellent corrosion resistance for marine, chemical, and industrial applications. Available in ASTM, ASME, and EN standards with custom sizes and inspection documents.


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  • 310S Stainless Steel Seamless Pipe

    310S Stainless Steel Seamless Pipe

    310S stainless steel seamless pipe with excellent oxidation resistance and high-temperature strength. Supplied in ASTM, ASME, and EN standards for furnaces, heat treatment, and high-temperature industrial applications.


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  • 321 Stainless Steel Seamless Pipe

    321 Stainless Steel Seamless Pipe

    321 stainless steel seamless pipe with excellent high-temperature resistance and good corrosion performance. Available in ASTM, ASME, and EN standards for heat exchangers, boilers, and industrial piping systems


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The Frequent FAQs

What is your product range??▾

We supply marine-grade stainless steel seamless pipe and tube, including 304/304L, 316L, 321, duplex 2205 and super duplex 2507, in various OD/WT and lengths.

Are you a manufacturer or a supplier?▾

We supply stainless steel seamless pipes for marine and offshore projects. Depending on the grade and size, we can offer mill production and stock supply. Please contact us with your specification for confirmation.

What information is required for a quotation?▾

Grade, standard (ASTM/EN), size (OD × WT or NPS × Sch), length (random/fixed), quantity, application, required certificates (3.1/3.2), destination port and Incoterms.

What is your typical lead time?▾

Lead time depends on grade, size and quantity. Stock items can be delivered faster, while mill production requires additional time. We will confirm lead time after receiving your full specification.

Do you provide samples?▾

For some sizes and grades, small sample pieces may be available. Please send your requirement and shipping details.

What standards can you supply?▾

Common standards include ASTM A312 (stainless steel pipe), ASTM A213/A269 (tubing), ASTM A790 (duplex pipe) and EN 10216-5. Please share your project specification for confirmation.