Marine Carbon and Carbon-Manganese Steel Pipes and Tubes

Marine Carbon and Carbon-Manganese Steel Pipes and Tubes

The marine carbon and carbon-manganese steel pipes and tubes are sort of shipbuilding steel pipes made of carbon and carbon-manganese steel. The pipes are applied to marine boilers and marine pressure systems. The manufacturing methods for the pipes are: WHR(WHEX), WHE, WCD(WCR). The process is seamless. We provide a full selection of pipe specifications, available for heavy wall, thin wall, large diameter, small diameter. The pipe ends is plain. If you have any specific requirements, full customization is available.

In addition to the marine carbon and carbon-manganese steel pipes and tubes, we also provide:

• Marine Stainless Steel Tubes

• Marine Seamless Steel Pipes

• Marine API Line Pipes

• Marine Seawater Corrosion Resistant Steel Pipes

• Marine Hydraulic Steel Pipes

• Marine Pressure Steel Pipes

• Marine Boiler Steel Pipes...

• Please contact us for a complete product catalog.

Steel Grades and Chemical Composition

Steel Grade	Chemical Composition %
	C	Si	Mn	S	P	Residual Elements
						Cr	Mo	Ni	Cu	gross
320	≤0.16	-	0.40~0.70	≤0.020	≤0.025	≤0.25	≤0.10	≤0.30	≤0.30	≤0.70
360	≤0.17	≤0.35	0.40~0.80
410	≤0.21	≤0.35	0.40~1.20
460	≤0.22	≤0.35	0.80~1.20
490	≤0.23	≤0.35	0.80~1.50

Mechanical Properties

Steel Grade	Tensile Strength Rm MPa	Lower Yield Strength ReL MPa	Elongation after Fracture A %
320	320~440	≥195	≥25
360	360~480	≥215	≥24
410	410~530	≥235	≥22
460	460~580	≥265	≥21
490	490~610	≥285	≥21

Allowable Deviation for Outer Diameter and Wall Thickness

Manufacturing Methods	Pipe Sizes		Allowable Deviation
WHR(WHEX)	Outer Diameter (D)	all sizes	±1%D or ±0.50 (to select larger value)
	Wall Thickness (S)	≤20	+15%S, -10%S or +0.45, -0.30 (to select larger value)
	Wall Thickness (S)	>20	+10%S
WHE	Outer Diameter (D)	all sizes	±1%D
WHE	Wall Thickness (S)	all sizes	±15%S
WCD (WCR)	Outer Diameter (D)	≤30	±0.20
		30	±0.30
		>50	±0.8%D
	Wall Thickness (S)	1.5≤S≤3	+12.5%S, -10%S
	Wall Thickness (S)	>3	±10%S

Marine Carbon and Carbon-Manganese Steel Pipes and Tubes

Marine Carbon and Carbon-Manganese Steel Pipes and Tubes