P235GH Seamless steel pipe





Product Introduction

P235GH is a European specified steel for boilers, pressure vessels and heat exchangers. The composition of EN 10216-2 steel makes it ideal for normal operating temperature rise applications, and the material is used by manufacturers throughout the natural gas, oil and petrochemical industries. P235GH is a normalizing carbon alloy steel. EN specification carbon steel tubes for high temperature service applications. Seamless carbon steel tubes in accordance with EN 10216-2 P235GH grade are reheated and supplied in full annealed, isothermal annealed or normalized and tempered states. EN 10216-2 P235GH grade carbon steel seamless tubes have typical chemical composition with a maximum of 0.30 chromium and a maximum of 0.08 molybdenum added. EN 10216-2 is made of carbon steel and low alloy steel and can withstand loads at very high pressures and temperatures. EN 10216 P235GH Used in the construction of electrical engineering equipment, such as heating coils, boilers, stoves, heaters, heat exchangers.

EN 10216-2 P235GH is a heat resistant pressure vessel steel as defined in EN 10028 systems. They are similar to EN 10216 P265GH, but have a lower carbon content and a higher manganese content. EN 10216 P235GH steel has lower yield strength and tensile strength than EN 10216-2 P265GH steel. The EN 10216 material is also designed for high temperature applications. EN 10216-2 materials have excellent cold and hot working properties. Therefore, it is used in pipes for carrying hot liquids. EN 10216 P235GH is a European specified steel for use in pressure vessels, boilers and heat exchangers. 10216-2 is the EN numerical name for this material. Carbon steel P235GH tube is the EN chemical name. EN 10216 has moderately low thermal conductivity in carbon steel. In addition, EN 10216-2 has moderately high ductility and fairly low tensile strength. The diameter of carbon steel EN 10216 pipe ranges from 21.3mm to 660mm, with a wall thickness of up to 100 mm in the case of hot rolling and 10.2 to 108 in diameter, and up to 12,5 mm in the case of cold drawing. EN10216-2 is manufactured in accordance with PN-EN10216-2 TC1 test (Requirement Level I) and TC2 (Requirement Level III).

EN 10216-2 P235GH Seamless steel tubes

Standard:EN 10216-2

Seamless steel tubes for pressure purposes —Technical delivery conditions

Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties

EN 10216-2 P235GH Seamless steel tubes for pressure purposes

EN 10216-2 P235GH Seamless steel tubes Quick Details

Manufacture:Seamless process

Wall thickness(WT): 2.1mm——20 mm.

Outer diameter (OD): 21 mm——509mm

Length: 6M or specified length as required.

Ends: Plain End, Beveled End, Treaded

Additional Info

Port of Shipment: Tianjin, China

Payment Terms:T / T, LC

Delivery: 7-15 days after payment

Surface: Tubes will be varnished (Outside only) to prevent rust.

Marking: Standard + Steel Grade + Size + Heat No + Lot No

Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required

The steel name of non-alloy steel grades

(1)The capital letter P for pressure purposes;

(2)The symbols GH for elevated temperature.

MANUFACTURING PROCESS

(1)Steel making process

Steels shall be fully killed.

(2)Tube manufacture and delivery conditions

The tubes will be manufactured by a seamless process.

The tubes can be either hot or cold finished.

EN 10216-2 P235GH Seamless steel tubes shall be supplied in the relevant heat treatment conditions as specified in Table 1.

Steel grade		Heat	Austenizing		Tempering
Steel grade		treatment	Austenizing		Tempering
Steel	Steel	a	Temperature °C	Cooling	Temperature °C	Cooling
name	number		Temperature °C	Medium	Temperature °C	medium
P235GH	1.0345	+N b	880 to 940	Air	-	-
a +N = Normalising, +NT = Normalising + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing.
b Normalising includes Normalising Forming.

Chemical composition of EN 10216-2 P235GH

Steel grade

Steel

Al tot

Ti max

Cr+Cu+Mo+Ni

Others

number

max

P235GH

1.0345

≤ 0,16

≤ 0,35

≤ 1,20

0,025

0,020

≤ 0,30

≤ 0,08

≤ 0,30

≥ 0,020

≤ 0,30

≤ 0,010

0,040

≤ 0,02

≤ 0,70

Mechanical properties of EN 10216-2 P235GH

Steel grade		Upper yield strength or proof strength				Tensile	Elongation
		R eH or Rp 0,2 for Wall Thickness T				Strength	A min.
		min.				Rm	% a
Steel name	Steel	T ≤ 16	16 < T ≤ 40	40 < T ≤ 60	60 < T ≤ 100		l	t
Steel name	number	MPa *	MPa *	MPa *	MPa *	MPa *	l	t
P235GH	1.0345	235	225	215	-	360 to 500	25	23

Note:l = longitudinal t = transverse

Dimensions tolerances of EN 10216-2

Tolerances on outside diameter and wall thicknes

Outside Diameter D mm	Tolerances on	Tolerances on T for a T/D ratio
	D
		≤ 0,025	> 0,025	> 0,050	> 0,10
			≤ 0,050	≤ 0,10
D ≤ 219,1	± 1% or ± 0.5mm	± 12,5% or ± 0.4mm whichever is the greater
D > 219,1	whichever is the greater	± 20%	± 15%	± 12,5%	± 10% a
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

Tolerances on inside diameter and wall thickness

Tolerances on inside diameter

Tolerances on T for a T/d ratio

d min

≤ 0,03

> 0,03

> 0,06

> 0,12

≤ 0,06

≤ 0,12

± 1% or ± 2 mm whichever is the greater

(+ 2% ,0)or (+ 4 mm,0)

whichever is the greater

± 20%

± 15%

± 12,5%

± 10% a

a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

Tolerances on outside diameter and minimum wall thickness

Outside diameter D mm	Tolerances on D	Tolerances on T min for a T min /D ratio
		≤ 0,02	> 0,02	> 0,04	> 0,09
			≤ 0,04	≤ 0,09
D ≤ 219,1	± 1% or ± 0.5mm	(+ 28%,0) or (+ 0.8 mm,0) whichever is the greater
D > 219,1	whichever is the greater	50%	35%	28%	+ 22% a
		0	0	0	0
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

Tolerances on inside diameter and minimum wall thickness

Tolerances		Tolerances on T min for a
on inside diameter		T min /d ratio
d	d min	≤ 0,05	> 0,05	> 0,1
			≤ 0,1
± 1% or ± 2 mm	(+2%,0) or (+ 4 mm,0) whichever is the greater	35%	28%	+ 22% a
whichever is the greater		0	0	0
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T

Tolerances on exact lengths

Dimension in mm

Length L	Tolerance on exact length
L ≤ 6000	10
L ≤ 6000	0
6000 < L ≤ 12 000	15
6000 < L ≤ 12 000	0
L > 12 000	+ by agreement
L > 12 000	0

TESTINGS

(1)Chemical analysis

(2)Tensile test(Tensile test at room temperature, Tensile test at elevated temperature)

(3)Flattening test

(4)Ring tensile test

(5)Drift expanding test

(6)Ring expanding test

(7)Impact test

(8)Leak tightness test(Hydrostatic test, Electromagnetic test)

(9)Dimensional inspection

(10) Visual examination

(11) Non-destructive testing

MARKING

Marking to be applied

The marking shall be indelibly marked on each tube at least at one end. For tubes with outside diameter D ≤ 51 mm the marking on tubes may be replaced by the marking on a label attached to the bundle or box.

PROTECTION

The tubes will be delivered with A temporary protective coating or durable coating and/or lining

Ordering Information

Mandatory information

a) the quantity (mass or total length or number);

b) the term "tube";

c) the dimensions ;

d) the designation of the steel grade in accordance with this Part of EN 10216 ;

e) the test category for non-alloy steel .

Options

1) Cold finishing.

2) Restriction on copper and tin content.

3) Product analysis.

4) Impact testing .

5) Longitudinal impact testing at -10° C for non-alloy steel grades.

6) Tensile testing at elevated temperature .

7) Selection of leak-tightness test method .

8) Non-Destructive Testing for test category 2 tubes for detection of transverse imperfections.

9) Non-Destructive Testing for test category 2 tubes for detection of laminar imperfections .

10) Special ends preparation.

11) Set of dimensions other than D and T.

12) Exact lengths ).

13) The type of inspection document other than the standard document.

14) Test pressure for hydrostatic leak-tightness test .

15) Wall thickness measurement away from the ends .

16) Non-Destructive Testing method.

17) Additional marking .

18) Protection .

WORKSHOP EQUIPMENT

PACKAGE DELIVERY 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM

In bundle,plastic bags,thin film,wooden pallet,standard seaworthy export packing or as customer demands

{{title}}