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  • Mumbai 400004 - India.
  • +919819823285
  • info@starentps.com

Comprehensive Range of Oval, Square & Rectangular Pipes in SS 304, 316, 202, CS, MS & Galvanized Grades. Available in Sizes from 10x10mm to 300x200mm with Thicknesses 0.5mm to 20mm. Conforming to ASTM A554, A500, EN 10210, EN 10219. Custom Lengths & Finishes Supplied with MTC.

We are an ISO 9001:2015 certified manufacturer and exporter specializing in high-quality Oval, Square, and Rectangular Pipes, engineered to meet the rigorous demands of modern industries. These pipes are fabricated from premium raw materials including carbon steel, stainless steel (grades 304, 316), and alloy steel, ensuring excellent mechanical strength, corrosion resistance, and durability. Our products adhere to internationally recognized standards such as ASTM A500, EN 10219, IS 4923, and DIN, guaranteeing compliance with both dimensional and chemical specifications required by global customers.

The manufacturing process of oval, square, and rectangular pipes involves cold forming and electric resistance welding (ERW) or high-frequency welding (HFW) of flat steel strips or coils. The steel strip is first roll-formed into the desired shape and then welded longitudinally to form a seamless-looking hollow section. Post-welding treatments such as heat treatment, straightening, sizing, and surface finishing ensure uniform wall thickness, dimensional accuracy, and enhanced mechanical properties. Pipes are available in a wide range of dimensions, with outer sizes typically from 20mm up to 600mm in width or diameter, and wall thicknesses ranging from 1.5mm to 20mm or more, based on customer requirements.

Our Oval, Square, and Rectangular Pipes come in various grades including ASTM A500 Grade B and C, ASTM A513, and EN 10305, offering exceptional tensile strength, yield strength, and elongation. Chemical compositions are strictly controlled, with carbon content typically between 0.15% to 0.25%, manganese ranging from 0.5% to 1.2%, and trace amounts of phosphorus and sulfur kept minimal for improved weldability and toughness. These pipes are tested for mechanical properties such as tensile strength, yield strength, impact resistance, and hardness, in addition to non-destructive testing (NDT) methods like ultrasonic and radiographic inspection to ensure structural integrity.

The versatility of oval, square, and rectangular pipes makes them ideal for a broad range of applications including structural frameworks, construction scaffolding, automotive chassis, agricultural machinery, furniture manufacturing, fencing, and architectural projects. Their flat surfaces allow easier joining and welding compared to circular pipes, making them favored in fabrication where precision and aesthetics are important. Oval pipes, with their unique streamlined shape, are often used in automotive exhaust systems and decorative structures where aerodynamic or design considerations are key. We export our pipes to major international markets such as Europe, Russia, Saudi Arabia, Oman, Qatar, and the USA, maintaining strict quality control and international shipping standards. Packaging solutions include steel bundling, wooden crates, plastic wrapping, and end caps to protect against corrosion and physical damage during transit. Each shipment is accompanied by a comprehensive Mill Test Certificate (MTC) detailing chemical analysis, mechanical testing results, and compliance with relevant standards, ensuring complete traceability and customer satisfaction.

Comprehensive Range of Seamless & Welded Oval, Square & Rectangular Pipes. Finishes Available Include Polished, Coated, and Galvanized. Oval Types Include Flat Oval, Elliptical & D-Type. Custom Orders Accepted.

Oval, Square & Rectangular Pipes Specifications

Specification Details
Product Type Oval, Square & Rectangular Pipes
From Round Tube, Flat Sheet Forming, Extruded Tube
Type Welded, Seamless, Cold Drawn
Size Range Square Pipes: 10mm x 10mm to 300mm x 300mm
Rectangular Pipes: 20mm x 10mm to 400mm x 200mm
Oval Pipes: 10mm x 1mm to 100mm x 2mm
Wall Thickness 0.5mm to 20mm
Length Up to 12 meters, Standard: 6m or Custom Cut Lengths
Material Stainless Steel (AISI 304, 304L, 316, 316L, 409, 430)
Carbon Steel (IS 1239, IS 3589, ASTM A500, A513)
Mild Steel, Galvanized Steel, Alloy Steel
Standards ASTM A554, A500, EN 10210, EN 10219, DIN 2395, IS 4923
Surface Finish Polished, Satin, Mirror, Pickled, Galvanized, Painted, Mill Finish
End Type Plain End (PE), Beveled End (BE), Threaded End (TE)
Testing & Inspection Hydro Test, Eddy Current Test, Dimensional Inspection, Visual Inspection, Third-Party Inspection (TPI)
Certification Mill Test Certificate (MTC) as per EN 10204 3.1 / 3.2
Applications Architectural Fabrication, Furniture Frames, Railings, Automotive, Structural Engineering, Sign Boards, Handrails, Construction

Types of Pipes & Tubes

Hot rolled and defect-free – Seamless Pipes & Tubes built for strength and longevity.

Strong, smooth, and reliable – Welded Pipes & Tubes for every industrial need.

Seamless look, welded strength — ERW Pipes & Tubes built to perform.

Tubing is the backbone of modern construction and manufacturing

Oval pipes offer a unique shape ideal for modern design and efficient flow systems.

Square and rectangular pipes are essential in construction, fabrication, and structural design.

Their versatility and durability make them a go-to choice for frames, supports, and structural components.

Their small diameter allows accurate flow regulation and heat exchange efficiency.

Oval Pipe Size Chart

Oval Pipes Wall Thickness & Weight
Nominal Pipe Size Outside Diameter Schedule 5S Schedule 10S Schedule 40S
W.T. W.T. W.T.
in inch in mm mm kg/Mt. mm kg/Mt. mm kg/Mt.
1/2 21.34 1.65 0.81 2.11 1.01 2.77 1.28
3/4 26.67 1.65 1.03 2.11 1.3 2.87 1.70
1 33.4 1.65 1.31 2.77 2.12 3.38 2.53
1 1/4 42.16 1.65 1.67 2.77 2.72 3.56 3.43
1 1/2 48.26 1.65 1.92 2.77 3.15 3.68 4.10
2 60.33 1.65 2.42 2.77 3.98 3.91 5.51
2 1/2 73.03 2.11 3.74 3.05 5.03 5.16 8.75
3 88.9 2.11 4.57 3.05 6.54 5.49 11.44
3 1/2 101.6 2.11 5.25 3.05 7.51 5.74 13.75
4 114.3 2.11 5.95 3.05 8.48 6.02 16.29
5 141.3 2.77 9.59 3.4 11.72 6.55 22.0

Square Pipe Sizes

Size (mm) Weight (kg/mtr) Size (mm) Weight (kg/mtr)
20 * 20 * 2.5 1.35 20 * 20 * 2.0 1.12
100 * 100 * 5.0 14.80 100 * 100 * 5.0 14.80
25 * 25 * 3.0 2.04 25 * 25 * 2.5 1.74
40 * 40 * 1.5 1.81 30 * 30 * 3.0 2.51
120 * 120 * 6.3 22.30 120 * 120 * 6.0 21.30
50 * 50 * 4.0 5.72 50 * 50 * 3.0 4.39
90 * 90 * 8.0 20.40 90 * 90 * 6.0 15.76
70 * 70 * 3.0 6.28 60 * 60 * 6.0 9.45
180 * 180 * 10 53.00 180 * 180 * 8 43.00
80 * 80 * 3.0 7.22 75 * 75 * 3.0 7.07
200 * 200 * 8 48.00 200 * 200 * 6.3 38.20
150 * 150 * 5.0 22.70 140 * 140 * 12.5 49.50
250 * 250 * 16 117.00 250 * 250 * 12.5 92.60

Size Schedule Chart of Rectangular Pipe

SS Rectangle Pipe OD
milimeter
Pipe WT
milimeter
in. Sch Kg/m
13.72 1.65 1/4 10S 0.50
13.72 2.24 1/4 40S 0.64
13.72 3.02 1/4 80S 0.81
17.15 1.65 3/8 10S 0.64
17.15 2.31 3/8 40S 0.86
17.15 3.20 3/8 80S 1.12
21.34 2.11 1/2 10S 1.02
21.34 2.77 1/2 40S 1.29
21.34 3.73 1/2 80S 1.65
26.67 2.11 3/4 10S 1.30
26.67 2.87 3/4 40S 1.71
26.67 3.91 3/4 80S 2.23
33.40 2.77 1 10S 2.13
33.40 3.38 1 40S 2.54
33.40 4.55 1 80S 3.29
33.40 6.352) 1 160 4.30
42.16 2.77 10S 2.73
42.16 3.56 40S 3.44
42.16 4.85 80S 4.53
42.16 6.352) 160 5.69
48.26 2.77 10S 3.16
48.26 3.68 40S 4.11
48.26 5.08 80S 5.49
60.33 2.77 2 10S 3.99
60.33 3.91 2 40S 5.52
60.33 5.54 2 80S 7.60
60.33 8.742) 2 160 11.29
73.03 3.05 10S 5.35
73.03 5.16 40S 8.77
73.03 7.01 80S 11.59
88.90 3.05 3 10S 6.56
88.90 5.49 3 40S 11.47
88.90 7.62 3 80S 15.51
88.90 11.132) 3 160 21.67
101.60 3.05 10S 7.53
101.60 5.74 40S 13.78
101.60 8.08 80S 18.92
114.30 3.05 4 10S 8.50
114.30 6.02 4 40S 16.32
114.30 8.56 4 80S 22.67
114.30 13.492) 4 160 34.05
141.30 6.55 5 40S 22.10
141.30 9.53 5 80S 31.44
141.30 15.882) 5 160 49.87
168.28 3.4 6 10S 14.04
168.28 7.11 6 40S 28.69
168.28 10.97 6 80S 43.21
168.28 14.27 6 120 54.75
168.28 18.262) 6 160 68.59
219.08 8.18 8 40S 43.20
219.08 12.7 8 80S 65.63
219.08 18.23 8 120 91.30
219.08 23.012) 8 160 112.97

Worldwide Supply of Rectangular Pipes

Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.

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As an ISO 9001:2015, 14001:2004, and 18001:2007 certified company, we specialize in catering to the stringent demands of industries such as Oil & Gas, Petrochemical, Power Generation, and Nuclear Sectors.

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