Product Category

Latest news list

How to bend exhaust pipe efficiently without kinks and damage?

You need custom curves for a specific project,but bending steel often results in wrinkles or cracks,It is frustrating when a simple modification ruins high-quality steel,I will show you how to get the perfect angle,To learn how to bend exhaust pipe effectively,you must support the internal structure to prevent collapse,For manual bending
How to Prevent Natural Gas Pipeline Corrosion: Best Practices and Modern Solutions

Natural gas is a highly flammable and explosive energy source,and its safe transportation is a matter of great importance,Among all transportation methods,long-distance pipelines are considered the safest,fastest,and most cost-effective solution,However,during the operation of these pipelines
The Application and Technical Performance of PE Coated Pipe in Building Water Supply Systems

In modern construction and residential water supply systems,PE coated pipe has become one of the most reliable and widely used materials,Known for its corrosion resistance,durability,and flexibility,it provides a practical solution for both hot and cold water pipelines,Below,we explore the operating conditions,installation considerations,and technical performance of PE coated pipes in building applications,

SMLS Line Pipes

Name: SMLS Line Pipes
Brand: Ever Nickel
Price: 99.99 USD
Availability: InStock
Rating: 4.8 (50 reviews)

Product Name: Seamless Steel Pipe, CS SMLS Pipe, Seamless Carbon Steel Pipe, Seamless Pipe,Seamless Carbon Steel Pipe,Carbon Steel Seamless Pipe

Size:

OD: 10.3-1219.2mm

WT: 1.65-60mm

LENGTH: 5.8/6/11.8/12m

Surface: oiled or unoiled

Ends: plain ends, beveled with tube cap

Standard and Grade: API 5L /ASTM A106, Grade B; ASTM A53, Gr.A,Gr.B; DN 17175/EN10216-2, Grade ST35, ST45, ST52, 13CrMo44; DIN 2391/EN10305-1, Grade St35, St45, St52,EN 10210 S235JR,S275JR,S355JR

Package: by bundle or bulk

Application: For converying gas, water & oil for Fluids Transmission

Email To Us

Get A Quote +

Description
Specification
Standard
Process
Packing

High-Performance Seamless (SMLS) Steel Line Pipes

Our seamless steel line pipes are engineered for the reliable transportation of oil, gas, water, and hydrocarbon fluids in the most demanding environments. Manufactured using advanced hot-rolling and cold-drawing techniques, these pipes offer superior structural integrity, uniform wall thickness, and higher pressure ratings compared to welded alternatives.

1. Technical Specifications

Outside Diameter (OD):10.3 mm – 914.4 mm (1/8" to 36")

Wall Thickness (WT):1.73 mm – 100 mm (SCH 10 to SCH XXS)

Length:Single Random (SRL), Double Random (DRL), or Fixed Lengths (up to 12m or 18m).

Manufacturing Process:Hot Finished Seamless (HFS) and Cold Drawn Seamless (CDS).

2. Industry Standards & Material Grades

We provide line pipes that strictly adhere to international quality benchmarks, supplied with fullMTC (Material Test Certificates).

API 5L (PSL1 & PSL2):Grade B, X42, X46, X52, X56, X60, X65, X70, X80.

ASTM A106:Grade B, Grade C (High-Temperature Service).

ASTM A53:Grade B.

DIN/EN Standards:EN 10208-1/2 (L245, L290, L360).

3. Key Applications

Oil & Gas Midstream:Onshore and offshore transmission pipelines for crude oil and natural gas.

Refinery & Petrochemical:High-pressure fluid transport within processing plants.

Infrastructure:High-pressure water mains and geothermal piping systems.

Extreme Environments:Specialized "Sour Service" grades for H2S-containing environments and low-temperature service.

4. Surface Protection & Packaging

To ensure zero-defect delivery and long-term corrosion resistance:

Coating Options:3PE (Three-Layer Polyethylene), FBE (Fusion Bonded Epoxy), Black Vanish, or Galvanized coating.

End Treatment:Beveled ends (30°±5°) for easy welding, or plain ends with plastic caps.

Export Packing:Hexagonal bundles with steel strips, marking/stencil according to project requirements, and sea-worthy packaging for container or bulk shipment.

5. Quality Assurance

Every pipe undergoes rigorous non-destructive testing (NDT), including:

Hydrostatic Testingto verify pressure containment.

Ultrasonic (UT) & Eddy Current Testingfor internal flaw detection.

Chemical & Mechanical Analysisto ensure exact grade compliance.

Seamless Steel Pipe Specifications Up To 36

Outer Diameter (OD)	Wall Thickness (WT) Range	Length Range	Common Schedule / Standards
1/2" (21.3 mm)	2.11 mm – 7.47 mm	5.8m – 12.0m	SCH 40, 80, 160, XXS
1" (33.4 mm)	2.77 mm – 9.09 mm	5.8m – 12.0m	ASTM A106 / API 5L
2" (60.3 mm)	2.77 mm – 11.07 mm	5.8m – 12.0m	SCH 40, 80, 160, XXS
4" (114.3 mm)	3.18 mm – 17.12 mm	5.8m – 12.0m	Standard Line Pipe
6" (168.3 mm)	3.40 mm – 21.95 mm	5.8m – 12.0m	SCH 40, 80, 120, 160
8" (219.1 mm)	3.76 mm – 23.01 mm	5.8m – 12.0m	Oil & Gas Conveyance
10" (273.1 mm)	4.19 mm – 28.58 mm	5.8m – 12.0m	SCH 40, 60, 80, 100
12" (323.9 mm)	4.57 mm – 33.32 mm	5.8m – 12.0m	Power Plant Piping
14" (355.6 mm)	6.35 mm – 35.71 mm	5.8m – 12.0m	ASTM A333 (Low Temp)
16" (406.4 mm)	6.35 mm – 40.49 mm	5.8m – 12.0m	High Temp Service
20" (508.0 mm)	6.35 mm – 50.01 mm	5.8m – 12.0m	Heavy Wall Thickness
24" (609.6 mm)	6.35 mm – 59.54 mm	5.8m – 12.0m	Standard Max Pierced OD
28" (711.2 mm)	7.92 mm – 60.00 mm	5.8m – 12.0m	Hot Expanded SMLS
32" (812.8 mm)	9.53 mm – 60.00 mm	5.8m – 12.0m	Critical Pressure Vessels
36" (914.4 mm)	9.53 mm – 60.00 mm	5.8m – 12.0m	Large Diameter Seamless

Steel Pipe Mechanical and Chemical Properties

	Chemical Components (%)					Mechanical Properties			Impact Test
Standard / Grade	C (%)	Si (%)	Mn (%)	P (%)	S (%)	Tensile (MPa)	Yield (MPa)	Elong. (%)	Impact Temp	Impact Energy (J)
ASTM A106 Gr.B	0.3	0.1	0.29-1.06	0.035	0.035	415	240	30	N/A	N/A
ASTM A106 Gr.C	0.35	0.1	0.29-1.06	0.035	0.035	485	275	30	N/A	N/A
API 5L B (PSL1)	0.28	---	1.2	0.03	0.03	415	245	23	N/A	N/A
API 5L X42 (PSL1)	0.28	---	1.3	0.03	0.03	415	290	23	N/A	N/A
API 5L X46 (PSL1)	0.28	---	1.4	0.03	0.03	435	320	22	N/A	N/A
API 5L X52 (PSL1)	0.28	---	1.4	0.03	0.03	460	360	21	N/A	N/A
API 5L X56 (PSL1)	0.28	---	1.4	0.03	0.03	490	390	19	N/A	N/A
API 5L X60 (PSL1)	0.28	---	1.4	0.03	0.03	520	415	19	N/A	N/A
API 5L X65 (PSL1)	0.28	---	1.45	0.03	0.03	535	450	18	N/A	N/A
API 5L Gr.B (PSL2)	0.24	0.4	1.2	0.025	0.015	415	245-450	23	0 °C	27 J
API 5L X42 (PSL2)	0.24	0.4	1.3	0.025	0.015	415	290-496	23	0 °C	27 J
API 5L X52 (PSL2)	0.24	0.45	1.4	0.025	0.015	460	360-530	21	0 °C	27 J
API 5L X60 (PSL2)	0.24	0.45	1.4	0.025	0.015	520	415-565	19	0 °C	27 J
API 5L X65 (PSL2)	0.24	0.45	1.45	0.025	0.015	535	450-600	18	0 °C	27 J
ASTM A333 Gr.1	0.3	---	0.40-1.06	0.025	0.025	380	205	35	-45 °C	18 J
ASTM A333 Gr.3	0.19	0.18-0.37	0.31-0.64	0.025	0.025	450	240	30	-100 °C	18 J
ASTM A333 Gr.6	0.3	0.10 min	0.29-1.06	0.025	0.025	415	240	30	-45 °C	18 J
EN 10210 S235JR	0.17	---	1.4	0.035	0.035	360-510	235	26	20 °C	27 J
EN 10210 S235J0H	0.17	---	1.4	0.03	0.03	360-510	235	26	0 °C	27 J
EN 10210 S235J2H	0.17	---	1.4	0.025	0.025	360-510	235	26	-20 °C	27 J
EN 10210 S275JR	0.21	---	1.5	0.035	0.035	410-560	275	23	20 °C	27 J
EN 10210 S275J0H	0.21	---	1.5	0.03	0.03	410-560	275	23	0 °C	27 J
EN 10210 S275J2H	0.21	---	1.5	0.025	0.025	410-560	275	23	-20 °C	27 J
EN 10210 S355JR	0.22	0.55	1.6	0.035	0.035	470-630	355	22	20 °C	27 J
EN 10210 S355J0H	0.22	0.55	1.6	0.03	0.03	470-630	355	22	0 °C	27 J
EN 10210 S355J2H	0.22	0.55	1.6	0.025	0.025	470-630	355	22	-20 °C	27 J

SMLS Pipe Standards Technical Data

Standard	Feature	Dimension Range	Tolerance (Permissible Variation)
ASTM A106 / A53	Outside Diameter	1/8" to 1-1/2" (DN6-40)	±0.40 mm
		2" to 4" (DN50-100)	±0.80 mm
		5" to 8" (DN125-200)	+1.60 mm / -0.80 mm
		> 8" (DN200)	+1.6% OD / -0.8% OD
	Wall Thickness	All Sizes	-12.5% (No max limit specified)
	Length	Single Random (SRL)	4.8m – 6.7m (min 90% of load)
API 5L (PSL1/PSL2)	Outside Diameter	< 2-3/8" (60.3mm)	+0.41 mm / -0.80 mm
		2-3/8" to 24"	±0.75% OD
		> 24"	±1.0% OD
	Wall Thickness	≤ 4.0 mm	+0.6 mm / -0.5 mm
	Wall Thickness	4.0 mm to 25.0 mm	+15.0% / -12.5%
	Length	Custom/Standard	± 500 mm (or as per agreement)
EN 10210 / 10216	Outside Diameter	All Sizes	±1% (Min ±0.5 mm)
	Wall Thickness	All Sizes	±12.5% (Min ±0.4 mm)
	Straightness	Total Length	≤ 0.2% of total length