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DIN 17175 Seamless Steel Heat Resistant Pipe

OD: 48mm-720mm

WT: 4mm-58mm

Length: 5-12m or as requirement

Application: Hydraulic system pipeline pipe, pipe for boiler project, construction structure, etc.

Supplementary Technology: Plain or threaded with socket or beveled with plastic caps, hydraulic testing, eddy current, Infrared test.

Surface: Varnish/Oil (red & black) painting, Zinc coated (hot dipped galvanized), Anti-corrosion powder coating, 2PP/2PE, 3PP/3PE, FBE.

Delivery state: Hot Rolled, Cold Drawn

Steel Grade: St35.8, St45.8, 15Mo3, 13CrMo44, 10CrMo910

DIN 17175 Steel 45.8 Carbon Boiler Tube DIN 17175 ST45.8 Seamless Carbon Steel Boiler Tube ST45.8 Boiler Tubes

Introduction
Parameters
Service

DIN 17175 Seamless Steel Pipe Supplier

DIN 17175 alloy steel pipes are of heat resistant pipe and used for high pressure and up to 600℃, application fields include: construction of boilers, pipe-lines, pressure vessels and equipment.DIN 17175 Seamless steel boiler tubes is specially used as heating surface tubes in low and medium pressure boilers tubes(The working pressure is not more than 5.88 Mpa and the significant temperature is below 450 degree celsius).

Application

The construction of boilers, pipelines, pressure vessels, and equipment for service up to 600℃ and at simultaneous high pressures, where the total stress and the relevant scaling conditions can raise or lower the temperature limit.

Delivery Conditions

The tubes shall be supplied suitably heat treated over their entire length. The following heat treatment shall be used, depending on the type of steel:

Normalizing
Subcritical annealing
Hardening and tempering with continuous cooling from the hardening temperature and subsequent tempering.
Hardening and tempering with isothermal transformation.

Specification Parameters

Basic Information

Chemical composition of DIN 17175 Seamless Steel Tubes

Standard	grade	Chemical composition
Standard	grade	C	Si	Mn	P、S	Cr	Mo
DIN 17175	St35.8	≤0.17	0.10-0.35	0.40-0.80	≤0.030	/	/
	St45.8	≤0.21	0.10-0.35	0.40-1.20	≤0.030	/	/
	15mo3	0.12-0.20	0.10-0.35	0.40-0.80	≤0.030	/	0.25-0.35
	13CrMo44	0.10-0.18	0.10-0.35	0.40-0.70	≤0.030	0.70-1.10	0.45-0.65
	10CrMo910	0.08-0.15	≤0.50	0.40-0.70	≤0.030	2.00-2.50	0.90-1.20

Dimensions Tolerance

Project	Standard		Size range		Tolerance
Outer diameter	DIN17175		Hot rolled steel pipe	OD ≤ 100mm	± 0.75%( Min ± 0.5mm )
				OD＞ 100~ 320mm	± 0.9%
			Cold drawn steel pipe OD ≤ 120mm		± 0.6%( Min ± 0.25mm )
Wall thickness	DIN17175	OD ≤ 130mm	WT ≤ 2Sn		+15%~-10%
			WT ＞ 2Sn~4Sn		+12.5%~-10%
			WT ＞ 4Sn		± 9%
		130 ＜ OD ≤ 320mm	WT ≤ 0.05OD		+17.5%~-12.5%
			0.05OD ＜ WT ≤ 0.11OD		± 12.5%
			WT ＞ 0.11OD		± 10%

Mechanical properties of DIN 17175 Boiler Tubes

Standard	grade	Tensile Strength(MPa)	Yield Strength(MPa)	Elongation(%)
DIN 17175	St35.8	360-480	≥235	≥25
	St45.8	410-530	≥255	≥21
	15mo3	450-600	≥270	≥20
	13CrMo44	440-590	≥290	≥20
	10CrMo910	450-600	≥280	≥18

Service Support

DIN 17175 Seamless Steel Heat Resistant Pipe

Test

Chemical composition verification test
hydrostatictest
Tensile test
Notched impact test
Yield strength test
Ring test
Nondestructive testing

Package and Shipping

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

Plastic caps plugged at the two sides of pipe ends
Should be avoided by the steel strapping and transport damage
Bundled signs should be uniform and consistent
The same bundle(batch) of steel pipe should be came from the same furnace.
The steel pipe has the same furnace number, the same steel grade, the same specifications.

Our packing can meet any needs of the customers.

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DIN 17175 Seamless Steel Heat Resistant Pipe

DIN 17175 Seamless Steel Pipe Supplier

Application

Delivery Conditions

Chemical composition of DIN 17175 Seamless Steel Tubes

Dimensions Tolerance

Mechanical properties of DIN 17175 Boiler Tubes

Test

Package and Shipping