Pipe & Tube for Ship

Seamless steel pipe specifications for ships: outer diameter 8mm-1240mm×wall thickness 1mm-200mm.
Seamless steel pipe specifications for ships: 8-1240×1-200mm
standard:
China Classification Society Materials and Welding Specifications-China Classification Society (CCS)
Det Norske Veritas (DNV) Specifications - Det Norske Veritas (DNV)
Lloyd's Register of Shipping (LR) Specifications - Lloyd's Register of Shipping (LR)
Germanischer Lloyd (GL) specifications - Germanischer Lloyd (GL)
American Bureau of Shipping (ABS) Specifications - American Bureau of Shipping (ABS)
Bureau Veritas (BV) specifications - Bureau Veritas (BV)
Italian Register of Shipping (RINA) specifications - Italian Register of Shipping (RINA)
Japan Shipping Classification Society (NK) specifications - Japan Shipping Classification Society (NK)
GB/T5312--China National Standard

use:
Used for the manufacture of seamless steel pipes for marine boilers and superheaters and grade I and II pressure piping systems.
Mainly produced steel pipe grades: 320, 360, 410, 460, 490, etc.

Dimensional tolerance:

Steel pipe types	Outer diameter (D)	Steel pipe wall thickness (S)	-	-
cold drawn tube	Steel pipe outer diameter (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％

Mechanical properties:

standard	Trademark	Tensile strength (MPa)	Yield strength (MPa)	Elongation(%)
GB/T5312	320	320～410	≥195	≥25
360	360～480	≥215	≥24	-
410	410～530	≥235	≥22	-
460	460～580	≥265	≥21	-
490	490～610	≥285	≥21	-

chemical composition:

standard	Trademark	chemical composition(%)	-	-	-	-
C	Si	Mn	P	S	-	-
GB/T5312	320	≤0.16	≤0.35	0.40～0.70	≤0.035	≤0.035
360	≤0.17	≤0.35	0.40～0.80	≤0.035	≤0.035	-
410	≤0.21	≤0.35	0.40～1.20	≤0.035	≤0.035	-
460	≤0.22	≤0.35	0.80～1.40	≤0.035	≤0.030	-
490	≤0.23	≤0.35	0.80～1.50	≤0.035	≤0.030	-

Note: residual elementsCr≤0.25％,Mo≤0.10％,Ni≤0.30％,Cu≤0.30％total amount≤0.70％

Marine Seamless Steel Pipe

 

GNEE also has jackets, underwater steel piles, casings, mooring brackets, helicopter platforms, flare towers and other steel pipe usage types, material specifications, same diameters, different diameters, different wall thicknesses, as well as a large number of Y, K, T pipes node. Such as jackets, steel piles, wellhead anti-seepage casings, etc., most of which are large-diameter steel pipes, generally made of rolled steel. Its materials are E36-Z35, D36-Z35, E36, and D36. Mainly GB712-2000.

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