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Hot Expanded Smls Pipes

Name: Hot Expanded Smls Pipes
Brand: Ever Nickel
Price: 99.99 USD
Availability: InStock
Rating: 4.8 (50 reviews)

Product Category: Hot Expanded Pipe, Large Diameter Seamless Pipe, Hot Expanding Steel Pipe, Heavy Wall Seamless Pipe, Carbon Steel Hot Expanded Pipe, Customized SMLS Pipe.

Outer Diameter (OD): 219mm – 914.4mm (8" to 36")

Wall Thickness (WT): 6mm – 60mm

Length: 5.8mtr – 12mtr (Fixed or random lengths)

Process Advantage: Provides a cost-effective solution for large-diameter pipes that cannot be directly produced by standard hot rolling.

Technical Standards & Grades:

Line Pipe Standard: API 5L (Grades B, X42, X46, X52, X56, X60, X65 PSL1/PSL2)

Structural Standard: ASTM A53 (Grade B), ASTM A106 (Grade B, C), EN 10210 (S235JR, S355JR, S355J2H)

Boiler & Pressure: ASTM A192, ASTM A210, EN 10216-1

End Finish:Beveled Ends/Plain Ends/Victaulic Grooved Ends

Surface Treatment:

Anti-Corrosion: Black Painting/Varnish, Anti-rust oil

Coating: 3PE, FBE (Fusion Bonded Epoxy), Liquid Epoxy Coating, Galvanized (Hot Dipped)

Packing:In loose pieces (for large diameters)Nylon slings or thick ropes provided for easy loading/unloadingSteel bands for smaller diameter bundles /End protectors/Plastic caps to prevent contamination

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Description
Specification
Standard
Process
Packing

Hot Expanded Seamless Steel Pipe–Large Diameter & High-Efficiency Solutions

Our Hot Expanded Seamless Steel Pipes provide a cost-effective alternative for projects requiring large-diameter piping without the high cost of traditional large-billet seamless manufacturing. By utilizing a specialized thermal-mechanical expansion process, we transform standard seamless mother pipes into larger diameters while maintaining structural integrity and meeting strict international engineering standards.

Common Standards and Steel Grades

We supply hot expanded pipes across a wide range of carbon and alloy grades to ensure compatibility with your project's specific pressure and temperature requirements:

ASTM A106 / ASME SA106: Grades B and C for high-temperature service.

ASTM A53: Grades A and B for general mechanical and pressure applications.

API 5L: Pipeline steel for oil and gas (Grades B, X42, X46, X52, X56, X60).

ASTM A335: Alloy steel grades for high-temp power generation (P11, P22, P91).

EN 10210 / EN 10219: Hot finished structural hollow sections (S235JR, S355JR).

Dimensional Range & Specifications

The hot expansion process is the ideal choice for large-bore piping where standard seamless production is limited:

Feature	Specification Range
Outer Diameter (OD)	10” to 48” (273.1mm – 1219mm)
Wall Thickness (WT)	SCH 20, SCH 40, SCH 80, SCH STD (up to 40mm)
Length	Single Random (5.8m), Double Random (11.8m), or Custom Cut
Tolerance	Strictly per ASTM A530 or API 5L (OD ±1%, WT ±12.5%)
End Finish	Beveled Ends (30°±5°), Plain Ends, or Special Threading

Core Application Fields

Hot expanded pipes are widely utilized in heavy-duty infrastructure and energy sectors where large-volume fluid transport is required:

Oil & Gas Midstream: Large-diameter transmission pipelines for crude oil and natural gas.

Structural Engineering: Bridge piling, offshore platform legs, and stadium frameworks.

Water Conservancy: Main water supply lines and high-pressure drainage systems.

Thermal Power Plants: Low-pressure steam lines and cooling water circulation.

Petrochemical Industry: Large-scale refinery piping and storage tank connections.

Technical Parameters of Hot Expanded Seamless Steel Pipe

Nominal size		Outside	Nominal Wall Thickness (mm)
Nominal size		Diameter	Nominal Wall Thickness (mm)
DN	NPS	OD(MM)	SCH	SCH	SCH	STD	SCH	SCH	XS	SCH	SCH	SCH	SCH	SCH	XXS
DN	NPS	OD(MM)	10	20	30	STD	40	60	XS	80	100	120	140	160	XXS
200 250 300	8 10 12	219.1 273.1 323.9	3.76 4.19 4.57	6.35 6.35 6.35	7.04 7.80 8.38	8.18 9.27 9.53	8.18 9.27 10.31	10.31 12.70 14.27	12.70 12.70 12.70	12.70 15.09 17.48	15.09 18.26 21.44	18.26 21.44 25.40	20.62 25.40 28.58	23.01 28.58 33.32	22.23 25.40 25.40
350 400 450	14 16 18	355.6 406.4 457.2	6.35 6.35 6.35	7.92 7.92 7.92	9.53 9.53 11.13	9.53 9.53 9.53	11.13 12.70 14.27	15.09 16.66 19.05	12.70 12.70 12.70	19.05 21.44 23.83	23.83 26.19 29.36	27.79 30.96 34.93	31.75 36.53 39.67	35.71 40.49 45.24	— —
500 550 600	20 22 24	508 559 610	6.35 6.35 6.35	9.53 9.53 9.53	12.70 12.70 14.27	9.53 9.53 9.53	15.09 — 17.48	20.62 22.23 24.61	12.70 12.70 12.70	26.19 28.58 30.96	32.54 34.93 38.89	38.10 41.28 46.02	44.45 47.63 52.37	50.01 53.98 59.54	— —
500 550 600	20 22 24	508 559 610	6.35 6.35 6.35	9.53 9.53 9.53	12.70 12.70 14.27	9.53 9.53 9.53	15.09 — 17.48	20.62 22.23 24.61	12.70 12.70 12.70	26.19 28.58 30.96	32.54 34.93 38.89	38.10 41.28 46.02	44.45 47.63 52.37	50.01 53.98 59.54	— —
660 700 750	26 28 30	660 711 762	7.92 7.92 7.92	12.70 12.70 12.70	— 15.88 15.88	9.53 9.53 9.53	— — —	— —	12.70 12.70 12.70	— —	— —	— —	— —	— —	— —
800 850 900	32 34 36	813 864 914	7.92 7.92 7.92	12.70 12.70 12.70	15.88 15.88 15.88	9.53 9.53 9.53	17.48 17.48 19.05	— —	12.70 12.70 12.70	— —	— —	— —	— —	— —	— —