China ship building steel pipe Manufacturer, Supplier, Factory | Yuantai Derun Steel Pipe Manufacturing Group

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ship building steel pipe

Shipbuilding Steel Pipe

Manufacturing of seamless steel pipes for marine boilers, superheaters, and Class I and II pressure piping systems

Shipbuilding steel pipes are one of the key elements used in the manufacturing of ships, so enterprises need to ensure that their quality meets international standards when purchasing.

This includes the physical and chemical properties, dimensional accuracy and applicable classification society certification of steel pipes.

Application of Marine Steel Pipe

Steel pipes for ships, are used in marine boilers and superheaters.

Shipbuilding steel pipe international standard

CCS specification of China Classification Society 360、410、440、490

Det Norske Veritas DNV Specification Carbon and Carbon Manganese Steel, Alloy Steel

Lloyd's Register LR Specification Carbon and Carbon Manganese Steel, Alloy Steel

GL Rules GL-R360, GL-R410, GL-R510

BV Code 410HB, 510HB

Korean Classification Society KR Specification RST138, RST142

American Bureau of Shipping ABS specifications ASTM A53 B/C, ASTM A106 B/C, ASTM A179, ASTM A192

Japan Classification Society NK Specification STPG410, STPG510

Since 2002, Yuantai Derun has obtained product standard certifications from various countries around the world, such as BV, DNV, ABS, etc

Common specifications

57mm, 60, 63.5, 70, 73, 89, 95, 108, 127, 133, 140, 159, 168-426mm, and other different sizes

Delivery time of shipbuilding steel pipe

The delivery time of ship pipes is generally longer than that of ordinary steel pipes. 15-90 days

Does it support customization?

Yes， Yuantai supports customization

Material of Shipbuilding steel pipe

20 45 Q345B、27simn、16mn、20G、15crmo

Production grade of Shipbuilding steel pipe

320, 360, 410, 460, 490, etc

Dimensional tolerances for shipbuilding steel pipes

Steel pipe type	Outer diameter (D)		steel pipe wall thickness (S)
Cold-drawn pipe	Outer diameter of steel pipe (mm)	Allowable deviation (mm)	Steel pipe wall thickness (mm)	Allowable deviation (mm)
	>30～50	±0.3	≤30	±10%
	>50～219	±0.8%
hot-rolled pipe	>219	±1.0%	>20	±10%

Allowable deviation of outer diameter and wall thickness

Outer diameter D	hot-rolled pipe	Outer diameter size mm	≤ 159	＞ 159
		Allowable deviation %	± 1.0	± 1.25
	cold-drawn pipe	Outer diameter size mm	≤ 30	＞ 30~50	＞ 50
		Allowable deviation %	± 0.20mm	± 0.30mm	± 0.8%
Wall thickness S	hot-rolled pipe	Wall thickness dimension mm	3 ＜ S ≤ 20	S ＞ 20
		Allowable deviation %	+15-10	± 10
	cold-drawn pipe	Wall thickness dimension mm	1.5~3	＞ 3
		Allowable deviation %	+12-10	± 10