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Siddhgiri Overseas manufactures stainless steel rectangular pipe by reshaping round welded tube through progressive turks-head sizing dies, producing a precise rectangular cross-section with two unequal axes. Available in MT304, MT304L, MT316, MT316L, MT321 and MT201/MT202 grades to ASTM A554 mechanical tubing standards, in sizes from 20mm x 10mm up to 150mm x 100mm and larger. Because a rectangular section has unequal major and minor axes, it carries load more efficiently along its long axis than a square or round section of comparable size does — making it the preferred choice for beams, purlins, lintels, and other structural members where load direction is known and consistent. Every pipe is dimensionally checked before dispatch. Manufacturing from Mumbai since 1962, Siddhgiri Overseas supplies the full profile and grade range from a single source, backed by Mill Test Certificates as standard documentation.
Stainless steel rectangular pipe is a welded tubular section with a rectangular cross-section — two flat side pairs of unequal length joined at radiused corners. It is produced by taking round welded pipe and passing it through a series of turks-head sizing dies that progressively flatten and reshape the circular profile into a rectangle with defined major and minor axes.
The result is a closed, hollow section that combines the corrosion resistance and finish of stainless steel with a flat-faced, elongated geometry suited to mounting, fastening, and directional load-bearing applications that a round or square section cannot serve as efficiently.
Siddhgiri Overseas produces rectangular pipe across the full MT304 to MT201/MT202 grade range, with dimensional checks carried out before dispatch to confirm the section holds its specified major and minor axis dimensions and wall thickness.
The defining property of a rectangular section is that its two axes are unequal. A square or round pipe resists bending equally in every direction, because its cross-section is the same on every axis. A rectangular pipe does not — it resists bending far more strongly along its long (major) axis than along its short (minor) axis.
This directional strength is an advantage, not a limitation, whenever a structural member is known to carry load predominantly in one direction. A beam, purlin, or lintel spanning a fixed direction only needs to resist bending along that one axis. Orienting a rectangular section with its major axis aligned to the load direction gives the fabricator that bending resistance using less material than an equivalent square or round section would need to achieve the same performance.
In practice, this means rectangular pipe lets a design use a lighter, more material-efficient section wherever the load path is predictable — as opposed to square or round pipe, which is the better choice when load direction is unknown or multi-directional and equal resistance on every axis is required.
Siddhgiri Overseas supplies stainless steel rectangular pipe across the following ASTM A554 mechanical tubing grades:
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MT304 |
Austenitic, general purpose |
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MT304L |
Austenitic, low carbon |
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MT316 |
Austenitic, molybdenum-bearing |
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MT316L |
Austenitic, molybdenum-bearing, low carbon |
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MT321 |
Austenitic, titanium-stabilized |
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MT201 / MT202 |
Austenitic, chromium-manganese |
Sizing range runs from 20mm x 10mm up to 150mm x 100mm and larger, covering everything from light architectural framing sections through heavier structural profiles. Each pipe is dimensionally checked before dispatch, and Mill Test Certificates (MTC, typically to EN 10204 3.1) are provided as standard documentation alongside the shipment.
Stainless steel rectangular pipe from Siddhgiri Overseas is used across applications where a flat-faced, directionally strong profile is an advantage over a square or round section:
Siddhgiri Overseas is ISO certified for quality, occupational health & safety and environment management, and holds the import and export certification required to supply stainless steel pipe and tube to customers worldwide. Certificate copies are available on request for buyers who need them for their own compliance records.
Choose rectangular pipe when the structural member carries load predominantly along one known direction, such as a beam or purlin spanning a fixed span. Its unequal axes give greater bending resistance along the major axis than a square section of similar size, using less material for the same performance in that direction. Choose square pipe instead when load direction is unpredictable or multi-directional, since a square section resists bending equally on every axis.
A rectangular pipe resists bending most strongly when its major (long) axis is aligned with the direction the load is applied. Installing the section with the minor axis facing the load direction gives up most of the strength advantage the rectangular profile is chosen for, so orientation should match the expected load path during fabrication.
Sizes run from 20mm x 10mm up to 150mm x 100mm and larger, covering both light-gauge architectural sections and heavier structural profiles.
It starts as round welded pipe, which is passed through a series of turks-head sizing dies that progressively reshape the circular cross-section into a precise rectangle with defined major and minor axes.
Siddhgiri Overseas supplies rectangular pipe in MT304, MT304L, MT316, MT316L, MT321, and MT201/MT202 grades to ASTM A554 mechanical tubing standards, the same grade family offered across the pipe range.
Yes. Mill Test Certificates (MTC, typically to EN 10204 3.1) are provided as standard documentation, and each pipe is dimensionally checked before dispatch.
Because a beam typically only needs to resist bending in one direction, a rectangular section can be sized with a taller major axis and a shorter minor axis to match that need — delivering the required bending resistance with less overall material than a square section sized to resist bending equally in every direction.
