{"id":1503,"date":"2025-05-08T15:45:07","date_gmt":"2025-05-08T07:45:07","guid":{"rendered":"https:\/\/jblstainless.com\/?post_type=product&p=1503"},"modified":"2025-07-14T15:34:58","modified_gmt":"2025-07-14T07:34:58","slug":"304-stainless-steel-welded-pipe","status":"publish","type":"product","link":"https:\/\/jblstainless.com\/bn\/304-stainless-steel-welded-pipe\/","title":{"rendered":"304 Stainless Steel Welded Pipe"},"content":{"rendered":"
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304 stainless steel welded pipe is an austenitic stainless product rolled and fusion-welded along its length. It contains roughly 18\u201320% chromium and 8\u201311% nickel, giving it excellent general corrosion and oxidation resistance, and formability, which makes it stable in a variety of harsh environments.<\/p>

ASTM A312 covers 304\/304L grades for both seamless and welded pipe,specify its mechanical properties, dimensional accuracy and surface finish requirements, intended for high-temperature and corrosive service,suitable for medium and low pressure fluid transportation and decorative needs.<\/p>

Depending on the process and application, stainless steel welded pipes can be classified as straight seam welded (LSAW), spiral welded (SSAW) or high frequency welded (ERW), and are available in a wide range of surface options, such as pickled, polished or mirror finish.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\"stainless\t\t\t\t\t\t\t\t\t\t\t
LSAW<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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SSAW<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ERW<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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As a professional stainless steel welded pipe supplier, we are committed to providing you with high quality and customized 304 stainless steel welded pipe to ensure the smooth progress of your project.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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304 Stainless Steel Welded Pipe Specification<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Material<\/b>: 304, UNS S30400, 18Cr-8Ni<\/p>

Standard<\/b>: ASME SA-312\/ASTM A312;ASTM A269\/269M<\/p>

Wall Thickness<\/b>: SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS<\/p>

Size<\/b>: 1\/8\u2033 up to ~30\u2033,\u00a0custom available<\/p>

End<\/b>: Plain (mill); Beveled<\/p>

Surface Finish<\/b>: Annealed & pickled (2B finish);bright annealed (BA) or polished (#4, No.8 mirror); Electropolishing or passivation can be added for enhanced corrosion resistance<\/p>

Testing<\/b>: Factory or third-party testing (hydrostatic, PMI, hardness, etc.) per customer requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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304 Welded Pipe Schedule Chart<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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1\/8″ IPS(.405″O. D.)<\/th>3 1\/2″ IPS( 4.000″O. D.)<\/th><\/tr>
SCH 40, 80<\/td>SCH 10, 40, 80, 160, XXH<\/td><\/tr>
1\/4″ IPS(.540″O. D.)<\/th>4″ IPS(4.500″O. D.)<\/th><\/tr>
SCH 10, 40, 80<\/td>SCH 10, 40, 80, 160, XXH<\/td><\/tr>
3\/8″ IPS(.675″O. D.)<\/th>5″ IPS( 5.563″O. D.)<\/th><\/tr>
SCH 10, 40, 80<\/td>SCH 10, 40, 80, 160, XXH<\/td><\/tr>
1\/2″ IPS(.840″O. D.)<\/th>6″ IPS(6.625″O. D.)<\/th><\/tr>
SCH 5, 10, 40, 80, 160, XXH<\/td>SCH 5, 10, 40, 80, 120, 160, XXH<\/td><\/tr>
3\/4″ IPS(1.050″O. D.)<\/th>8 \u201d IPS(8.625″O. D.)<\/th><\/tr>
SCH 10, 40, 80, 160, XXH<\/td>SCH 5, 10, 40, 80, 120, 160, XXH<\/td><\/tr>
1″ IPS:(1.315\u2032O. D.)<\/th>10″ IPS(10.750″O. D.)<\/th><\/tr>
SCH 5, 10, 40, 80, 160, XXH<\/td>SCH 10, 20, 40, 80 (.500), TRUE 80(.500)<\/td><\/tr>
1-1\/4″ IPS(1.660″O. D.)<\/th>12″ IPS(12.750″O. D.)<\/th><\/tr>
SCH 10, 40, 80, 160, XXH<\/td>SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)<\/td><\/tr>
1-1\/2″ IPS(1.900″O. D.)<\/th>14″ IPS(14.000″O. D.)<\/th><\/tr>
SCH 10, 40, 80, 160, XXH<\/td>SCH10 (.188), SCH40 (.375)<\/td><\/tr>
2″ IPS(2.375″O. D.)<\/th>16″ IPS(16.000″O. D.)<\/th><\/tr>
SCH 10, 40, 80, 160, XXH<\/td>SCH10(.188), SCH40(.375)<\/td><\/tr>
2 1\/2″ IPS(2.875″O. D.)<\/th>18″ IPS (18.000″O. D.)<\/th><\/tr>
SCH 10, 40, 80, 160, XXH<\/td>SCH-40 (.375)<\/td><\/tr>
3″ IPS( 3.500″O. D.)<\/th>\u00a0<\/th><\/tr>
SCH 5, 10, 40, 80, 160, XXH<\/td>\u00a0<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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304 Stainless Steel Feature<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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1. Excellent corrosion resistance<\/b><\/p>

The 18% Cr content forms a passive oxide film that resists rust and weak acids, giving excellent corrosion resistance in atmospheric, fresh water, and many chemical environments.<\/p>

2.\u00a0High strength and durability<\/b><\/p>

High mechanical strength to withstand moderate pressures and temperatures, ensuring stable long-term operation.<\/p>

3. Flexible customization<\/b><\/p>

A wide range of sizes, materials and surface finish options are available to meet different project requirements.<\/p>

4. Easy maintenance<\/b><\/p>

Smooth surfaces are less prone to dirt accumulation, easy to clean and maintain,reducing operating costs.<\/p>

5. Cost-effective
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Compared to seamless tubes, welded pipes are cheaper to produce, making them ideal for bulk purchases.<\/p>

6. Environmentally sustainable<\/b><\/p>

100% recyclable, meeting green industry standards.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Mechanical Properties of 304 Stainless Steel\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tensile Strength: \u226575 ksi (\u2248515 MPa) (typical annealed 304 pipe).<\/p>

Yield Strength: \u226530 ksi (\u2248205 MPa)Elongation: \u226528% (in 2\u2033 gauge), indicating high ductility.<\/p>

Hardness: 188 HB (max) typical; work-hardened if bent or welded.

Temperature: Excellent strength at elevated temperatures. 304 SS retains its properties at high service temperatures (up to ~870\u00b0C continuous, ~925\u00b0C intermittent). It also remains tough at cryogenic temps.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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304 Welded Pipe Application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Due to its corrosion resistance and mechanical properties, 304 stainless steel welded pipes are widely used in the following fields:<\/p>

  • Industrial piping: for transportation of liquids, gases and solid particles, especially in the chemical, oil and gas industries.<\/li>
  • Construction industry: used for staircase railings, decorative pipes and other structural parts.<\/li>
  • Food processing: due to its non-toxic and harmless properties, it is commonly used in the manufacture of food machinery and equipment.<\/li>
  • Medical Devices: Used in medical devices and surgical equipment due to its antimicrobial properties.<\/li>
  • Home decoration: used in furniture, sanitary equipment, etc.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    304 Welded Pipe Compared to Seamless Pipe<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    304 Welded pipe is made by forming and welding plate or strip. It is more economical and available in longer continuous lengths than seamless.However, seamless pipe (drawn from billet) has a uniform grain structure without a weld seam, giving slightly higher strength and pressure capacity.<\/p>

    Seamless tubes are suitable for applications requiring high strength, high pressure and high tightness, but are more expensive; welded tubes are more suitable for applications with limited budgets and low strength requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    How to Choose 304 Stainless Steel Welded Pipe<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Suggestions: Choose the right process and surface finish according to project requirements. ( polished for sanitary use)<\/p>

    Note: Choose a supplier that complies with ASTM A312 or EN 10217-7 standards to ensure product quality.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

    304 stainless steel is a widely utilized austenitic stainless steel known for its exceptional corrosion resistance, strength, and versatility,can be stable in a variety of harsh environments<\/p>\n

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    • Outer diameter:DN6-DN600<\/li>\n
    • Wall thickness:0.5mm-50mm<\/li>\n
    • Customization: support specific size and surface treatment<\/li>\n<\/ul>","protected":false},"featured_media":1411,"template":"","meta":{"_eb_attr":""},"product_brand":[],"product_cat":[39],"product_tag":[47,62,61],"class_list":["post-1503","product","type-product","status-publish","has-post-thumbnail","product_cat-stainless-steel-welded-pipe","product_tag-304-stainless-steel-pipe","product_tag-304-stainless-steel-welded-pipe","product_tag-welded-ss-pipe","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product\/1503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":9,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product\/1503\/revisions"}],"predecessor-version":[{"id":1861,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product\/1503\/revisions\/1861"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/media\/1411"}],"wp:attachment":[{"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/media?parent=1503"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product_brand?post=1503"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product_cat?post=1503"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jblstainless.com\/bn\/wp-json\/wp\/v2\/product_tag?post=1503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}