Line pipe

Process: Hot rolling, normalizing & quenching tempering
Surface: Smooth inner & outer wall, free of cracks, folds and burrs
Material: API 5L B, X42, X52, X60, X65, X70
Specification: OD 21.3–1219mm, wall thickness 2.77–25.4mm, customizable
Application: Oil, natural gas and fluid transmission pipeline

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OD*WT（mm）

21.3*2.77 33.7*3.38 42.4*3.56 60.3*3.91 88.9*4.0 168.3*6.0 168.3*7.11 219.1*6.0 219.1*8.0 323.9*10.0

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Product Detail

Product Overview：

Line Pipe belongs to seamless steel pipe, manufactured to API 5L standard. It is used for transportation of oil, natural gas and other media, applied in onshore and offshore pipeline projects. Grades like B, X42, X52 fit conventional transmission; high-strength X60, X65, X70 suit high-pressure long-distance pipelines. API 5L line pipe covers OD 21.3–1219mm, wall thickness 2.77–25.4mm. Main steel grades: B, X42, X52, X60, X65, X70, available with plain end or bevelled end.

Product List
Product Name:	API 5L Line Pipe Grade B
Product Name:	API 5L Line Pipe X42
Product Name:	API 5L Line Pipe X52
Product Name:	API 5L Line Pipe X60
Product Name:	API 5L Line Pipe X65
Product Name:	API 5L Line Pipe X70
Product Name:	GB/T9711 Line Pipe

Parameter range
Outer diameter	Φ21.3mm–Φ1219mm (0.84'–48')
Wall thickness	2.77mm–25.4mm
Standard length	R1 6–8m, R2 8–12m, R3 12–18m; support customization of short and long scales
Outer diameter accuracy	Per API 5L, tolerance ±0.75% of OD
Executive Standards	API 5L, ISO 3183, GB/T 9711, SY/T 5037
Non-standard customization	Customization of special end types, anti-corrosion coating, heat treatment, and pipe ends (plain end / bevelled end) can all be customized

Common specifications
Outer diameter (mm)	21.3	33.7	42.4	60.3	88.9	114.3
Wall Thickness (mm)	2.77	3.38	3.56	3.91	4.0	4.0/6.0
Commonly used steel grades	Grade B, L245	Grade B, L245, L290	L245, L290, L360	L245, L290, L360	L290, L360, L415	L360, L415, L450

Outer diameter (mm)	168.3	219.1	273.1	323.9	406.4	508.0
Wall Thickness (mm)	6.0/7.11	6.0/7.11/8.0	7.11/8.0	8.0/10.0	8.0/10.0	10.0/12.7
Commonly used steel grades	L360, L415, L450	L360, L415, L485	L415, L450, L485	L415, L450, L485	L450, L485	L450, L485

Optional tolerance range
Tolerance control	Optional manufacturing process
OD tolerance ≤ ±0.75% OD	Hot rolling / ERW / SAWL
OD tolerance ≤ ±1.0% OD	Hot rolling / ERW / SAWL
Wall thickness tolerance -5% ~ +12.5%	Hot rolling / ERW / SAWL
Length tolerance ≤ ±150mm	Hot rolling / ERW / SAWL
Cut-to-length tolerance ±5mm (fixed length)	Hot rolling / ERW / SAWL
Bevel end tolerance	Hot rolling + CNC pipe end machining

Oil Casing Tolerance Range
Outer Diameter	≤114.3mm ±0.75%; ＞114.3mm +1.0% / -0.5%
Wall Thickness	-5% ~ +12.5%
Length	Max +1.0m, no short length; fixed length ±5mm available
Straightness	≤0.2% of total length
End Squareness	≤0.5°

Optional delivery status
Threading & coupling	Heat treatment	Anti-corrosion coating
Cut-to-length	Pipe end bevelling	Thread protector
Straightenin	Bundling	Non-destructive testing

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Product Detail

Product Overview：

Product List
Product Name:	API 5L Line Pipe Grade B
Product Name:	API 5L Line Pipe X42
Product Name:	API 5L Line Pipe X52
Product Name:	API 5L Line Pipe X60
Product Name:	API 5L Line Pipe X65
Product Name:	API 5L Line Pipe X70
Product Name:	GB/T9711 Line Pipe

Parameter range
Outer diameter	Φ21.3mm–Φ1219mm (0.84'–48')
Wall thickness	2.77mm–25.4mm
Standard length	R1 6–8m, R2 8–12m, R3 12–18m; support customization of short and long scales
Outer diameter accuracy	Per API 5L, tolerance ±0.75% of OD
Executive Standards	API 5L, ISO 3183, GB/T 9711, SY/T 5037
Non-standard customization	Customization of special end types, anti-corrosion coating, heat treatment, and pipe ends (plain end / bevelled end) can all be customized

Common specifications
Outer diameter (mm)	21.3	33.7	42.4	60.3	88.9	114.3
Wall Thickness (mm)	2.77	3.38	3.56	3.91	4.0	4.0/6.0
Commonly used steel grades	Grade B, L245	Grade B, L245, L290	L245, L290, L360	L245, L290, L360	L290, L360, L415	L360, L415, L450

Outer diameter (mm)	168.3	219.1	273.1	323.9	406.4	508.0
Wall Thickness (mm)	6.0/7.11	6.0/7.11/8.0	7.11/8.0	8.0/10.0	8.0/10.0	10.0/12.7
Commonly used steel grades	L360, L415, L450	L360, L415, L485	L415, L450, L485	L415, L450, L485	L450, L485	L450, L485

Optional tolerance range
Tolerance control	Optional manufacturing process
OD tolerance ≤ ±0.75% OD	Hot rolling / ERW / SAWL
OD tolerance ≤ ±1.0% OD	Hot rolling / ERW / SAWL
Wall thickness tolerance -5% ~ +12.5%	Hot rolling / ERW / SAWL
Length tolerance ≤ ±150mm	Hot rolling / ERW / SAWL
Cut-to-length tolerance ±5mm (fixed length)	Hot rolling / ERW / SAWL
Bevel end tolerance	Hot rolling + CNC pipe end machining

Oil Casing Tolerance Range
Outer Diameter	≤114.3mm ±0.75%; ＞114.3mm +1.0% / -0.5%
Wall Thickness	-5% ~ +12.5%
Length	Max +1.0m, no short length; fixed length ±5mm available
Straightness	≤0.2% of total length
End Squareness	≤0.5°

Optional delivery status
Threading & coupling	Heat treatment	Anti-corrosion coating
Cut-to-length	Pipe end bevelling	Thread protector
Straightenin	Bundling	Non-destructive testing